US20110138704A1 - Tower with tensioning cables - Google Patents
Tower with tensioning cables Download PDFInfo
- Publication number
- US20110138704A1 US20110138704A1 US12/826,988 US82698810A US2011138704A1 US 20110138704 A1 US20110138704 A1 US 20110138704A1 US 82698810 A US82698810 A US 82698810A US 2011138704 A1 US2011138704 A1 US 2011138704A1
- Authority
- US
- United States
- Prior art keywords
- tower
- concrete
- tensioning cables
- section
- wind turbine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/16—Prestressed structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
Definitions
- This invention relates generally to towers.
- the present invention relates to wind turbine towers having tensioning cables.
- a wind turbine includes a rotor having multiple blades.
- the rotor is mounted to a housing or nacelle, which is positioned on top of a truss or tubular tower.
- Utility grade wind turbines i.e., wind turbines designed to provide electrical power to a utility grid
- the gearbox steps up the inherently low rotational speed of the turbine rotor for the generator to efficiently convert mechanical energy to electrical energy, which is fed into a utility grid.
- the tower is made of steel and must be connected to a foundation made of reinforced concrete.
- the typical technical solution is to provide a large, solid reinforced concrete foundation at the bottom of the tower.
- the tower foundation extends about 12 meters below the ground level, and can be about 18 meters or more in diameter.
- a tower includes at least one concrete tower section having a plurality of tensioning cables.
- the tensioning cables are configured to induce a compressive force on the concrete tower section.
- the tensioning cables are spaced from an exterior surface of the concrete tower section by a substantially uniform distance.
- a wind turbine tower includes at least one concrete tower section having a plurality of tensioning cables.
- the tensioning cables are configured to induce a compressive force on the concrete tower section.
- the tensioning cables are spaced from an exterior surface of the concrete tower section by a substantially uniform distance.
- FIG. 1 illustrates a wind turbine to which the aspects of the present invention can be applied
- FIG. 2 illustrates a side view of a wind turbine and wind turbine tower, according to an aspect of the present invention
- FIG. 3 illustrates a side view of a concrete tower section, according to an aspect of the present invention
- FIG. 4 illustrates a cut-away, perspective view of a portion of a wind turbine tower, according to an aspect of the present invention
- FIG. 5 illustrates a side view of a wind turbine tower, according to an aspect of the present invention
- FIG. 6 illustrates a side view of a concrete tower section incorporating grooves in the outer wall thereof, according to an aspect of the present invention
- FIG. 7 illustrates a top view of a concrete tower section, according to an aspect of the present invention.
- FIG. 8 illustrates a top view of a concrete tower section having a cover, according to an aspect of the present invention
- FIG. 9 illustrates a partial perspective view of a portion of a concrete tower section with the cover as shown in FIG. 8 , according to an aspect of the present invention
- FIG. 1 shows a wind turbine to which the aspects of the present invention can be advantageously applied.
- the present invention is not limited or restricted to wind turbines but can also be applied to tower structures used in other technical fields.
- the various aspects of the present invention may also be applied to antenna towers used in broadcasting or mobile telecommunication or to pylons used in bridge work. Therefore, although the aspects of the invention will be exemplified with reference to a wind turbine, the scope of the present invention shall not be limited thereto.
- the wind turbine 100 shown in FIG. 1 comprises a tower 110 bearing a nacelle 120 on its top end.
- a rotor including a rotor hub 130 and rotor blades 140 is attached to one side of the nacelle 120 .
- the tower 110 is mounted on a foundation 150 .
- the tower may be formed of rolled steel and have multiple stacked sections 112 (e.g., about three or four main sections).
- the tower 120 may be formed of a truss-like structure and/or may have a cylindrical or tapered profile.
- the tower foundation 150 is made of a solid mass of reinforced concrete.
- An aspect of the present invention provides a tower or tower section fabricated from concrete.
- a concrete base section can be used to elevate a conventional rolled-steel tower, or the entire tower can be formed of concrete.
- Concrete is defined as a mixture of aggregates and binder or any suitable masonry support.
- the aggregates may be sand and gravel or crushed stone, and the binder may be water and cement.
- Compressive stresses can be induced in prestressed concrete either by pretensioning or post-tensioning the steel reinforcement.
- pretensioning the steel is stretched before the concrete is placed.
- High-strength steel tendons or cables are placed between two abutments and stretched to a portion of their ultimate strength. Concrete is poured into molds around the tendons/cables and allowed to cure. Once the concrete reaches the required strength, the stretching forces are released. As the steel reacts to regain its original length, the tensile stresses are translated into a compressive stress in the concrete.
- post-tensioning the steel or cable is stretched after the concrete hardens. Concrete is cast in the desired shape first. Once the concrete has hardened to the required strength, the steel tendons or cables are attached and stretched against the ends of the unit and anchored off externally, placing the concrete into compression. According to an aspect of the present invention, post-tensioned concrete is used for wind turbine towers or wind turbine tower sections.
- FIG. 2 illustrates a wind turbine tower, in a partially exploded view, according to an aspect of the present invention.
- the wind turbine 200 includes a tower 210 which may include one or more sections 112 .
- the tower sections 112 may be formed of rolled steel.
- a concrete tower section 215 is located at the bottom of the tower and supports the upper sections 112 .
- the concrete tower section 215 includes concrete walls 260 which may be formed in one or more sections and have a tapered (as shown) or cylindrical shape. Alternatively, the tower sections 210 and/or 215 can have any desired cross-section, such as but not limited to, oval, rectangular, polygonal, etc.
- One or more anchor plates 270 are secured to the top of the concrete walls 260 .
- the anchor plates 270 can extend radially outward past the upper outer edge of walls 260 .
- a plurality of tensioning cables 280 are secured at one end to the anchor plates 270 , and at the other end to foundation 250 .
- the tensioning cables 280 are located circumferentially around and external to the concrete walls 260 , and are positioned close to and at a substantially uniform distance from an outer or exterior surface of concrete walls 260 .
- the term “substantially uniform” can be defined as having approximately the same, or having a slightly varying distance (e.g., a slight taper).
- the tensioning cables 280 can be parallel to or nearly parallel to the outer surface of concrete walls 260 .
- the tensioning cables 280 may be spaced from an exterior surface of a top portion of concrete wall 260 by about two inches, whereas the cables 280 may be spaced from an exterior surface of a bottom portion of concrete wall 260 by about six inches.
- the cables 280 can be of the post-tensioned type, and they apply a compressive force to concrete walls 260 .
- the use of external cables results in a larger moment arm and lower cable forces, and eventually, smaller cables would be required when compared to using the cables internal to the concrete segments.
- the tensioning cables 280 are positioned close to an exterior surface of concrete walls 260 , but may be configured to have a slightly increasing or slightly decreasing distance from the exterior surface of concrete walls 260 .
- wind turbine 200 During operation of the wind turbine 200 , wind flows in the direction indicated by arrow 202 .
- the force of the wind creates a load on the wind turbine and tower.
- the up-wind side of the tower i.e., the left side of the tower as shown in FIG. 2
- the down-wind side of the tower i.e., the right side of the tower as shown in FIG. 2
- the tensioning cables 280 help to counteract the wind caused forces of tension on the tower section 215 .
- One advantage provided by the present invention is the reduction of the effective moment-arm on tower section 215 .
- the tower 210 , 215 reduces its effective moment-arm to provide resistance to wind loads.
- This invention moves the cables outside, but in close proximity to the tower walls. For example, a very small diameter tower having internal cables would need thicker walls and thicker cables to counteract the forces applied by the wind, when compared to a larger diameter tower having external cables.
- the larger diameter tower could be made with thinner concrete walls and have smaller diameter cables when compared to the very small diameter tower.
- FIG. 3 illustrates a side view of concrete tower section 215 .
