CN106049522A - Hollow wind power generation tower foundation - Google Patents
Hollow wind power generation tower foundation Download PDFInfo
- Publication number
- CN106049522A CN106049522A CN201610514575.4A CN201610514575A CN106049522A CN 106049522 A CN106049522 A CN 106049522A CN 201610514575 A CN201610514575 A CN 201610514575A CN 106049522 A CN106049522 A CN 106049522A
- Authority
- CN
- China
- Prior art keywords
- wind power
- earth anchor
- anchor cage
- crab
- bolt
- 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.)
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Classifications
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- 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
Abstract
The invention relates to a hollow wind power generation tower foundation. The hollow wind power generation tower foundation comprises a wind power generation tower foundation main body, a ground anchor cage, a bed course and ground anchor cage brackets, wherein the ground anchor cage is vertically embedded into the wind power generation tower foundation main body which is formed by pouring concrete, the bed course is arranged under the ground anchor cage and the wind power generation tower foundation main body, a hollow cavity penetrates through the wind power generation tower foundation main body up and down, the bed course is concave downwards in the center of the lower surface of the wind power generation tower foundation main body, so as to form a concave cavity where operation can be conveniently carried out by a person or a tool, the hollow cavity communicates with the concave cavity, the lower end of the ground anchor cage extends into the concave cavity, and the ground anchor cage brackets which are used for supporting the ground anchor cage are arranged in the concave cavity. The hollow wind power generation tower foundation has the beneficial effects that the hollow cavity and the concave cavity are formed in the wind power generation tower foundation main body, so that the person or the tool can conveniently enter the wind power generation tower foundation main body to replace damaged anchor bolts, and the ground anchor cage can be well fixedly supported.
Description
Technical field
The present invention relates to generation power foundation of wind power technical field, particularly relate to the generation power foundation of wind power of a kind of hollow.
Background technology
When using earth anchor cage to connect generation power foundation of wind power and wind power tower drum, the fixing and support of earth anchor cage is needs
, if the not consolidation that earth anchor cage is fixing, there is the situation of absent-mindedness, then causes prestige to wind power generation stepped in the problem considered emphatically
The side of body, when in earth anchor cage, crab-bolt fracture or corrosion occurs owing to bearing reloading for a long time, the safe operation to unit brings
Hidden danger.All it is not provided with in current most of generation power foundation of wind power being easy to people or the chamber of instrument entrance so that the anchor of corrupted
Bolt is non-exchange, repairing, so there is bigger potential safety hazard.
Summary of the invention
The technical problem to be solved is to provide one and is convenient for changing crab-bolt, and can crab-bolt well be fixed
The generation power foundation of wind power of hollow.
The technical scheme is that the generation power foundation of wind power of a kind of hollow, including wind
Power power generation column basic body, earth anchor cage, bed course and earth anchor cage support；Earth anchor cage is vertically embedded in the wind-force become by concreting
In power generation column basic body, bed course is arranged on earth anchor cage and the lower section of generation power foundation of wind power main body, generation power foundation of wind power master
Internal up/down perforation be provided with cavity, bed course at the center position concave downward of generation power foundation of wind power body lower surface,
Forming a caveli being easy to people or tool operation, cavity is connected with caveli, and depression is stretched in the lower end of earth anchor cage
Intracavity, is provided with the earth anchor cage support for supporting earth anchor cage in caveli.
The invention has the beneficial effects as follows: the generation power foundation of wind power main body of a kind of hollow of the present invention is provided with cavity and recessed
Fall into chamber, facilitate people or instrument to enter the crab-bolt wherein changing corrupted, and can preferably fix, support earth anchor cage.
