WO2023031491A1 - Cimentación prefabricada híbrida para torres y método de instalación de cimentación prefabricada híbrida para torres - Google Patents
Cimentación prefabricada híbrida para torres y método de instalación de cimentación prefabricada híbrida para torres Download PDFInfo
- Publication number
- WO2023031491A1 WO2023031491A1 PCT/ES2021/070648 ES2021070648W WO2023031491A1 WO 2023031491 A1 WO2023031491 A1 WO 2023031491A1 ES 2021070648 W ES2021070648 W ES 2021070648W WO 2023031491 A1 WO2023031491 A1 WO 2023031491A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pedestal
- sectors
- sector
- pieces
- tower
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 225
- 238000004873 anchoring Methods 0.000 claims abstract description 12
- 238000011065 in-situ storage Methods 0.000 claims abstract description 7
- 239000004567 concrete Substances 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 8
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
-
- 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
- the present invention belongs to the construction sector, specifically to the construction of towers, masts and posts, and more specifically to the installation of wind turbine towers, and specifically to the foundations of said towers.
- the present invention refers to a hybrid prefabricated foundation for towers, that is to say, it has prefabricated parts such as the pedestal and the ribs, and additionally the bottom slab that is concreted in situ.
- the present invention further relates to a method of installing said foundation for hybrid precast towers.
- the present invention solves the existing problems in the state of the art by means of a precast hybrid foundation for towers, which is made up of a circular slab made in-situ, with a set made up of a cylindrical pedestal and a plurality of ribs being arranged on it. joined by a union end to said pedestal, and arranged radially on the slab.
- the fixing of a tower will be carried out on the pedestal by means of the tower bolt cage, which has a plurality of anchor bolts, a lower flange and an upper flange.
- the foundation is considered hybrid prefabricated because it has elements prefabricated in the workshop (ribs and pedestal) and others made on site (bottom slab).
- the bolt cage that includes the anchor bolts, the lower flange and the upper flange is not part of the foundation object of the invention, but is an integral part of the tower.
- the foundation object of the invention will be adapted to the bolt cage of the tower that it is going to support, and not vice versa.
- the pedestal and rib assembly is made up of a plurality of prefabricated upper parts and a plurality of prefabricated lower parts.
- the upper pieces in turn have a rib, and attached to the upper part of its joining end an upper pedestal sector in such a way that a portion of the upper pedestal sector remains on each side of the rib, while the lower pieces have a rib, in turn, and joined to the lower part of its union end a lower pedestal sector in such a way that a portion of the lower pedestal sector remains on each side of the rib.
- the upper pieces and the lower pieces are placed radially alternated with each other and are vertically overlapped attached to each other in an alternating manner, ie, an upper piece, a lower piece, an upper piece, etc.
- each portion of the upper sector of the pedestal of each upper part is arranged on a portion of the lower sector of the pedestal of each of the lower parts adjacent to each upper part.
- one of the portions of the upper sector of the pedestal on one side of the rib is arranged on a portion of the lower sector of the pedestal of the lower piece contiguous to one side of the upper piece, while the other portion of the upper sector of the pedestal on the other side of the rib is arranged on a portion of the lower sector of the pedestal of the lower part contiguous to the other side of the upper part.
- the upper sectors of the pedestal of the upper pieces they are arranged on the lower pedestal sectors of the adjoining lower pieces, the upper pedestal sectors and the lower pedestal sectors forming the complete pedestal, the upper pieces fitting onto the lower pieces as in a puzzle, achieving the complete pedestal.
- This pedestal has a plurality of anchoring holes parallel to the axis of the pedestal and through the entire height of said pedestal, to house anchor bolts for the tower, for anchoring said tower to the pedestal.
- these through anchoring holes along the pedestal are obtained by a set of through holes arranged in the upper sectors of the pedestal and a set of through holes arranged in the lower sectors of the pedestal, the holes in the upper sectors of the pedestal being aligned. pedestal with the holes of the lower sectors of the pedestal, to form the through anchoring holes of the complete pedestal.
- the foundation has a plurality of post-tensioning bolts that are housed in a plurality of through-holes arranged in the pedestal, parallel to the axis of said pedestal.
- these through housings along the pedestal are obtained by means of a set of through housings arranged in the upper sectors of the pedestal and a set of through housings arranged in the lower sectors of the pedestal, being Aligning the housings of the upper sectors of the pedestal with the housings of the lower sectors of the pedestal, to form the through housings of the complete pedestal.
- the lower base of the upper pedestal sectors has crenellations while the upper base of the lower pedestal sectors have crenellations complementary to the crenellations of the upper pedestal sectors, in such a way that that said crenellations of both sectors of the pedestal fit together, ensuring and improving the union between the upper and lower parts.