- Tensioning cables 280 are affixed at one end to anchor plate(s) 270 , and at the other end to foundation 250 .
- the anchor plate 270 is attached (e.g., by bolts or fasteners) to the top of the concrete tower 260 , and a portion of the anchor plate 270 protrudes outboard beyond the outer diameter of the top of concrete tower 260 .
- the tensioning cables 280 are attached to the anchor plate 270 at the overhanging portion of the anchor plate.
- the anchor plate 270 can be made in multiple segments (e.g., three or four sections) that substantially cover the top of concrete walls 260 .
- the anchor plate 270 may also have holes (not shown) through which the flange attachment bolts are embedded into the concrete wall 260 . These can be used to attach the upper potion of the concrete wall 260 to conventional steel tube tower sections 112 . At the bottom end, the cables are secured/attached into the foundation.
- FIG. 4 illustrates a partial perspective view of a portion of a wind turbine tower according to an aspect of the present invention.
- An optional adapter section 405 may be used between a concrete tower section 260 and an upper tower section 112 .
- the adapter section could be formed of concrete and/or steel, and the upper tower section 112 may be formed of rolled steel.
- the anchor plate 270 acts as an attachment point for tensioning cables 280 and the flange 113 of upper tower section 112 .
- the flange can be attached to the anchor plate 270 with any suitable fastening arrangement (e.g., a nut, washer and bolt system).
- the tensioning cables 280 may also be attached to the anchor plate in a similar fashion and may have threaded ends designed to accept a washer and nut.
- FIG. 5 illustrates a side view of a wind turbine tower 500 having multiple concrete tower sections 260 , 361 , 362 .
- the second concrete tower section 361 is attached via anchor plate 270 or via a flange (not shown) to bottom section 260 .
- Tensioning cables 381 are placed circumferentially around the exterior surface of concrete tower section 361 , and are attached to anchor plates 270 and 371 .
- the third concrete tower section 362 is attached via anchor plate 371 or via a flange (not shown) to second concrete tower section 361 .
- Tensioning cables 382 are placed circumferentially around the exterior surface of concrete tower section 362 , and are attached to anchor plate 371 and anchor plate 372 .
- the individual tensioning cables 280 , 381 , 382 may be replaced by ling individual cables running from the foundation 250 to the top anchor plate 372 .
- upper concrete tower sections 361 and 362 could be replaced with one or more steel tower sections. The upper steel tower sections would not require the tensioning cables 381 and 382 .
- FIG. 6 illustrates a side view of a concrete tower section 615 having external grooves 690 in which the tensioning cables 680 can reside.
- This configuration helps to center the cable loads in the body of the concrete wall 660 , thus ensuring a more uniform compressive load in the concrete wall 660 .
- This configuration may also reduce the occurrence of tensile loads in the concrete wall 660 .
- FIG. 7 illustrates a view from the top down of concrete tower section 615 .
- the concrete wall 660 and the grooves 690 formed therein are shown in phantom.
- the anchor plate 670 can be configured to overhang the outer portions of concrete wall 660 or the anchor plate 670 may have its outer diameter aligned (as shown) or approximately flush with the outer diameter of wall 660 .
- the anchor plate 670 can be attached to concrete wall 660 via bolts 672 or any other suitable fastener or fastener arrangement.
- FIG. 8 illustrates a top down view of another aspect of the present invention.
- a removable, non-structural or semi-structural cover 810 can be incorporated on the outside of the concrete tower section 615 , covering both the tensioning cables 680 and the concrete wall 660 .
- the cover 810 can be made of plastic, composite, sheet metal or any other suitable fabric or material.
- the cover 810 may be comprised of one or more sections, and may have one or more seams. The seams could be arranged vertically, horizontally and/or any direction therebetween.
- the cover 810 can also provide protection (e.g., from the weather, vandalism, etc.) for the tensioning cables 680 and or the concrete wall 660 .
- FIG. 9 illustrates a partial perspective view of the concrete tower section 615 during installation of cover 810 .
- the grooves 690 in concrete wall 660 provide several advantages, a few of which are, (1) protecting the external tensioning cables 680 (even more so with cover 810 ), (2) keeps the cables 680 away from view (i.e., reduces visual impact), (3) allows for easy maintenance of the cables 680 by facilitating external access, and (4) centers the compressive load on the concrete (due to the post-tensioned cables 680 ) in the body of the concrete wall 660 .
Abstract
A tower, which may be used for a wind turbine, is provided. The tower includes at least one concrete tower section having a plurality of tensioning cables. The tensioning cables are configured to induce a compressive force on the concrete tower section. The tensioning cables are spaced from an exterior surface of the concrete tower section by a substantially uniform distance.
Description
- This invention relates generally to towers. In particular, but not limited thereto, the present invention relates to wind turbine towers having tensioning cables.
- Recently, wind turbines have received increased attention as environmentally safe and relatively inexpensive alternative energy sources. With this growing interest, considerable efforts have been made to develop wind turbines that are reliable and efficient.
- Generally, a wind turbine includes a rotor having multiple blades. The rotor is mounted to a housing or nacelle, which is positioned on top of a truss or tubular tower. Utility grade wind turbines (i.e., wind turbines designed to provide electrical power to a utility grid) can have large rotors (e.g., 30 or more meters in diameter). Blades on these rotors transform wind energy into a rotational torque or force that drives one or more generators that may be rotationally coupled to the rotor through a gearbox. The gearbox steps up the inherently low rotational speed of the turbine rotor for the generator to efficiently convert mechanical energy to electrical energy, which is fed into a utility grid.
- Several technical installations require a tower or a mast to which the installation is mounted. Non-limiting examples of such installations are wind turbines, antenna towers used in broadcasting or mobile telecommunication, pylons used in bridge work, or power poles. Typically, the tower is made of steel and must be connected to a foundation made of reinforced concrete. In these cases, the typical technical solution is to provide a large, solid reinforced concrete foundation at the bottom of the tower. In typical applications the tower foundation extends about 12 meters below the ground level, and can be about 18 meters or more in diameter.
- In larger utility grade wind turbines (e.g., 2.5 MW or more) it is often desired to have towers with heights of 80 meters or more. The higher hub heights provided by larger towers enable the wind turbine's rotor to exist in higher mean wind speed areas, and this results in increased energy production. Increases in tower height invariably have lead to corresponding increases in the mass, length and diameter of the tower. However, it becomes difficult to construct and transport large wind turbine towers as the local transportation infrastructure (e.g., roads, bridges, vehicles, etc.) often impose limits on the length, weight and diameter of tower components.
- According to one aspect of the present invention, a tower is provided. The tower includes at least one concrete tower section having a plurality of tensioning cables. The tensioning cables are configured to induce a compressive force on the concrete tower section. The tensioning cables are spaced from an exterior surface of the concrete tower section by a substantially uniform distance.
- According to another aspect of the present invention, a wind turbine tower is provided. The tower includes at least one concrete tower section having a plurality of tensioning cables. The tensioning cables are configured to induce a compressive force on the concrete tower section. The tensioning cables are spaced from an exterior surface of the concrete tower section by a substantially uniform distance.
-
FIG. 1 illustrates a wind turbine to which the aspects of the present invention can be applied; -
FIG. 2 illustrates a side view of a wind turbine and wind turbine tower, according to an aspect of the present invention; -
FIG. 3 illustrates a side view of a concrete tower section, according to an aspect of the present invention; -
FIG. 4 illustrates a cut-away, perspective view of a portion of a wind turbine tower, according to an aspect of the present invention; -
FIG. 5 illustrates a side view of a wind turbine tower, according to an aspect of the present invention; -
FIG. 6 illustrates a side view of a concrete tower section incorporating grooves in the outer wall thereof, according to an aspect of the present invention; -
FIG. 7 illustrates a top view of a concrete tower section, according to an aspect of the present invention; -
FIG. 8 illustrates a top view of a concrete tower section having a cover, according to an aspect of the present invention; -
FIG. 9 illustrates a partial perspective view of a portion of a concrete tower section with the cover as shown inFIG. 8 , according to an aspect of the present invention - Reference will now be made in detail to the various aspects of the invention, one or more examples of which are illustrated in the figures. Each example is provided by way of explanation of the invention, and is not meant as a limitation of the invention. For example, features illustrated or described as part of one aspect can be used on or in conjunction with other aspects to yield yet a further aspect. It is intended that the present invention includes such modifications and variations.