Further: earth anchor cage includes least one set earth anchor cage cylinder, earth anchor cage cylinder by the reinforcing bar of multiple cylindrical distributions with
And it being arranged on the crab-bolt being circumferentially distributed at reinforcing bar two ends, multiple crab-bolts at the multiple reinforcing bar two ends often organized surround upper and lower two anchors
Bolt circle, the upper and lower surface of generation power foundation of wind power main body is respectively provided with upper anchor slab and lower anchor slab, the upper anchor of anchoring earth anchor cage
Plate be arranged over T-flange, the upper end of T-flange is connected with tower, and T-flange, upper anchor slab and lower anchor slab set respectively
Having the first through hole passed for reinforcing bar, the end that the crab-bolt of reinforcing bar upper end contacts with T-flange is provided with nut, reinforcing bar upper end
Crab-bolt is fixed by nut with T-flange, and the end that the crab-bolt of reinforcing bar lower end contacts with lower anchor slab is provided with nut, reinforcing bar lower end
Crab-bolt is fixed by nut with lower anchor slab.
Above-mentioned further scheme provides the benefit that: be fixed on wind power generation stepped by upper anchor slab and lower anchor slab by earth anchor cage
In basic body.
Further: earth anchor cage includes organizing earth anchor cage cylinder more, reinforcing bar and the crab-bolt circle of the earth anchor cage cylinder of different groups are radially inner and outer
Distribution, the axis of many group crab-bolt circles overlaps, and the crab-bolt being radially correspondingly arranged of the reinforcing bar upper end of different groups is by upper anchor slab
Being connected with T-flange, the crab-bolt being radially correspondingly arranged of the reinforcing bar lower end of different groups is connected by lower anchor slab.
Above-mentioned further scheme provides the benefit that: many group crab-bolt circles make earth anchor cage more stable.
Further: earth anchor cage includes two groups of earth anchor cage cylinders.
Above-mentioned further scheme provides the benefit that: two groups of earth anchor cage cylinders are more firm.
Further: the nut of the crab-bolt of fixing reinforcing bar lower end is aluminum matter, copper or nylon nut.
Above-mentioned further scheme provides the benefit that: nut can pull when crab-bolt needs and changes, it is simple to crab-bolt is changed.
Further: earth anchor cage support is provided with multiple, each earth anchor cage support is corresponding with the crab-bolt of reinforcing bar lower end, often respectively
Individual earth anchor cage support includes that two groups of pillars and two gripper shoes, two gripper shoes are respectively the first gripper shoe and the second gripper shoe,
Two groups of pillars are respectively first group of pillar and second group of pillar, and often group pillar includes that two pillars, the two ends of lower anchor slab divide respectively
Not being arranged with the second through hole, the upper end of two pillars of first group of pillar is each passed through the second through hole, and is inserted into wind-force and sends out
Fixing with generation power foundation of wind power main body in electric tower foundation main body and be connected, the lower end of two pillars of first group of pillar is fixedly installed
On the upper surface of the first gripper shoe, the upper end of two pillars of second group of pillar is connected with the lower surface of the first gripper shoe,
The lower end of two pillars of second group of pillar is connected with the second gripper shoe, and the second gripper shoe is connected with the bed course of caveli.
Above-mentioned further scheme provides the benefit that: earth anchor cage support can preferably support earth anchor cage, it is ensured that earth anchor cage
Steady.
Further: the cross section of earth anchor cage, cavity and caveli is circular, in earth anchor cage, cavity and caveli
Dead in line, the diameter of caveli cross section is more than the diameter of earth anchor cage cross section.
Above-mentioned further scheme provides the benefit that: the axis of earth anchor cage, cavity and caveli overlaps, it is ensured that wind
Stablizing of power power generation column basis.
Further: the upper surface center position concave downward of generation power foundation of wind power main body formed one circular recessed
Groove, groove is arranged on the port, upper end of cavity, and the diameter of groove, more than the diameter of cavity, is provided with cover plate in groove, control
The cover plate that the upper end of cavity processed is opened or closed is connected with generation power foundation of wind power body rotation.
Above-mentioned further scheme provides the benefit that: cover plate is arranged in groove so that cover plate for sealing performance is good, it is to avoid rain
Water enters in cavity.
Further: the altitude range of caveli is 0.8 to 1.0 meter.