- This option complicates the manufacture of the molds for the upper and lower parts, so it will only be applied in the event that the anchor bolts, and the post-tensioning bolts, where appropriate, are insufficient for fixing the upper sectors of pedestal on the lower pedestal sectors.
- the main difference between the foundations that are the object of the present invention and the existing hybrid prefabricated ones in the state of the art consists in the way of joining the prefabricated pieces together to form the pedestal.
- the different sectors are joined laterally, that is, the lateral faces of the pedestal sectors are joined to the lateral faces of the adjacent pedestal sectors and post-tensioning and jointing are performed. circumferential.
- the different sectors or portions overlap vertically, that is, the upper pedestal sectors are joined on the lower pedestal sectors.
- the upper pieces and the lower pieces are joined by overlapping vertically, one on top of the other, in the area of the pedestal.
- the tightening between these parts is done by using the bolt cage (including the anchor bolts and upper and lower flanges), the anchor bolts going through the upper and lower parts, and preferably through the use of post-tensioned bolts that go through likewise the upper and lower pieces.
- the friction between the lower face of the upper sector of the pedestal and the upper face of the lower sector of the pedestal prevents lateral displacements, providing greater security to the joint.
- the present invention refers to a method of installing the hybrid precast foundation for towers described above, which has the following stages:
- a cleaning concrete pour is carried out in the area where the that the foundation is going to be made, then the positioning on said cleaning concrete of the anchor bolts and the lower flange of the tower that is going to be installed on the foundation, and then the positioning of the lower parts (which include the ribs and the lower pedestal sectors, leaving a portion of the lower pedestal sector on each side of the rib) on the cleaning concrete, introducing the anchor bolts through the anchor holes of the lower pedestal sectors.
- the lower pieces are leveled to fix them in their exact position.
- the positioning of the upper pieces (which include the ribs and the upper sectors of the pedestal, leaving a portion of the upper sector of the pedestal on each side of the rib) is carried out on the lower pieces, so that the upper pieces and the bottom pieces are placed radially alternated with each other and vertically overlapped attached to each other in an alternating manner, ie, a top piece, a bottom piece, a top piece, etc.
- This alternating vertical overlapping is carried out in such a way that each portion of the upper sector of the pedestal of each upper part is arranged on a portion of the lower sector of the pedestal of each of the lower parts adjacent to each upper part.
- one of the portions of the upper sector of the pedestal on one side of the rib is arranged on a portion of the lower sector of the pedestal of the lower piece contiguous to one side of the upper piece, while the other portion of the upper sector of the pedestal on the other side of the rib is arranged on a portion of the lower sector of the pedestal of the lower part contiguous to the other side of the upper part.
- the upper pedestal sectors of the upper pieces are arranged on the lower pedestal sectors of the adjoining lower pieces, the upper pedestal sectors and the lower pedestal sectors forming the complete pedestal, the upper pieces fitting onto the lower pieces like in a puzzle, getting the complete pedestal.
- the anchor bolts are introduced through the anchor holes of the upper sectors of the pedestal.
- the upper pieces are leveled, in order to guarantee full contact between the faces of the upper and lower pieces, and the post-tensioning bolts are installed in the pedestal housings and the post-tensioning bolts are tightened.
- the concreting of the slab is carried out and the positioning of the upper flange of the tower's bolt cage is carried out on top of the anchor bolts that protrude from the pedestal.
- a post-tensioning of the pedestal is carried out, inserting post-tensioning bolts into the pedestal housings, and finally, after the assembly of the tower and the post-tensioning of the anchor bolts, a new tensioning or additional re-tensioning of these post-tensioning bolts is carried out.
- Figure 1 shows an initial stage of a state-of-the-art foundation in which all the pieces made up of a rib and a pedestal sector joined laterally are observed, forming the complete pedestal.
- Figure 2 shows a final stage of the foundation of the state of the art of figure 1 in which the bottom slab has been concreted.
- Figure 3 shows a horizontal sectional view of the foundation of the state of the art of Figures 1 and 2, showing post-tensioned cables circumferentially tying all the pedestal sectors that form the complete pedestal.
- Figure 4 is a perspective of an embodiment of the foundation object of the present invention showing its main components, with the tower attached to said foundation.
- Figure 5 is a precast upper part of the foundation of Figure 4, showing a pedestal upper sector portion on each side of the rib.
- Figure 6 is a precast lower part of the foundation of Figure 4, showing a pedestal lower sector portion on each side of the rib.
- Figure 7 is a perspective detail view of an embodiment of the foundation in which the tower is not arranged in order to show the anchor bolts of said tower, and in which one of the upper parts and a post-tensioning bolt they are not fully installed to show assembly detail.
- Figure 8 shows the pedestal between two ribs in detail, showing an upper pedestal sector arranged on a lower pedestal sector.