-
FIG. 1 shows a wind turbine to which the aspects of the present invention can be advantageously applied. However, it should be understood that the present invention is not limited or restricted to wind turbines but can also be applied to tower structures used in other technical fields. In particular, the various aspects of the present invention may also be applied to antenna towers used in broadcasting or mobile telecommunication or to pylons used in bridge work. Therefore, although the aspects of the invention will be exemplified with reference to a wind turbine, the scope of the present invention shall not be limited thereto. - The
wind turbine 100 shown inFIG. 1 comprises atower 110 bearing anacelle 120 on its top end. A rotor including arotor hub 130 androtor blades 140 is attached to one side of thenacelle 120. Thetower 110 is mounted on afoundation 150. The tower may be formed of rolled steel and have multiple stacked sections 112 (e.g., about three or four main sections). Alternatively, thetower 120 may be formed of a truss-like structure and/or may have a cylindrical or tapered profile. Typically, thetower foundation 150 is made of a solid mass of reinforced concrete. - It would be advantageous to increase tower height in order to capture more energy due to higher mean wind speeds. An aspect of the present invention provides a tower or tower section fabricated from concrete. A concrete base section can be used to elevate a conventional rolled-steel tower, or the entire tower can be formed of concrete. Concrete is defined as a mixture of aggregates and binder or any suitable masonry support. As one non-limiting example only, the aggregates may be sand and gravel or crushed stone, and the binder may be water and cement.
- While concrete is strong in compression, it is weak in tension. Steel is strong under forces of tension, so combining the two elements results in the creation of very strong concrete components. In conventional reinforced concrete, the high tensile strength of steel is combined with concrete's great compressive strength to form a structural material that is strong in both compression and tension. The principle behind prestressed concrete is that compressive stresses induced by high-strength steel tendons in a concrete member before loads are applied will balance the tensile stresses imposed in the member during service.
- Compressive stresses can be induced in prestressed concrete either by pretensioning or post-tensioning the steel reinforcement. In pretensioning, the steel is stretched before the concrete is placed. High-strength steel tendons or cables are placed between two abutments and stretched to a portion of their ultimate strength. Concrete is poured into molds around the tendons/cables and allowed to cure. Once the concrete reaches the required strength, the stretching forces are released. As the steel reacts to regain its original length, the tensile stresses are translated into a compressive stress in the concrete.
- In post-tensioning, the steel or cable is stretched after the concrete hardens. Concrete is cast in the desired shape first. Once the concrete has hardened to the required strength, the steel tendons or cables are attached and stretched against the ends of the unit and anchored off externally, placing the concrete into compression. According to an aspect of the present invention, post-tensioned concrete is used for wind turbine towers or wind turbine tower sections.
-
FIG. 2 illustrates a wind turbine tower, in a partially exploded view, according to an aspect of the present invention. Thewind turbine 200 includes atower 210 which may include one ormore sections 112. Thetower sections 112 may be formed of rolled steel. Aconcrete tower section 215 is located at the bottom of the tower and supports theupper sections 112. Theconcrete tower section 215 includesconcrete walls 260 which may be formed in one or more sections and have a tapered (as shown) or cylindrical shape. Alternatively, thetower sections 210 and/or 215 can have any desired cross-section, such as but not limited to, oval, rectangular, polygonal, etc. One ormore anchor plates 270 are secured to the top of theconcrete walls 260. Theanchor plates 270 can extend radially outward past the upper outer edge ofwalls 260. A plurality oftensioning cables 280 are secured at one end to theanchor plates 270, and at the other end tofoundation 250. - The
tensioning cables 280 are located circumferentially around and external to theconcrete walls 260, and are positioned close to and at a substantially uniform distance from an outer or exterior surface ofconcrete walls 260. The term “substantially uniform” can be defined as having approximately the same, or having a slightly varying distance (e.g., a slight taper). In other words, thetensioning cables 280 can be parallel to or nearly parallel to the outer surface ofconcrete walls 260. As one non-limiting example only, thetensioning cables 280 may be spaced from an exterior surface of a top portion ofconcrete wall 260 by about two inches, whereas thecables 280 may be spaced from an exterior surface of a bottom portion ofconcrete wall 260 by about six inches. Thecables 280 can be of the post-tensioned type, and they apply a compressive force toconcrete walls 260. The use of external cables results in a larger moment arm and lower cable forces, and eventually, smaller cables would be required when compared to using the cables internal to the concrete segments. In other aspects of the invention, thetensioning cables 280 are positioned close to an exterior surface ofconcrete walls 260, but may be configured to have a slightly increasing or slightly decreasing distance from the exterior surface ofconcrete walls 260. - During operation of the
wind turbine 200, wind flows in the direction indicated byarrow 202. The force of the wind creates a load on the wind turbine and tower. The up-wind side of the tower (i.e., the left side of the tower as shown inFIG. 2 ) would be under tension, while the down-wind side of the tower (i.e., the right side of the tower as shown inFIG. 2 ) would be under compression. As discussed previously, concrete performs very well under compression. However, concrete does not perform as well under tension. Thetensioning cables 280 help to counteract the wind caused forces of tension on thetower section 215. - One advantage provided by the present invention is the reduction of the effective moment-arm on
tower section 215. By positioning thetensioning cables 280 close to and external to the exterior surface ofconcrete walls 280 thetower -
FIG. 3 illustrates a side view ofconcrete tower section 215.Tensioning cables 280 are affixed at one end to anchor plate(s) 270, and at the other end tofoundation 250. Theanchor plate 270 is attached (e.g., by bolts or fasteners) to the top of theconcrete tower 260, and a portion of theanchor plate 270 protrudes outboard beyond the outer diameter of the top ofconcrete tower 260. Thetensioning cables 280 are attached to theanchor plate 270 at the overhanging portion of the anchor plate. Theanchor plate 270 can be made in multiple segments (e.g., three or four sections) that substantially cover the top ofconcrete walls 260. Theanchor plate 270 may also have holes (not shown) through which the flange attachment bolts are embedded into theconcrete wall 260. These can be used to attach the upper potion of theconcrete wall 260 to conventional steeltube tower sections 112. At the bottom end, the cables are secured/attached into the foundation. -