Above-mentioned further scheme provides the benefit that: the altitude range of caveli is suitable for operator and lies low operation, changes
The crab-bolt of corrupted.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 be the present invention Fig. 1 in a part partial enlarged drawing；
Fig. 3 be the present invention Fig. 1 in b part partial enlarged drawing.
In accompanying drawing, the list of parts representated by each label is as follows:
1, generation power foundation of wind power main body, 2, earth anchor cage, 21, crab-bolt, 22, reinforcing bar, 3, bed course, 4, earth anchor cage support, 41,
First group of pillar, 42, second group of pillar, the 43, first gripper shoe, the 44, second gripper shoe, 5, cavity, 6, caveli, 7, upper anchor
Plate, 8, lower anchor slab, 9, T-flange, the 10, first through hole, the 11, second through hole, 12, cover plate.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
Non-for limiting the scope of the present invention.
As shown in Figure 1, Figure 2 and Figure 3, the generation power foundation of wind power of a kind of hollow, including generation power foundation of wind power main body 1,
Earth anchor cage 2, bed course 3 and earth anchor cage support 4；Earth anchor cage 2 is vertically embedded in the generation power foundation of wind power master become by concreting
In body 1, bed course 3 is arranged on earth anchor cage 2 and the lower section of generation power foundation of wind power main body 1, in generation power foundation of wind power main body 1 up and down
Through is provided with cavity 5, and bed course 3, at the center position concave downward of generation power foundation of wind power main body 1 lower surface, forms one
The individual caveli 6 being easy to people or tool operation, cavity 5 is connected with caveli 6, and caveli 6 is stretched in the lower end of earth anchor cage 2
In, caveli 6 is provided with the earth anchor cage support 4 for supporting earth anchor cage 2.
The generation power foundation of wind power main body of a kind of hollow of the present invention is provided with cavity 5 and caveli 6, facilitates people or work
Tool enters the crab-bolt 21 wherein changing corrupted, and can preferably fix, support earth anchor cage 2.
Further: earth anchor cage 2 includes least one set earth anchor cage cylinder, and earth anchor cage cylinder is by the steel of multiple cylindrical distributions
Muscle 22 and be arranged on the crab-bolt 21 being circumferentially distributed at reinforcing bar 22 two ends, multiple crab-bolts 21 at multiple reinforcing bars 22 two ends often organized
Surrounding upper and lower two crab-bolt circles, the upper and lower surface of generation power foundation of wind power main body 1 is respectively provided with the upper anchor of anchoring earth anchor cage 2
Plate 7 and lower anchor slab 8, upper anchor slab 7 be arranged over T-flange 9, the upper end of T-flange 9 is connected with tower, T-flange 9, on
The first through hole 10 that reinforcing bar 22 passes it is respectively provided with, crab-bolt 21 and the described T of reinforcing bar 22 upper end on anchor slab 7 and lower anchor slab 8
The end of type flange 9 contact is provided with nut, and the crab-bolt 21 of reinforcing bar 22 upper end is fixed by nut with described T-flange 9, reinforcing bar 22
The end that the crab-bolt 21 of lower end contacts with lower anchor slab 8 is provided with nut, and the crab-bolt 21 of reinforcing bar 22 lower end is solid by nut with lower anchor slab 8
Fixed, by upper anchor slab 7 and lower anchor slab 8, earth anchor cage 2 is fixed in generation power foundation of wind power main body 1.
Earth anchor cage 2 includes organizing earth anchor cage cylinder more, the reinforcing bar 22 of the earth anchor cage cylinders of different groups and the radially inner and outer distribution of crab-bolt circle,
The axis of many group crab-bolt circles overlaps, and the crab-bolt 21 being radially correspondingly arranged of reinforcing bar 22 upper end of different groups is by upper anchor slab 7
Being connected with T-flange 9, the crab-bolt 21 being radially correspondingly arranged of reinforcing bar 22 lower end of different groups is connected by lower anchor slab 8.
Earth anchor cage 2 includes two groups of earth anchor cage cylinders.