- Figure 9 shows in detail a particular embodiment of a lower part which includes crenellations on its upper surface.
- Figures 10a-10e show in sequence the different stages of a hybrid precast foundation installation method for towers object of the present invention.
- the object of the present invention is a precast hybrid foundation for towers (12).
- the foundation is made up of a circular slab (3) made in-situ, a set formed by a cylindrical pedestal (4) and a plurality of ribs being arranged on said slab (3). (8) joined by a union end (11) to said pedestal (4), leaving said ribs (8) arranged radially on the slab (3).
- a tower (12) On the pedestal (4), concentric with the slab (3), a tower (12) will be fixed using the tower's bolt cage, which has a plurality of anchor bolts (14), a lower flange (15 ) and an upper flange (13).
- Each of the ribs (8) has in its lower part at least one support leg (9) for fixing the floor ribs (specifically to the cleaning concrete (16)).
- the ribs (8) also present a reinforcing frame (7) in their lower part for fixing the ribs in the concreting of the slab (3).
- the set of pedestal (4) and ribs (8) is made up of a plurality of prefabricated upper parts (1) and a plurality of lower parts. prefabs (2).
- the upper parts (1) in turn have a rib (8), and attached to the upper part of its joining end (11) an upper sector of pedestal (4') in such a way that a portion of the upper sector of pedestal (4') on each side of the rib (8), while
- the lower parts (2) in turn have a rib (8), and attached to the lower part of its union end (11) a lower sector of the pedestal (4") in such a way that a portion of the lower sector remains pedestal (4”) on each side of the rib (8).
- Figures 5 and 6 show an upper part (1) and a lower part (2) respectively.
- the upper pieces (1) and the lower pieces (2) are placed radially alternated with each other and are joined together vertically overlapping alternately, that is, an upper piece (1), a lower piece (2) , an upper piece (1), etc.
- This alternating vertical overlap is carried out in such a way that each portion of the upper sector of the pedestal (4') of each upper part (1) is arranged on a portion of the lower sector of the pedestal (4") of each of the pieces. lower (2) contiguous to each upper piece (1).
- each of the upper parts (1) one of the portions of the upper sector of the pedestal (4') on one side of the rib (8) is arranged on a portion of the lower sector of the pedestal (4") of the lower part (2) adjacent to one side of the upper part (1), while the other portion of the upper sector of the pedestal (4') on the other side of the rib (8) is arranged on a portion of the lower sector of the pedestal ( 4”) from the bottom piece (2) adjacent to the other side of the top piece (1).
- the upper sectors of the pedestal (4') of the upper pieces (1) are arranged on the lower sectors of the pedestal (4") of the contiguous lower pieces (2), forming all the upper sectors of the pedestal (4' ) and all the lower sectors of the pedestal (4”) the pedestal (4) complete.
- Figure 4 shows the set of pedestal (4) and ribs (8) formed by the upper parts (1) and the lower parts (2).
- foundations with ten ribs (8) are usually made, so said foundations will be made up of five upper pieces (1) and five lower pieces (2), although the number of ribs (8) can vary, logically always being the foundation formed by the same number of upper pieces (1) than lower pieces (2).
- This pedestal (4) has a plurality of anchor holes (6) that are parallel to the axis of the pedestal (4) and pass through the entire height of the pedestal (4), to house anchor bolts (14) of the tower (12), intended for anchoring said tower (12) to the pedestal (4).
- these through anchoring holes (6) along the pedestal (4) are obtained by a set of through holes arranged in the upper sectors of the pedestal (4') and a set of through holes arranged in the lower sectors of the pedestal (4"), the holes of the upper sectors of the pedestal (4') being aligned with the holes of the lower sectors of the pedestal (4"), to form the through anchoring holes (6) of the pedestal (4) complete.
- the foundation has a plurality of post-tensioning bolts (10), which are housed in a plurality of through holes (5) arranged in the pedestal (4), parallel to the axis of said pedestal (4).
- these through housings (5) along the entire height of the pedestal (4) are obtained by means of a set of through housings arranged in the upper sectors of the pedestal (4 ') and a set of through housings arranged in the lower sectors of the pedestal (4"), the housings of the upper sectors of the pedestal (4') being aligned with the housings of the lower sectors of the pedestal (4"), to form housings (5) through the pedestal (4) complete.
- the lower base of the upper pedestal sectors (4') has crenellations (17), while the upper base of the lower pedestal sectors (4") has crenellations (17). ) complementary to the crenellations (17) of the upper sectors of the pedestal (4'), in such a way that said crenellations (17) of both pedestal sectors (4', 4”) fit together, ensuring and improving the union between the upper parts (1) and lower parts (2) of the foundation.