FIG. 4 illustrates a partial perspective view of a portion of a wind turbine tower according to an aspect of the present invention. Anoptional adapter section 405 may be used between aconcrete tower section 260 and anupper tower section 112. In one example, the adapter section could be formed of concrete and/or steel, and theupper tower section 112 may be formed of rolled steel. Theanchor plate 270 acts as an attachment point for tensioningcables 280 and theflange 113 ofupper tower section 112. The flange can be attached to theanchor plate 270 with any suitable fastening arrangement (e.g., a nut, washer and bolt system). Thetensioning cables 280 may also be attached to the anchor plate in a similar fashion and may have threaded ends designed to accept a washer and nut. -
FIG. 5 illustrates a side view of awind turbine tower 500 having multipleconcrete tower sections concrete tower section 361 is attached viaanchor plate 270 or via a flange (not shown) tobottom section 260.Tensioning cables 381 are placed circumferentially around the exterior surface ofconcrete tower section 361, and are attached to anchorplates concrete tower section 362 is attached viaanchor plate 371 or via a flange (not shown) to secondconcrete tower section 361.Tensioning cables 382 are placed circumferentially around the exterior surface ofconcrete tower section 362, and are attached to anchorplate 371 andanchor plate 372. Alternatively, theindividual tensioning cables foundation 250 to thetop anchor plate 372. As discussed previously, upperconcrete tower sections tensioning cables - In another aspect of the present invention,
FIG. 6 illustrates a side view of aconcrete tower section 615 havingexternal grooves 690 in which thetensioning cables 680 can reside. This configuration helps to center the cable loads in the body of theconcrete wall 660, thus ensuring a more uniform compressive load in theconcrete wall 660. This configuration may also reduce the occurrence of tensile loads in theconcrete wall 660. -
FIG. 7 illustrates a view from the top down ofconcrete tower section 615. Theconcrete wall 660 and thegrooves 690 formed therein are shown in phantom. Theanchor plate 670 can be configured to overhang the outer portions ofconcrete wall 660 or theanchor plate 670 may have its outer diameter aligned (as shown) or approximately flush with the outer diameter ofwall 660. Theanchor plate 670 can be attached toconcrete wall 660 viabolts 672 or any other suitable fastener or fastener arrangement. -
FIG. 8 illustrates a top down view of another aspect of the present invention. A removable, non-structural orsemi-structural cover 810 can be incorporated on the outside of theconcrete tower section 615, covering both thetensioning cables 680 and theconcrete wall 660. Thecover 810 can be made of plastic, composite, sheet metal or any other suitable fabric or material. Thecover 810 may be comprised of one or more sections, and may have one or more seams. The seams could be arranged vertically, horizontally and/or any direction therebetween. Thecover 810 can also provide protection (e.g., from the weather, vandalism, etc.) for thetensioning cables 680 and or theconcrete wall 660.FIG. 9 illustrates a partial perspective view of theconcrete tower section 615 during installation ofcover 810. - The
grooves 690 inconcrete wall 660 provide several advantages, a few of which are, (1) protecting the external tensioning cables 680 (even more so with cover 810), (2) keeps thecables 680 away from view (i.e., reduces visual impact), (3) allows for easy maintenance of thecables 680 by facilitating external access, and (4) centers the compressive load on the concrete (due to the post-tensioned cables 680) in the body of theconcrete wall 660. - While the invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.
Claims (20)
1. A tower comprising:
at least one concrete tower section having a plurality of tensioning cables, the plurality of tensioning cables configured to induce a compressive force on the at least one concrete tower section;
wherein each of the plurality of tensioning cables are spaced from an exterior surface of the at least one concrete tower section by a substantially uniform distance.
2. The tower of claim 1 , further comprising:
at least one anchor plate attached to a top portion of the at least one concrete tower section;
wherein each of the plurality of tensioning cables are attached to the at least one anchor plate.
3. The tower of claim 2 , wherein each of the plurality of tensioning cables are attached to a foundation of the tower.
4. The tower of claim 1 , further comprising:
one or more upper tower sections;
an adapter section located between the at least one concrete tower section and the one or more upper tower sections;
at least one anchor plate attached to at least one of the one or more upper tower sections;
wherein each of the plurality of tensioning cables are attached to the at least one anchor plate.
5. The tower of claim 4 , wherein each of the plurality of tensioning cables are attached to a foundation of the tower.
6. The tower of claim 1 , further comprising:
at least one upper tower section attached to the at least one concrete tower section.
7. The tower of claim 6 , wherein the at least one upper tower section is comprised of rolled steel.
8. The tower of claim 1 , the at least one concrete tower section further comprising:
a plurality of grooves disposed in an exterior surface of the at least one concrete tower section;
wherein each of the plurality of tensioning cables are contained substantially within each of the plurality of grooves.
9. The tower of claim 8 , further comprising:
at least one cover configured to be attached to the tower;
wherein the plurality of tensioning cables within the plurality of grooves are substantially covered by the at least one cover.
10. The tower of claim 1 , wherein each of the plurality of tensioning cables are configured to be closer to a top exterior surface of the at least one concrete tower section than to a bottom exterior surface of the at least one concrete tower section.
11. A wind turbine tower, comprising:
at least one concrete tower section having a plurality of tensioning cables, the plurality of tensioning cables configured to induce a compressive force on the at least one concrete tower section;
wherein each of the plurality of tensioning cables are spaced from an exterior surface of the at least one concrete tower section by a substantially uniform distance.
12. The wind turbine tower of claim 11 , further comprising:
at least one anchor plate attached to a top portion of the at least one concrete tower section;
wherein each of the plurality of tensioning cables are attached to the at least one anchor plate.
13. The wind turbine tower of claim 12 , wherein each of the plurality of tensioning cables are also attached to a foundation of the wind turbine tower.
14. The wind turbine tower of claim 11 , further comprising:
one or more upper tower sections;
an adapter section located between the at least one concrete tower section and the one or more upper tower sections;
at least one anchor plate attached to at least one of the one or more upper tower sections;
wherein each of the plurality of tensioning cables are attached to the at least one anchor plate.
15. The wind turbine tower of claim 14 , wherein each of the plurality of tensioning cables are attached to a foundation of the wind turbine tower.
16. The wind turbine tower of claim 11 , further comprising:
at least one upper tower section attached to the at least one concrete tower section.
17. The wind turbine tower of claim 16 , wherein at least one upper tower section is comprised of rolled steel.
18. The wind turbine tower of claim 11 , the at least one concrete tower section further comprising:
a plurality of grooves disposed in an exterior surface of the at least one concrete tower section;
wherein each of the plurality of tensioning cables are contained substantially within the plurality of grooves.
19. The wind turbine tower of claim 18 , further comprising:
at least one cover configured to be attached to the wind turbine tower;
wherein the plurality of tensioning cables within the plurality of grooves are covered by the at least one cover.