The nut of the crab-bolt 21 of fixing reinforcing bar 22 lower end is aluminum matter, copper or nylon nut, and nut can be in crab-bolt 21
Need to pull when changing, it is simple to crab-bolt 21 is changed.
Earth anchor cage support 4 is provided with multiple, and each earth anchor cage support 4 is corresponding, often with the crab-bolt 21 of reinforcing bar 22 lower end respectively
Individual earth anchor cage support 4 includes that two groups of pillars and two gripper shoes, two gripper shoes are respectively the first gripper shoe 43 and second and support
Plate 44, two groups of pillars are respectively first group of pillar 41 and second group of pillar 42, and often group pillar includes two pillars, lower anchor slab respectively
The two ends of 8 are respectively symmetrically and are provided with the second through hole 11, and the upper end of two pillars of first group of pillar 41 is each passed through the second through hole 11,
And it is inserted in generation power foundation of wind power main body 1 be connected fixing with generation power foundation of wind power main body 1, two of first group of pillar 41
The lower end of pillar is respectively fixedly disposed on the upper surface of the first gripper shoe 43, the upper end of two pillars of second group of pillar 42 with
The lower surface of the first gripper shoe 43 is connected, and the lower end of two pillars of second group of pillar 42 is connected with the second gripper shoe 44,
Second gripper shoe 44 is connected with the bed course 3 of caveli 6, and earth anchor cage support 4 can preferably support earth anchor cage 2, it is ensured that earth anchor
Cage 2 steady.
The cross section of earth anchor cage 2, cavity 5 and caveli 6 is circle, in earth anchor cage 2, cavity 5 and caveli 6
Dead in line, it is ensured that stablizing of generation power foundation of wind power, the diameter of caveli 6 cross section is straight more than earth anchor cage 2 cross section
Footpath.
The upper surface center position concave downward of generation power foundation of wind power main body 1 forms a circular groove, groove
Being arranged on the port, upper end of cavity 5, the diameter of groove, more than the diameter of cavity 5, is provided with cover plate 12, in control in groove
The cover plate 12 that the upper end of cavity 5 is opened or closed is rotationally connected with generation power foundation of wind power main body 1, and cover plate 12 is arranged on groove
In so that cover plate 12 good seal performance, it is to avoid rainwater enters in cavity 5.
The altitude range of caveli 6 is 0.8 to 1.0 meter, and the altitude range of caveli 6 is suitable for operator and lies low operation,
Change the crab-bolt 21 of corrupted.
When the crab-bolt 21 of earth anchor cage 2 lower end fracture, corrosion occurs or reaches to need fatigue life to change, cover plate can be opened
12, operator enter in caveli 6 from cavity 5, are replaced the operation of crab-bolt 21, and the height of caveli 6 is suitable
Closing operation personnel lie low the height of work, support fixing earth anchor cage 2 with earth anchor cage support 4, it is ensured that wind power generation stepped is the most capable
Run.
These are only presently preferred embodiments of the present invention, not in order to limit the present invention, all in the spirit and principles in the present invention
Within, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (9)
1. the generation power foundation of wind power of a hollow, it is characterised in that: include generation power foundation of wind power main body (1), earth anchor cage
(2), bed course (3) and earth anchor cage support (4)；Described earth anchor cage (2) is vertically embedded in the described wind-force become by concreting and sends out
In electric tower foundation main body (1), described bed course (3) is arranged on described earth anchor cage (2) and described generation power foundation of wind power main body (1)
Lower section, the interior up/down perforation of described generation power foundation of wind power main body (1) be provided with cavity (5), described bed course (3) is at described wind-force
The center position concave downward of power generation column basic body (1) lower surface, forms a depression being easy to people or tool operation
Chamber (6), described cavity (5) is connected with described caveli (6), and described caveli (6) is stretched in the lower end of described earth anchor cage (2)
In, described caveli (6) is provided with earth anchor cage support (4) for supporting described earth anchor cage (2).