- the present invention refers to a method of installing the hybrid precast foundation for towers (12) described above, which has the following stages:
- Figure 10a shows a first stage in which cleaning concrete (16) is poured in the area where the foundation is to be made, then the bolts are positioned on said cleaning concrete (16).
- Figure 10b shows a second stage in which the lower parts (2) are leveled to fix them in their exact position.
- Figure 10c shows a third stage in which the positioning of the upper parts (1) (which include the ribs (8) and the upper sectors of the pedestal (4') is carried out, leaving a portion of the upper sector of the pedestal (4 ') on each side of the rib (8)) on the lower pieces (2), so that the upper pieces (1) and the lower pieces (2) are placed radially alternated with each other and are joined together vertically overlapping each other in a alternate, i.e. a top piece (1), a bottom piece (2), a top piece (1), etc.
- This alternating vertical overlap is carried out in such a way that each portion of the upper sector of the pedestal (4') of each upper part (1) is arranged on a portion of the lower sector of the pedestal (4") of each of the pieces.
- each of the upper parts (1) one of the portions of the upper sector of the pedestal (4') on one side of the rib (8) is arranged on a portion of the lower sector of the pedestal (4") of the lower part (2) adjacent to one side of the upper part (1), while the other portion of the upper sector of the pedestal (4') on the other side of the rib (8) is arranged on a portion of the lower sector of the pedestal ( 4”) from the bottom piece (2) adjacent to the other side of the top piece (1).
- the upper sectors of the pedestal (4') of the upper pieces (1) are arranged on the lower sectors of the pedestal (4") of the contiguous lower pieces (2), forming the upper sectors of the pedestal (4').
- FIG. 10d shows a fourth stage in which the concreting of the slab (3) is carried out and the upper flange (13) of the tower bolt cage (12) is positioned on top of the anchor bolts. (14) that protrude from the pedestal (4) formed by the upper pedestal sectors (4') arranged on the lower pedestal sectors (4”).
- Figure 10e shows the last stage in which the assembly of the tower (12) and subsequent post-tensioning of the anchor bolts (14) is carried out to leave the pedestal (4) and the tower (12) completely made and fixed to it. .
- a new tensioning or additional re-tensioning of these post-tensioning bolts (10) is carried out. ) to secure the grip.
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Abstract
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2021463296A AU2021463296A1 (en) | 2021-09-06 | 2021-09-06 | Hybrid prefabricated foundation for towers and method of installing a hybrid prefabricated foundation for towers |
PCT/ES2021/070648 WO2023031491A1 (es) | 2021-09-06 | 2021-09-06 | Cimentación prefabricada híbrida para torres y método de instalación de cimentación prefabricada híbrida para torres |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/ES2021/070648 WO2023031491A1 (es) | 2021-09-06 | 2021-09-06 | Cimentación prefabricada híbrida para torres y método de instalación de cimentación prefabricada híbrida para torres |
Publications (1)
Publication Number | Publication Date |
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WO2023031491A1 true WO2023031491A1 (es) | 2023-03-09 |
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Family Applications (1)
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PCT/ES2021/070648 WO2023031491A1 (es) | 2021-09-06 | 2021-09-06 | Cimentación prefabricada híbrida para torres y método de instalación de cimentación prefabricada híbrida para torres |
Country Status (2)
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AU (1) | AU2021463296A1 (es) |
WO (1) | WO2023031491A1 (es) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117027044A (zh) * | 2023-09-08 | 2023-11-10 | 北京瑞科同创能源科技有限公司 | 一种基础结构和风力发电机 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011030199A2 (en) * | 2009-09-11 | 2011-03-17 | Stefano Knisel | Improved foundation for a wind turbine tower |
WO2020012346A1 (de) * | 2018-07-13 | 2020-01-16 | Holcim Technology Ltd | Fundament für ein windkraftwerk |
WO2021123489A1 (es) * | 2019-12-19 | 2021-06-24 | Structural Design Engineering, Slu | Cimentación de hormigón para torre eólica y método para su instalación |
-
2021
- 2021-09-06 WO PCT/ES2021/070648 patent/WO2023031491A1/es active Application Filing
- 2021-09-06 AU AU2021463296A patent/AU2021463296A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011030199A2 (en) * | 2009-09-11 | 2011-03-17 | Stefano Knisel | Improved foundation for a wind turbine tower |
WO2020012346A1 (de) * | 2018-07-13 | 2020-01-16 | Holcim Technology Ltd | Fundament für ein windkraftwerk |
WO2021123489A1 (es) * | 2019-12-19 | 2021-06-24 | Structural Design Engineering, Slu | Cimentación de hormigón para torre eólica y método para su instalación |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117027044A (zh) * | 2023-09-08 | 2023-11-10 | 北京瑞科同创能源科技有限公司 | 一种基础结构和风力发电机 |
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AU2021463296A1 (en) | 2024-04-11 |
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