20. The wind turbine tower of claim 11 , wherein each of the plurality of tensioning cables are configured to be closer to a top exterior surface of the at least one concrete tower section than to a bottom exterior surface of the at least one concrete tower section.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/826,988 US20110138704A1 (en) | 2010-06-30 | 2010-06-30 | Tower with tensioning cables |
JP2011141315A JP2012012929A (en) | 2010-06-30 | 2011-06-27 | Tower having tension cable |
EP11171468A EP2402529A2 (en) | 2010-06-30 | 2011-06-27 | Tower with tensioning cables |
KR1020110063676A KR20120002469A (en) | 2010-06-30 | 2011-06-29 | Tower with tensioning cables |
AU2011203191A AU2011203191A1 (en) | 2010-06-30 | 2011-06-29 | Tower with tensioning cables |
CA2744721A CA2744721A1 (en) | 2010-06-30 | 2011-06-29 | Tower with tensioning cables |
CN2011101899872A CN102312799A (en) | 2010-06-30 | 2011-06-30 | Pylon with tensioned cables |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/826,988 US20110138704A1 (en) | 2010-06-30 | 2010-06-30 | Tower with tensioning cables |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110138704A1 true US20110138704A1 (en) | 2011-06-16 |
Family
ID=44141350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/826,988 Abandoned US20110138704A1 (en) | 2010-06-30 | 2010-06-30 | Tower with tensioning cables |
Country Status (7)
Country | Link |
---|---|
US (1) | US20110138704A1 (en) |
EP (1) | EP2402529A2 (en) |
JP (1) | JP2012012929A (en) |
KR (1) | KR20120002469A (en) |
CN (1) | CN102312799A (en) |
AU (1) | AU2011203191A1 (en) |
CA (1) | CA2744721A1 (en) |
Cited By (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090308006A1 (en) * | 2008-06-13 | 2009-12-17 | Tindall Corporation | Base support for wind-driven power generators |
US20110138707A1 (en) * | 2010-08-18 | 2011-06-16 | General Electric Company | Tower with adapter section |
US20110183094A1 (en) * | 2008-06-30 | 2011-07-28 | Bo Blomqvist | Unstayed composite mast |
DE102011053017A1 (en) * | 2011-08-26 | 2013-02-28 | Max Bögl Wind AG | Method for erecting a tower construction and tower construction |
US20130081342A1 (en) * | 2011-09-30 | 2013-04-04 | Siemens Aktiengesellschaft | Wind turbine tower |
WO2013097866A1 (en) * | 2011-12-28 | 2013-07-04 | Vestas Wind Systems A/S | A ring shaped flange for attachment of a wind turbine tower section to another tower section |
WO2013110448A1 (en) * | 2012-01-23 | 2013-08-01 | Drössler GmbH Umwelttechnik | Hybrid tower |
US20140044554A1 (en) * | 2010-10-20 | 2014-02-13 | Vestas Wind Systems A/S | Foundation for a wind turbine and method of making same |
US20140157715A1 (en) * | 2011-07-17 | 2014-06-12 | Philipp Wagner | Method and Sliding Form for Producing a Structure and Corresponding Structure |
US20140237919A1 (en) * | 2011-09-30 | 2014-08-28 | Siemens Aktiengesellschaft | Wind turbine tower and method of production thereof |
WO2014135393A1 (en) * | 2013-03-05 | 2014-09-12 | Siemens Aktiengesellschaft | Wind turbine tower arrangement |
US20140318033A1 (en) * | 2011-11-08 | 2014-10-30 | Wobben Properties Gmbh | Foundation for a wind turbine |
US8919051B1 (en) * | 2013-12-02 | 2014-12-30 | Abel Echemendia | Tower with exterior cable support and a modular base |
DE102014201507A1 (en) * | 2014-01-28 | 2015-07-30 | Wobben Properties Gmbh | Wind turbine with a fiber winding |
WO2015131174A1 (en) * | 2014-02-28 | 2015-09-03 | University Of Maine System Board Of Trustees | Hybrid concrete - composite tower for a wind turbine |
US9234364B2 (en) * | 2012-10-01 | 2016-01-12 | Gestamp Hybrid Towers, S.L. | Support structure for wind-driven power generators and mold for obtaining such structures |
US20160025074A1 (en) * | 2013-03-13 | 2016-01-28 | Toda Corporation | Floating offshore wind power generation facility |
WO2016116645A1 (en) * | 2015-01-22 | 2016-07-28 | Ingecid Investigación Y Desarrollo De Proyectos, S.L. | Concrete tower |
US20160215761A1 (en) * | 2013-09-06 | 2016-07-28 | youWINenergy GmbH | Tower assembly for a wind turbine installation |
US20160258421A1 (en) * | 2015-03-03 | 2016-09-08 | Nissim Agassi | Reduced profile wind tower system for land-based and offshore applications |
CN106088780A (en) * | 2016-06-29 | 2016-11-09 | 中国航空规划设计研究总院有限公司 | The cast-in-place concrete pylon of pre-made void reinforcement bar truss mould plate and construction method thereof |
US9523211B2 (en) * | 2013-03-21 | 2016-12-20 | Alstom Renewable Technologies | Towers |
WO2017040019A1 (en) * | 2015-08-31 | 2017-03-09 | Siemens Energy, Inc. | Tower segment and method utilizing segmented bearing plate |
US9707699B2 (en) * | 2013-07-17 | 2017-07-18 | Wobben Properties Gmbh | Method for producing a precast concrete segment of a wind turbine tower, and a precast concrete tower segment formwork |
US20180128246A1 (en) * | 2012-04-04 | 2018-05-10 | Forida Development A/S | Wind turbine comprising a tower part of an ultra-high performance fiber reinforced composite |
US10087106B2 (en) * | 2014-09-17 | 2018-10-02 | South China University Of Technology | Method of constructing an axial compression steel tubular column |
US10113327B2 (en) * | 2014-12-01 | 2018-10-30 | Lafarge | Section of concrete |
US10190279B2 (en) * | 2015-12-09 | 2019-01-29 | Innogy Se | Pile for an offshore monopile type foundation structure |
US10316537B2 (en) * | 2015-04-14 | 2019-06-11 | Wobben Properties Gmbh | Tension cord guide in a wind turbine tower |
US10392233B2 (en) * | 2015-03-26 | 2019-08-27 | Liebherr-Werk Biberach Gmbh | Crane tower |
WO2019193388A1 (en) * | 2018-04-03 | 2019-10-10 | Cortina Cordero Alejandro | Transition flange for a hybrid concrete–steel tower for wind turbines |
US10494830B2 (en) * | 2014-10-31 | 2019-12-03 | Soletanche Freyssinet | Method for manufacturing concrete construction blocks for a wind-turbine tower and associated system |
US10513866B2 (en) * | 2018-02-05 | 2019-12-24 | MCA Tecnologia de Estruturas Ltda. | Wind turbine tower and respective foundation base |
US10626573B2 (en) | 2013-06-21 | 2020-04-21 | Wobben Properties Gmbh | Wind turbine and wind turbine foundation |
US10954686B2 (en) | 2015-08-31 | 2021-03-23 | Siemens Gamesa Renewable Energy, Inc. | System and method for installing a tensioning tendon in a wind turbine tower |
EP3929432A4 (en) * | 2019-03-20 | 2022-04-20 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Tower barrel segment, tower frame and wind generating set |
US11441311B1 (en) | 2021-03-31 | 2022-09-13 | United States Of America As Represented By The Administrator Of Nasa | Dynamics management system for a structure using tension and resistance elements |
WO2023287401A1 (en) * | 2021-07-13 | 2023-01-19 | General Electric Company | Wind turbine tower structure with transition system between sections thereof |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103423099A (en) * | 2012-05-21 | 2013-12-04 | 上海电气风能有限公司 | Mixed tower supporting structure capable of being used in large-size land wind generating set |
CN103147935A (en) * | 2013-03-27 | 2013-06-12 | 湘电风能有限公司 | Tower barrel of wind power generator unit and wind power generator unit |
MX2018002589A (en) * | 2015-08-31 | 2019-01-24 | Siemens Gamesa Renewable Energy Inc | Concrete equipment tower with tensioning tendon guide slot. |