The generation power foundation of wind power of a kind of hollow the most according to claim 1, it is characterised in that: described earth anchor cage (2) is wrapped
Including least one set earth anchor cage cylinder, described earth anchor cage cylinder is by the reinforcing bar (22) of multiple cylindrical distributions and is arranged on described reinforcing bar
(22) crab-bolt (21) being circumferentially the distributed composition at two ends, the multiple described crab-bolt at multiple described reinforcing bar (22) two ends often organized
(21) surrounding upper and lower two crab-bolt circles, the upper and lower surface of described generation power foundation of wind power main body (1) is respectively provided with anchoring institute
State upper anchor slab (7) and the lower anchor slab (8) of earth anchor cage (2), described upper anchor slab (7) be arranged over T-flange (9), described T-shaped method
The upper end of blue (9) is connected with tower, and described T-flange (9), described upper anchor slab (7) and described lower anchor slab (8) are respectively equipped with
The first through hole (10) passed for described reinforcing bar (22) and described crab-bolt (21), the described crab-bolt of described reinforcing bar (22) upper end
(21) end contacted with described T-flange (9) is provided with nut, the described crab-bolt (21) of described reinforcing bar (22) upper end and described T
Type flange (9) is fixed by described nut, and the described crab-bolt (21) of described reinforcing bar (22) lower end contacts with described lower anchor slab (8)
End is provided with nut, and the described crab-bolt (21) of described reinforcing bar (22) lower end is fixed by described nut with described lower anchor slab (8).
The generation power foundation of wind power of a kind of hollow the most according to claim 2, it is characterised in that: described earth anchor cage (2) is wrapped
Include the described earth anchor cage cylinder of many groups, the described reinforcing bar (22) of the described earth anchor cage cylinders of different groups and radially inner and outer point of described crab-bolt circle
Cloth, the axis organizing described crab-bolt circle overlap more, described reinforcing bar (22) upper ends of different groups be radially correspondingly arranged described
Crab-bolt (21) is connected with described T-flange (9) by described upper anchor slab (7), the edge of described reinforcing bar (22) lower end of different groups
The described crab-bolt (21) being radially correspondingly arranged is connected by described lower anchor slab (8).
The generation power foundation of wind power of a kind of hollow the most according to claim 2, it is characterised in that: described earth anchor cage (2) is wrapped
Include earth anchor cage cylinder described in two groups.
The generation power foundation of wind power of a kind of hollow the most according to claim 2, it is characterised in that: fixing described reinforcing bar (22)
The nut of the described crab-bolt (21) of lower end is aluminum matter, copper or nylon nut.
The generation power foundation of wind power of a kind of hollow the most according to claim 3, it is characterised in that: described earth anchor cage support
(4) being provided with multiple, each described earth anchor cage support (4) is corresponding with the described crab-bolt (21) of described reinforcing bar (22) lower end respectively,
Each described earth anchor cage support (4) includes that two groups of pillars and two gripper shoes, two gripper shoes are respectively the first gripper shoe (43)
With the second gripper shoe (44), pillar described in two groups is respectively first group of pillar (41) and second group of pillar (42), often described of group
Post includes that two pillars, the two ends of described lower anchor slab (8) are respectively symmetrically respectively and is provided with the second through hole (11), described first group of pillar
(41) upper end of two described pillars is each passed through described second through hole (11), and is inserted into described generation power foundation of wind power master
Body (1) is fixed with described generation power foundation of wind power main body (1) and is connected, two described pillars of described first group of pillar (41)
Lower end is respectively fixedly disposed on the upper surface of described first gripper shoe (43), props up described in two of described second group of pillar (42)
The upper end of post is connected with the lower surface of described first gripper shoe (43), two described pillars of described second group of pillar (42)
Lower end is connected with described second gripper shoe (44), described second gripper shoe (44) and the described bed course (3) of described caveli (6)
It is connected.
The generation power foundation of wind power of a kind of hollow the most according to claim 1, it is characterised in that: described earth anchor cage (2), institute
State the cross section of cavity (5) and described caveli (6) and be circle, described earth anchor cage (2), described cavity (5) and described
The axis of caveli (6) overlaps, and the diameter of described caveli (6) cross section is more than the diameter of described earth anchor cage (2) cross section.
The generation power foundation of wind power of a kind of hollow the most according to claim 1, it is characterised in that: described wind-power generating tower
The upper surface center position concave downward of plinth main body (1) forms a circular groove, and described groove is arranged on described hollow
The port, upper end in chamber (5), the diameter of described groove, more than the diameter of described cavity (5), is provided with cover plate in described groove
(12) the described cover plate (12) the upper end of described cavity (5) opening or close and described generation power foundation of wind power master, are controlled
Body (1) is rotationally connected.
9. according to the generation power foundation of wind power of a kind of hollow described in any one of claim 1 to 8, it is characterised in that: described recessed
The altitude range falling into chamber (6) is 0.8 to 1.0 meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610514575.4A CN106049522A (en) | 2016-07-01 | 2016-07-01 | Hollow wind power generation tower foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610514575.4A CN106049522A (en) | 2016-07-01 | 2016-07-01 | Hollow wind power generation tower foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106049522A true CN106049522A (en) | 2016-10-26 |
Family
ID=57200836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610514575.4A Pending CN106049522A (en) | 2016-07-01 | 2016-07-01 | Hollow wind power generation tower foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106049522A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108755736A (en) * | 2018-07-12 | 2018-11-06 | 中国大唐集团科技工程有限公司 | A kind of precast prestressed board-like generation power foundation of wind power |
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| CN103821676A (en) * | 2014-02-12 | 2014-05-28 | 北京金风科创风电设备有限公司 | Tower foundation of wind generating set |
| CN203783828U (en) * | 2014-04-18 | 2014-08-20 | 北京金风科创风电设备有限公司 | Tower foundation of wind generating set |
| CN203925895U (en) * | 2014-07-07 | 2014-11-05 | 闵怡红 | For wind power generation stepped crab-bolt Changable type basis |
| CN105002924A (en) * | 2015-08-03 | 2015-10-28 | 瑞风能源（武汉）工程技术有限公司 | Hollow ground anchor cage base |
| CN105297766A (en) * | 2015-11-19 | 2016-02-03 | 中国能源建设集团广西电力设计研究院有限公司 | Replaceable prestress anchor bolt draught fan foundation |
| CN205776319U (en) * | 2016-07-01 | 2016-12-07 | 瑞风能源（武汉）工程技术有限公司 | A kind of generation power foundation of wind power of hollow |
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2016
- 2016-07-01 CN CN201610514575.4A patent/CN106049522A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063509A (en) * | 2006-04-30 | 2007-10-31 | 通用电气公司 | Tower adapter, method of producing a tower foundation and tower foundation |
| US20070251187A1 (en) * | 2006-04-30 | 2007-11-01 | Joris Schiffer | Tower adapter, method of producing a tower foundation and tower foundation |
| CN103821676A (en) * | 2014-02-12 | 2014-05-28 | 北京金风科创风电设备有限公司 | Tower foundation of wind generating set |
| CN203783828U (en) * | 2014-04-18 | 2014-08-20 | 北京金风科创风电设备有限公司 | Tower foundation of wind generating set |
| CN203925895U (en) * | 2014-07-07 | 2014-11-05 | 闵怡红 | For wind power generation stepped crab-bolt Changable type basis |
| CN105002924A (en) * | 2015-08-03 | 2015-10-28 | 瑞风能源（武汉）工程技术有限公司 | Hollow ground anchor cage base |
| CN105297766A (en) * | 2015-11-19 | 2016-02-03 | 中国能源建设集团广西电力设计研究院有限公司 | Replaceable prestress anchor bolt draught fan foundation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108755736A (en) * | 2018-07-12 | 2018-11-06 | 中国大唐集团科技工程有限公司 | A kind of precast prestressed board-like generation power foundation of wind power |
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Application publication date: 20161026 |
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