CN105179183A (en) * | 2015-09-11 | 2015-12-23 | 中国航空规划设计研究总院有限公司 | Prestressed concrete wind power tower system and construction method thereof |
DE102016203494A1 (en) * | 2016-01-20 | 2017-07-20 | Ventur GmbH | Adapter device for a tower and method of manufacture |
WO2020048572A1 (en) * | 2018-09-06 | 2020-03-12 | Vestas Wind Systems A/S | Wind turbine tower and method of installing a wind turbine tower |
CN111720269B (en) * | 2019-03-20 | 2022-07-05 | 新疆金风科技股份有限公司 | Anchoring device and tower |
EP3845354A3 (en) | 2019-12-10 | 2021-09-15 | Wobben Properties GmbH | Method of manufacturing segments for a tower, prestressed segment, tower ring, tower, wind turbine and prestressing device |
WO2022254475A1 (en) * | 2021-05-31 | 2022-12-08 | 會澤高圧コンクリート株式会社 | Support column comprising concrete support column and steel tube support column for wind power electricity generating facility |
WO2023175566A1 (en) * | 2022-03-17 | 2023-09-21 | Rute Foundation Systems, Inc. | Post-tensioned wind turbine foundation |
EP4345297A1 (en) * | 2022-09-27 | 2024-04-03 | Nordex Energy Spain, S.A.U. | Tower of a wind turbine |
WO2024068727A1 (en) * | 2022-09-27 | 2024-04-04 | Nordex Energy Se & Co. Kg | Tower of a wind turbine |
CN115949279B (en) * | 2023-03-14 | 2023-06-02 | 厦门环寂高科有限公司 | Take shaft tower reinforcing apparatus of light cable |
EP4343145A1 (en) * | 2023-06-21 | 2024-03-27 | Nordex Energy Spain, S.A.U. | Set of concrete segments of adjacent sections of a wind turbine tower, and method of assembling a wind turbine |
Citations (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3000144A (en) * | 1956-03-07 | 1961-09-19 | Casavan Ind | Composite panels for building constructions |
US3300942A (en) * | 1964-02-10 | 1967-01-31 | Dravco Corp | Method of constructing natural draft cooling tower |
US3353315A (en) * | 1964-09-30 | 1967-11-21 | Barker George | Grooved panel with load-bearing strips |
US3524323A (en) * | 1969-02-24 | 1970-08-18 | Chicago Bridge & Iron Co | Offshore storage tank with self-contained guy system |
USRE27732E (en) * | 1971-02-22 | 1973-08-14 | Reinforcement of concrete structures | |
US3791912A (en) * | 1970-07-22 | 1974-02-12 | Francois Allard | Construction member |
US3961118A (en) * | 1972-09-21 | 1976-06-01 | Plastics Development Corporation Of America | Simulated wood panel |
US4092811A (en) * | 1977-02-14 | 1978-06-06 | T. Y. Lin International | Cooling tower, construction method therefor and precast prestressed concrete building units |
US4232495A (en) * | 1977-11-03 | 1980-11-11 | T. Y. Lin International | Precast units for constructing cooling towers and the like |
US4648147A (en) * | 1984-09-21 | 1987-03-10 | Egbert Zimmermann | Support for a tension tie member, such as a diagonal cable in a stayed girder bridge |
US4696601A (en) * | 1986-07-14 | 1987-09-29 | Exxon Production Research Company | Articulated compliant offshore structure |
US4810135A (en) * | 1987-06-04 | 1989-03-07 | Exxon Production Research Company | Compliant offshore structure with fixed base |
US5379563A (en) * | 1993-09-13 | 1995-01-10 | Eastman Chemical Company | Anchoring assembly |
US6151860A (en) * | 1997-11-12 | 2000-11-28 | Laminated Wood Systems | Methods of raising utility pole transmission cables |
US20030000165A1 (en) * | 2001-06-27 | 2003-01-02 | Tadros Maher K. | Precast post-tensioned segmental pole system |
US6655097B1 (en) * | 2002-03-28 | 2003-12-02 | Billy E. Poolaw | Method and apparatus for maintaining a column in an upright position |
US20040020158A1 (en) * | 2002-08-02 | 2004-02-05 | Kopshever Michael J. | Tower apparatus |
US6694698B2 (en) * | 2002-05-03 | 2004-02-24 | Creative Design & Maching, Inc. | Reinforcement apparatus for monopole towers |
US20040065030A1 (en) * | 2002-10-04 | 2004-04-08 | Sergio Zambelli | Device for connecting a beam to pillars or similar supporting structural elements for erecting buildings |
US20040139665A1 (en) * | 2003-03-07 | 2004-07-22 | Ray Ullrich | Method and arrangement for utility pole reinforcement |
US7059095B1 (en) * | 2002-10-11 | 2006-06-13 | Stevens James A | Anchored monopole upgrade system |
US7114295B2 (en) * | 2000-07-12 | 2006-10-03 | Aloys Wobben | Tower made of prestressed concrete prefabricated assembly units |
US7508088B2 (en) * | 2005-06-30 | 2009-03-24 | General Electric Company | System and method for installing a wind turbine at an offshore location |
US20090308006A1 (en) * | 2008-06-13 | 2009-12-17 | Tindall Corporation | Base support for wind-driven power generators |
US7694473B2 (en) * | 2007-06-28 | 2010-04-13 | Nordex Energy Gmbh | Wind energy plant tower |
US7770343B2 (en) * | 2005-04-21 | 2010-08-10 | Structural Concrete & Steel, S.L. | Prefabricated modular tower |
US7805895B2 (en) * | 2008-12-16 | 2010-10-05 | Vestas Wind Systems A/S | Foundation for enabling anchoring of a wind turbine tower thereto by means of replaceable through-bolts |
US20100257811A1 (en) * | 2009-04-08 | 2010-10-14 | Nordex Energy Gmbh | Anchoring assembly part for a tower of a wind turbine |
US7905069B1 (en) * | 2005-12-30 | 2011-03-15 | Aero Solutions, Llc | Reinforcing systems to strengthen monopole towers |
US20120017536A1 (en) * | 2009-03-19 | 2012-01-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Telecommunication Tower Segment |
US20120124924A1 (en) * | 2007-01-30 | 2012-05-24 | Tooman Norman L | Wind Turbine Installation Comprising an Apparatus for Protection of Anchor Bolts and Method of Installation. |
US20120159875A1 (en) * | 2009-07-13 | 2012-06-28 | Max Meyer | Telescopic tower assembly and method |
-
2010
- 2010-06-30 US US12/826,988 patent/US20110138704A1/en not_active Abandoned
-
2011
- 2011-06-27 EP EP11171468A patent/EP2402529A2/en not_active Withdrawn
- 2011-06-27 JP JP2011141315A patent/JP2012012929A/en not_active Withdrawn
- 2011-06-29 KR KR1020110063676A patent/KR20120002469A/en not_active Application Discontinuation
- 2011-06-29 CA CA2744721A patent/CA2744721A1/en not_active Abandoned
- 2011-06-29 AU AU2011203191A patent/AU2011203191A1/en not_active Abandoned
- 2011-06-30 CN CN2011101899872A patent/CN102312799A/en active Pending
Patent Citations (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3000144A (en) * | 1956-03-07 | 1961-09-19 | Casavan Ind | Composite panels for building constructions |
US3300942A (en) * | 1964-02-10 | 1967-01-31 | Dravco Corp | Method of constructing natural draft cooling tower |
US3353315A (en) * | 1964-09-30 | 1967-11-21 | Barker George | Grooved panel with load-bearing strips |
US3524323A (en) * | 1969-02-24 | 1970-08-18 | Chicago Bridge & Iron Co | Offshore storage tank with self-contained guy system |
US3791912A (en) * | 1970-07-22 | 1974-02-12 | Francois Allard | Construction member |
USRE27732E (en) * | 1971-02-22 | 1973-08-14 | Reinforcement of concrete structures | |
US3961118A (en) * | 1972-09-21 | 1976-06-01 | Plastics Development Corporation Of America | Simulated wood panel |
US4092811A (en) * | 1977-02-14 | 1978-06-06 | T. Y. Lin International | Cooling tower, construction method therefor and precast prestressed concrete building units |
US4232495A (en) * | 1977-11-03 | 1980-11-11 | T. Y. Lin International | Precast units for constructing cooling towers and the like |
US4648147A (en) * | 1984-09-21 | 1987-03-10 | Egbert Zimmermann | Support for a tension tie member, such as a diagonal cable in a stayed girder bridge |
US4696601A (en) * | 1986-07-14 | 1987-09-29 | Exxon Production Research Company | Articulated compliant offshore structure |
US4810135A (en) * | 1987-06-04 | 1989-03-07 | Exxon Production Research Company | Compliant offshore structure with fixed base |
US5379563A (en) * | 1993-09-13 | 1995-01-10 | Eastman Chemical Company | Anchoring assembly |
US6151860A (en) * | 1997-11-12 | 2000-11-28 | Laminated Wood Systems | Methods of raising utility pole transmission cables |
US7114295B2 (en) * | 2000-07-12 | 2006-10-03 | Aloys Wobben | Tower made of prestressed concrete prefabricated assembly units |
US20030000165A1 (en) * | 2001-06-27 | 2003-01-02 | Tadros Maher K. | Precast post-tensioned segmental pole system |
US6655097B1 (en) * | 2002-03-28 | 2003-12-02 | Billy E. Poolaw | Method and apparatus for maintaining a column in an upright position |
US6694698B2 (en) * | 2002-05-03 | 2004-02-24 | Creative Design & Maching, Inc. | Reinforcement apparatus for monopole towers |
US20040020158A1 (en) * | 2002-08-02 | 2004-02-05 | Kopshever Michael J. | Tower apparatus |
US20040065030A1 (en) * | 2002-10-04 | 2004-04-08 | Sergio Zambelli | Device for connecting a beam to pillars or similar supporting structural elements for erecting buildings |
US7059095B1 (en) * | 2002-10-11 | 2006-06-13 | Stevens James A | Anchored monopole upgrade system |
US20040139665A1 (en) * | 2003-03-07 | 2004-07-22 | Ray Ullrich | Method and arrangement for utility pole reinforcement |
US7770343B2 (en) * | 2005-04-21 | 2010-08-10 | Structural Concrete & Steel, S.L. | Prefabricated modular tower |
US7508088B2 (en) * | 2005-06-30 | 2009-03-24 | General Electric Company | System and method for installing a wind turbine at an offshore location |
US7905069B1 (en) * | 2005-12-30 | 2011-03-15 | Aero Solutions, Llc | Reinforcing systems to strengthen monopole towers |
US20120124924A1 (en) * | 2007-01-30 | 2012-05-24 | Tooman Norman L | Wind Turbine Installation Comprising an Apparatus for Protection of Anchor Bolts and Method of Installation. |
US7694473B2 (en) * | 2007-06-28 | 2010-04-13 | Nordex Energy Gmbh | Wind energy plant tower |
US20090308006A1 (en) * | 2008-06-13 | 2009-12-17 | Tindall Corporation | Base support for wind-driven power generators |
US7805895B2 (en) * | 2008-12-16 | 2010-10-05 | Vestas Wind Systems A/S | Foundation for enabling anchoring of a wind turbine tower thereto by means of replaceable through-bolts |
US20120017536A1 (en) * | 2009-03-19 | 2012-01-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Telecommunication Tower Segment |
US20100257811A1 (en) * | 2009-04-08 | 2010-10-14 | Nordex Energy Gmbh | Anchoring assembly part for a tower of a wind turbine |
US20120159875A1 (en) * | 2009-07-13 | 2012-06-28 | Max Meyer | Telescopic tower assembly and method |
Cited By (70)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130269270A1 (en) * | 2008-06-13 | 2013-10-17 | Tindall Corporation | Base support for wind-driven power generators |
US8516774B2 (en) | 2008-06-13 | 2013-08-27 | Tindall Corporation | Methods for constructing a base structure for a support tower |
US8458970B2 (en) * | 2008-06-13 | 2013-06-11 | Tindall Corporation | Base support for wind-driven power generators |
US8734705B2 (en) | 2008-06-13 | 2014-05-27 | Tindall Corporation | Method for fabrication of structures used in construction of tower base supports |
US8322093B2 (en) | 2008-06-13 | 2012-12-04 | Tindall Corporation | Base support for wind-driven power generators |
US20160002945A1 (en) * | 2008-06-13 | 2016-01-07 | Tindall Corporation | Base structure for support tower |
US8733045B2 (en) * | 2008-06-13 | 2014-05-27 | Tindall Corporation | Base support for wind-driven power generators |
US8782966B2 (en) * | 2008-06-13 | 2014-07-22 | Tindall Corporation | Base support for wind-driven power generators |
US20090307998A1 (en) * | 2008-06-13 | 2009-12-17 | Tindall Corporation | Base support for wind-driven power generators |
US20090308006A1 (en) * | 2008-06-13 | 2009-12-17 | Tindall Corporation | Base support for wind-driven power generators |
US20110183094A1 (en) * | 2008-06-30 | 2011-07-28 | Bo Blomqvist | Unstayed composite mast |
US8307593B2 (en) * | 2010-08-18 | 2012-11-13 | General Electric Company | Tower with adapter section |
US20110138707A1 (en) * | 2010-08-18 | 2011-06-16 | General Electric Company | Tower with adapter section |
US20140044554A1 (en) * | 2010-10-20 | 2014-02-13 | Vestas Wind Systems A/S | Foundation for a wind turbine and method of making same |
US10107265B2 (en) * | 2010-10-20 | 2018-10-23 | Mhi Vestas Offshore Wind A/S | Foundation for a wind turbine and method of making same |
US9657722B2 (en) * | 2011-07-17 | 2017-05-23 | X-Tower Consructions GmbH | Method and sliding form for producing a structure and corresponding structure |
US20140157715A1 (en) * | 2011-07-17 | 2014-06-12 | Philipp Wagner | Method and Sliding Form for Producing a Structure and Corresponding Structure |
DE102011053017A1 (en) * | 2011-08-26 | 2013-02-28 | Max Bögl Wind AG | Method for erecting a tower construction and tower construction |
US20140237919A1 (en) * | 2011-09-30 | 2014-08-28 | Siemens Aktiengesellschaft | Wind turbine tower and method of production thereof |
US9567981B2 (en) * | 2011-09-30 | 2017-02-14 | Siemens Aktiengesellschaft | Wind turbine tower and method of production thereof |
US20130081342A1 (en) * | 2011-09-30 | 2013-04-04 | Siemens Aktiengesellschaft | Wind turbine tower |
US20140318033A1 (en) * | 2011-11-08 | 2014-10-30 | Wobben Properties Gmbh | Foundation for a wind turbine |
US9322396B2 (en) * | 2011-11-08 | 2016-04-26 | Wobben Properties Gmbh | Foundation for a wind turbine |
WO2013097866A1 (en) * | 2011-12-28 | 2013-07-04 | Vestas Wind Systems A/S | A ring shaped flange for attachment of a wind turbine tower section to another tower section |
WO2013110448A1 (en) * | 2012-01-23 | 2013-08-01 | Drössler GmbH Umwelttechnik | Hybrid tower |
US20180128246A1 (en) * | 2012-04-04 | 2018-05-10 | Forida Development A/S | Wind turbine comprising a tower part of an ultra-high performance fiber reinforced composite |
US9234364B2 (en) * | 2012-10-01 | 2016-01-12 | Gestamp Hybrid Towers, S.L. | Support structure for wind-driven power generators and mold for obtaining such structures |
AU2013326424B2 (en) * | 2012-10-01 | 2017-11-09 | Gestamp Hybrid Towers, S.L. | Support structure for wind turbines and mould for manufacturing such structures |
US9032674B2 (en) * | 2013-03-05 | 2015-05-19 | Siemens Aktiengesellschaft | Wind turbine tower arrangement |
WO2014135393A1 (en) * | 2013-03-05 | 2014-09-12 | Siemens Aktiengesellschaft | Wind turbine tower arrangement |
CN105008717A (en) * | 2013-03-05 | 2015-10-28 | 西门子公司 | Wind turbine tower arrangement |
US20160025074A1 (en) * | 2013-03-13 | 2016-01-28 | Toda Corporation | Floating offshore wind power generation facility |
US9777713B2 (en) * | 2013-03-13 | 2017-10-03 | Toda Corporation | Floating offshore wind power generation facility |
US9523211B2 (en) * | 2013-03-21 | 2016-12-20 | Alstom Renewable Technologies | Towers |
US10626573B2 (en) | 2013-06-21 | 2020-04-21 | Wobben Properties Gmbh | Wind turbine and wind turbine foundation |
US9707699B2 (en) * | 2013-07-17 | 2017-07-18 | Wobben Properties Gmbh | Method for producing a precast concrete segment of a wind turbine tower, and a precast concrete tower segment formwork |
US20160215761A1 (en) * | 2013-09-06 | 2016-07-28 | youWINenergy GmbH | Tower assembly for a wind turbine installation |
US8919051B1 (en) * | 2013-12-02 | 2014-12-30 | Abel Echemendia | Tower with exterior cable support and a modular base |
US10294924B2 (en) | 2014-01-28 | 2019-05-21 | Wobben Properties Gmbh | Wind turbine having a fiber winding |
DE102014201507A1 (en) * | 2014-01-28 | 2015-07-30 | Wobben Properties Gmbh | Wind turbine with a fiber winding |
US20190136566A1 (en) * | 2014-02-28 | 2019-05-09 | University Of Maine System Board Of Trustees | Hybrid concrete - composite tower for a wind turbine and method of manufacturing |
EP3111022A4 (en) * | 2014-02-28 | 2017-11-01 | University of Maine System Board of Trustees | Hybrid concrete - composite tower for a wind turbine |
CN106164396A (en) * | 2014-02-28 | 2016-11-23 | 缅因大学系统理事会 | Mixed type concrete composite material pylon for wind turbine |
WO2015131174A1 (en) * | 2014-02-28 | 2015-09-03 | University Of Maine System Board Of Trustees | Hybrid concrete - composite tower for a wind turbine |
US10519685B2 (en) | 2014-02-28 | 2019-12-31 | University Of Maine System Board Of Trustees | Hybrid concrete-composite tower for a wind turbine and method of manufacturing |
US10087106B2 (en) * | 2014-09-17 | 2018-10-02 | South China University Of Technology | Method of constructing an axial compression steel tubular column |
US10494830B2 (en) * | 2014-10-31 | 2019-12-03 | Soletanche Freyssinet | Method for manufacturing concrete construction blocks for a wind-turbine tower and associated system |
US10113327B2 (en) * | 2014-12-01 | 2018-10-30 | Lafarge | Section of concrete |
WO2016116645A1 (en) * | 2015-01-22 | 2016-07-28 | Ingecid Investigación Y Desarrollo De Proyectos, S.L. | Concrete tower |
US20160258421A1 (en) * | 2015-03-03 | 2016-09-08 | Nissim Agassi | Reduced profile wind tower system for land-based and offshore applications |
WO2016140892A1 (en) * | 2015-03-03 | 2016-09-09 | Agassi Nissim | Reduced profile wind tower system for land-based and offshore applications |
US20220282705A1 (en) * | 2015-03-03 | 2022-09-08 | Nissim Agassi | Reduced profile wind tower system for land-based and offshore applications |
US11384735B2 (en) * | 2015-03-03 | 2022-07-12 | Nissim Agassi | Reduced profile wind tower system for land-based and offshore applications |
US11460004B2 (en) * | 2015-03-03 | 2022-10-04 | Nissim Agassi | Reduced profile wind tower system for land-based and offshore applications |
CN107429670A (en) * | 2015-03-03 | 2017-12-01 | 尼西姆·阿加西 | The wind tower system for the reduction profile applied for continental rise and coastal waters |
US10465660B2 (en) * | 2015-03-03 | 2019-11-05 | Nissim Agassi | Reduced profile wind tower system for land-based and offshore applications |
US10392233B2 (en) * | 2015-03-26 | 2019-08-27 | Liebherr-Werk Biberach Gmbh | Crane tower |
US10316537B2 (en) * | 2015-04-14 | 2019-06-11 | Wobben Properties Gmbh | Tension cord guide in a wind turbine tower |
WO2017040019A1 (en) * | 2015-08-31 | 2017-03-09 | Siemens Energy, Inc. | Tower segment and method utilizing segmented bearing plate |
US10954686B2 (en) | 2015-08-31 | 2021-03-23 | Siemens Gamesa Renewable Energy, Inc. | System and method for installing a tensioning tendon in a wind turbine tower |
US10280643B2 (en) | 2015-08-31 | 2019-05-07 | Wind Tower Technologies, Llc | Tower segment and method utilizing segmented bearing plate |
US10190279B2 (en) * | 2015-12-09 | 2019-01-29 | Innogy Se | Pile for an offshore monopile type foundation structure |
CN106088780A (en) * | 2016-06-29 | 2016-11-09 | 中国航空规划设计研究总院有限公司 | The cast-in-place concrete pylon of pre-made void reinforcement bar truss mould plate and construction method thereof |
US10513866B2 (en) * | 2018-02-05 | 2019-12-24 | MCA Tecnologia de Estruturas Ltda. | Wind turbine tower and respective foundation base |
WO2019193388A1 (en) * | 2018-04-03 | 2019-10-10 | Cortina Cordero Alejandro | Transition flange for a hybrid concrete–steel tower for wind turbines |
EP3929432A4 (en) * | 2019-03-20 | 2022-04-20 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Tower barrel segment, tower frame and wind generating set |
AU2020243633B2 (en) * | 2019-03-20 | 2023-07-13 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Tower barrel segment, tower frame and wind generating set |
US11814856B2 (en) | 2019-03-20 | 2023-11-14 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Tower tube section, tower frame and wind power generator set |
US11441311B1 (en) | 2021-03-31 | 2022-09-13 | United States Of America As Represented By The Administrator Of Nasa | Dynamics management system for a structure using tension and resistance elements |
WO2023287401A1 (en) * | 2021-07-13 | 2023-01-19 | General Electric Company | Wind turbine tower structure with transition system between sections thereof |
Also Published As
Publication number | Publication date |
---|---|
CN102312799A (en) | 2012-01-11 |
CA2744721A1 (en) | 2011-12-30 |
JP2012012929A (en) | 2012-01-19 |
KR20120002469A (en) | 2012-01-05 |
EP2402529A2 (en) | 2012-01-04 |
AU2011203191A1 (en) | 2012-01-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20110138704A1 (en) | Tower with tensioning cables | |
EP2420639B1 (en) | Tower with adapter section | |
CA2713522C (en) | Wind turbine tower and system and method for fabricating the same | |
EP1876316B1 (en) | Prefabricated modular tower | |
US6851231B2 (en) | Precast post-tensioned segmental pole system | |
US7805895B2 (en) | Foundation for enabling anchoring of a wind turbine tower thereto by means of replaceable through-bolts | |
US20100132270A1 (en) | Modular surface foundation for wind turbine space frame towers | |
DK2570555T3 (en) | A tower base section of a wind turbine, a wind turbine and a system for mounting a tower | |
US20090313913A1 (en) | Polymeric concrete for wind generator towers or other large structural applicatons | |
AU2011267375A1 (en) | Tower comprising an adapter piece and method for producing a tower comprising an adapter piece | |
US10358787B2 (en) | Wind turbine | |
US8607517B2 (en) | Tower foundation | |
US8499513B2 (en) | Tower foundation | |
CN210621743U (en) | Support rod of tower drum foundation and tower drum foundation | |
JP2009019550A (en) | Wind-power generator apparatus | |
CN109930892A (en) | A kind of pre-tensioning system fragment prefabricated prestressing concrete tower structure | |
CN214196556U (en) | Tower and wind generating set | |
CN116240886A (en) | Device for assisting prestress anchor bolt assembly in adjusting concentricity and construction method | |
CN117508487A (en) | Offshore wind power floating foundation and installation method thereof | |
Tadros et al. | Precast post-tensioned segmental pole system: US Patent NO. US 6,851,231 B2 | |
EP2951354A1 (en) | Tower foundation |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GENERAL ELECTRIC COMPANY, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BAGEPALLI, BHARAT SAMPATHKUMARAN;SAYERS, COLWYN MARK OSCAR;REEL/FRAME:024616/0084 Effective date: 20100628 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |