CN112411605A - Reinforcement reinforcing method and system for foundation anchor bolt of power transmission tower - Google Patents
Reinforcement reinforcing method and system for foundation anchor bolt of power transmission tower Download PDFInfo
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- CN112411605A CN112411605A CN202011370853.6A CN202011370853A CN112411605A CN 112411605 A CN112411605 A CN 112411605A CN 202011370853 A CN202011370853 A CN 202011370853A CN 112411605 A CN112411605 A CN 112411605A
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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
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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
- E02D27/50—Anchored foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
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Abstract
The invention discloses a reinforcement placing and reinforcing method and system for a power transmission tower foundation anchor bolt, wherein the reinforcing system comprises a concrete pile foundation, a plurality of anchor bolts are axially arranged in the center of the concrete pile foundation and form an anchor bolt group, the reinforcing system also comprises a plurality of L-shaped reinforcing steel bars, the plurality of L-shaped reinforcing steel bars are uniformly arranged in an annular direction by taking the anchor bolt group as the center, each L-shaped reinforcing steel bar comprises a reinforcing steel bar horizontal section and a reinforcing steel bar vertical section which are perpendicular to each other, the downward extension of each reinforcing steel bar vertical section is inserted into a hole channel in the concrete pile foundation, the hole channel is filled with epoxy resin glue, the downward extension of each reinforcing steel bar vertical section exceeds the concrete cone surface by a certain length, the exceeding part is calculated anchoring length, and the reinforcing steel bar horizontal section extends outwards along the radial direction of the concrete pile foundation and has a. The method solves the problem that the existing method for repairing the cracks cannot fundamentally inhibit the cracks, and has the advantage of simple construction operation.
Description
Technical Field
The invention relates to the technical field of power transmission tower foundations, in particular to a reinforcement method and a reinforcement system for anchor bolts of a power transmission tower foundation.
Background
The transmission line is an important component of a power grid, the foundation engineering of the transmission line tower belongs to the hidden engineering of transmission line construction, the design, construction, quality detection and other aspects are more complex than the upper structure, a plurality of hidden dangers exist in the operation process, and once cracking occurs, serious safety accidents and economic losses can be brought.
The power transmission line crossing the mountain area is high in altitude, and due to the fact that the surrounding terrain conditions are complex, the power transmission pole tower bears wind load and ice coating load, the line system of the power transmission pole tower has the effect of wind vibration for a long time, and the power transmission pole tower is particularly serious under the condition of light ice coating. Under the long-term action of vibration load, the transmission tower foundation bears the alternating ice wind load action in winter, so that the tower foundation in a part of typical areas is cracked and damaged, and the safe operation of the transmission line is directly threatened.
The concrete pile foundation is adopted for the power transmission tower foundation, the structural depth is large, and the concrete pile foundation is located underground, so that the concrete pile foundation is difficult to reinforce and repair if cracking occurs. The cracking problem of concrete is not negligible, and if effective prevention and control measures are not taken in time, further expansion of cracks is easily caused, even the cracks exceed the allowable range, and serious consequences are caused.
And a method of excavating concrete and arranging reinforcing steel bars is adopted for partial construction and reinforcement, so that construction operation is complicated and consumption is high. The current common method is to increase the pile diameter and repair the crack. The method for expanding the pile diameter needs a large number of construction steps and consumes a large number of manpower and material resources; the method for repairing cracks only aims at tiny cracks, the generation of cracks cannot be fundamentally inhibited when the cracks are slightly large, and new cracks are easy to generate on the interfaces of new and old concrete
Disclosure of Invention
The invention aims to provide a reinforcement method and a reinforcement system for foundation anchor bolts of a power transmission tower, which solve the problem that the existing crack repairing method cannot fundamentally inhibit cracks and have the advantage of simple construction operation.
The invention is realized by the following technical scheme:
the utility model provides a power transmission tower foundation anchor bolt put muscle reinforcerment system, includes the concrete pile foundation, the center of concrete pile foundation is provided with a plurality of stocks in the axial, and a plurality of stocks constitute the anchor bolt crowd, still includes a plurality of L shape reinforcing bars, and a plurality of L shape reinforcing bars use anchor bolt crowd to evenly arrange as central hoop, L shape reinforcing bar includes mutually perpendicular's reinforcing bar horizontal segment and the vertical section of reinforcing bar, and the downwardly extending of the vertical section of reinforcing bar inserts in the pore of concrete pile foundation, the pore intussuseption is filled with epoxy glue, the vertical section downwardly extending of reinforcing bar surpasss the concrete cone certain length of fracture face, surpasss the part and is calculating anchor length, the reinforcing bar horizontal segment radially outwards extends along the concrete pile foundation, and has certain anchor length.
The anchor bolt is reinforced by the L-shaped steel bars and is circularly arranged by taking the center of the anchor bolt group as the center; the reinforcing bar stretches to the deep layer of concrete pile foundation, can effectively restrain the horizontal development of crack, vertically has certain anchor length, can guarantee that L shape reinforcing bar can not pulled out when the concrete pile foundation is pulled. The embedded steel bar glue adopts epoxy resin glue, can be cured at normal temperature, has small shrinkage in the curing process, can not generate larger stress, has higher strength after curing, strong capabilities of durability, toughness and the like, and can better transfer force between the steel bar and the concrete. The whole construction process is very simple, the operation is convenient, the cost consumption is low, a large amount of soil body excavation can not occur, and a large amount of large-scale mechanical equipment is not required to be used. The method solves the problem that the existing method for repairing the cracks can not fundamentally inhibit the cracks, and has the advantages of simple construction operation, poor reinforcing effect and uniform force transmission between the steel bars and the concrete.
Furthermore, the L-shaped steel bars are uniformly arranged in two circles in the circumferential direction by taking the anchor bolt group as a center, and the horizontal sections of the two circles of steel bars extend outwards in the same direction.
Further, when the concrete pile foundation has an annular crack on the upper surface of the pile foundation, the concrete on the upper portion of the concrete pile foundation is dug, then the concrete pile foundation is drilled with a hole along the axial direction to form a hole channel, then the vertical section of the steel bar is arranged in the hole channel, the top of the concrete pile foundation is backfilled to form backfilled concrete, and the horizontal section of the steel bar is embedded into the backfilled concrete.
Further, the ends of the horizontal sections of the rebar form a hook structure.
Furthermore, the epoxy resin glue is modified epoxy resin glue.
Further, the bottom of stock is provided with the anchor slab, the through-hole on the backing plate of crab-bolt crowd is passed at the top of stock, the top of stock is passed through the nut and is screwed up.
A reinforcing method of a reinforcing system for reinforcing a foundation anchor bolt of a power transmission tower by using ribs comprises the following steps:
s1, according to the size of the annular crack on the side face of the pile foundation and in combination with the specification of the anchor bolt, calculating the number of the L-shaped steel bars, selecting the types of the L-shaped steel bars, and calculating the lengths of the horizontal section and the vertical section of the steel bars and the depth of the pore channel;
s2, vertically drilling a plurality of holes downwards in the top of the concrete pile foundation, wherein the plurality of holes are annularly and uniformly distributed by taking the anchor bolt group as a center;
s3, injecting the prepared epoxy resin glue into the pore channel;
s4, inserting the vertical section of the steel bar into the pore canal to enable the bottom of the vertical section of the steel bar to extend into the bottom of the pore canal and enable the horizontal section of the steel bar to extend outwards along the radial direction of the concrete pile foundation;
and S5, waiting for the epoxy resin glue to be cured within a specified time.
Further, when the annular cracks on the upper surface of the pile foundation and the annular cracks on the side surface of the pile foundation occur on the concrete pile foundation, the construction method carries out the following steps before punching:
excavating upper surface concrete of the concrete pile foundation according to the depth of the upper surface crack until the concrete is completely excavated, and vertically punching a plurality of pore passages downwards on the plane of the excavated pile foundation;
and after the epoxy resin adhesive is cured, backfilling the excavated pile foundation plane to form backfilled concrete.
Further, in step S4, when the L-shaped reinforcing bars are inserted, the bar is rotated left and right during the insertion process until the vertical section of the reinforcing bars reaches the bottom of the hole.
Furthermore, the L-shaped steel bars are uniformly arranged in two circles in the circumferential direction by taking the anchor bolt group as a center, and the horizontal sections of the two circles of steel bars extend outwards in the same direction.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the anchor bolt is reinforced by the L-shaped steel bars and is circularly arranged by taking the center of the anchor bolt group as the center; the reinforcing bar stretches to the deep layer of concrete pile foundation, can effectively restrain the horizontal development of crack, vertically has certain anchor length, can guarantee that L shape reinforcing bar can not pulled out when the concrete pile foundation is pulled. The embedded steel bar glue adopts epoxy resin glue, can be cured at normal temperature, has small shrinkage in the curing process, can not generate larger stress, has higher strength after curing, strong capabilities of durability, toughness and the like, and can better transfer force between the steel bar and the concrete.
2. The invention has the advantages of simple whole construction process, convenient operation, low cost, no excavation of a large amount of soil bodies and no need of using a large amount of large-scale mechanical equipment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is an isometric view of a concrete pile foundation structure of a power transmission tower;
FIG. 2 is a cross-sectional view of a reinforcement-placing reinforcing structure of a concrete pile foundation anchor bolt of a power transmission tower;
FIG. 3 is a cross-sectional view of a duct during reinforcing of a concrete pile foundation of a power transmission tower by placing ribs;
fig. 4 is a plan view of a reinforcement structure of a concrete pile foundation anchor bolt of a power transmission tower.
Reference numbers and corresponding part names in the drawings:
1-anchor rod, 2-screw cap, 3-anchor plate, 4-anchor bolt group backing plate, 5-backfill concrete, 6-steel bar horizontal section, 7-steel bar vertical section, 8-concrete cone fracture surface, 9-concrete pile foundation, 10-pore channel, 11-epoxy resin adhesive, 12-pile foundation upper surface annular crack and 13-pile foundation side annular crack.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1:
as shown in fig. 1-4, a reinforcing system for reinforcing a steel bar of a power transmission tower foundation anchor bolt comprises a concrete pile foundation 9, wherein a plurality of anchor rods 1 are axially arranged at the center of the concrete pile foundation 9, the anchor rods 1 form an anchor bolt group, an anchor plate 3 is arranged at the bottom of each anchor rod 1, a through hole in an anchor bolt group backing plate 4 is penetrated through the top of each anchor rod 1, the top of each anchor rod 1 is screwed through a nut 2, the reinforcing system further comprises a plurality of L-shaped steel bars, the L-shaped steel bars are annularly and uniformly arranged in two circles by taking the anchor bolt group as a center, each L-shaped steel bar comprises a steel bar horizontal section 6 and a steel bar vertical section 7 which are perpendicular to each other, the downward extension of each steel bar vertical section 7 is inserted into a hole 10 in the concrete pile foundation 9, the hole 10 is filled with epoxy resin 11, the steel bar vertical section 7 extends downward to exceed a concrete cone fracture surface 8 by a certain length, and, the horizontal reinforcing steel bar section 6 extends outwards along the radial direction of the concrete pile foundation 9 and has a certain anchoring length; the outward extending directions of the two circles of horizontal sections 6 of the reinforcing steel bars are the same; the tip of reinforcing bar horizontal segment 6 forms the crotch structure, epoxy glue 11 adopts modified epoxy glue.
The construction method is suitable for the concrete pile foundation 9 with the annular cracks 13 on the side faces of the pile foundation, and comprises the following steps:
s1, according to the size of the annular crack 13 on the side face of the pile foundation and in combination with the specification of the anchor bolt, calculating the number of L-shaped reinforcing steel bars, selecting the types of the L-shaped reinforcing steel bars, and calculating the lengths of the horizontal section 6 and the vertical section 7 of the reinforcing steel bars and the depth of the hole channel 10;
s2, vertically and downwards punching holes in the top of the concrete pile foundation 9 to form a plurality of hole channels 10, wherein the hole channels 10 are annularly and uniformly distributed by taking an anchor bolt group as a center, residues left in the drilled holes are sucked out by tools such as an air compressor and the like after the drilling is finished, then dust and the like on the inner wall of each hole channel 10 are brushed off by an emptying brush, and the dust and the like are sucked out by the air compressor and the like;
s3, inserting the prepared epoxy resin glue 11 into the bottom of the hole channel 10 by using a mixer, slowly injecting the epoxy resin glue 11 into the hole channel 10 or directly pouring the epoxy resin glue 11 into the hole channel 10, wherein the epoxy resin glue 11 is sufficient and sufficient to meet the requirement that the epoxy resin glue 11 at the hole channel opening can overflow after the vertical section 7 of the reinforcing steel bar is inserted into the bottom of the hole channel 10;
s4, inserting the vertical reinforcing steel bar section 7 into the duct 10 to enable the bottom of the vertical reinforcing steel bar section 7 to extend into the bottom of the duct 10, inserting the vertical reinforcing steel bar section 7 while rotating left and right to ensure good contact between the vertical reinforcing steel bar section and the duct 10 until the vertical reinforcing steel bar section 7 reaches the bottom of the duct 10, and enabling the horizontal reinforcing steel bar section 6 to extend outwards along the concrete pile foundation 9 in the radial direction;
and S5, waiting for the epoxy resin adhesive 11 to be cured within a specified time, wherein the reinforcing steel bars cannot be disturbed in the curing process.
By adopting the reinforcing system and method provided by the embodiment, after the power transmission tower foundation is cracked, when the pile foundation after being reinforced is under tension, the cracking of concrete can be inhibited by the vertical steel bars, so that the cracking is delayed to a greater extent, and the bearing capacity is improved. The L-shaped steel bar has a certain anchoring length in the longitudinal direction, so that the L-shaped steel bar can be prevented from being pulled up when the concrete pile foundation is pulled. The embedded steel bar glue adopts epoxy resin glue, can be cured at normal temperature, is reduced in shrinkage in the curing process, does not generate larger stress, has higher strength after curing, has strong performances such as durability, toughness and the like, and can better transfer force between the L-shaped steel bar and the concrete. The whole construction process is very simple, the operation is convenient, the cost consumption is low, a large amount of soil body excavation can not occur, and a large amount of large-scale mechanical equipment is not required to be used.
Example 2:
as shown in fig. 1-4, in this embodiment, based on embodiment 1, when there is an annular crack 12 on the upper surface of the concrete pile foundation 9, the concrete on the upper portion of the concrete pile foundation 9 is removed, then a hole 10 is drilled in the concrete pile foundation 9 along the axial direction, then the vertical section 7 of the steel bar is arranged in the hole 10, the top of the concrete pile foundation 9 is backfilled to form a backfilled concrete 5, and the horizontal section 6 of the steel bar is embedded in the backfilled concrete 5.
The construction method is suitable for the concrete pile foundation 9 when the annular cracks 12 on the upper surface of the pile foundation and the annular cracks 13 on the side surface of the pile foundation occur, and comprises the following steps:
s1, excavating the upper surface concrete of the concrete pile foundation 9 according to the depth of the upper surface cracks 12 to complete concrete;
s2, according to the size of the annular crack 13 on the side face of the pile foundation and in combination with the specification of the anchor bolt, calculating the number of L-shaped reinforcing steel bars, selecting the types of the L-shaped reinforcing steel bars, and calculating the lengths of the horizontal section 6 and the vertical section 7 of the reinforcing steel bars and the depth of the hole channel 10;
s3, vertically and downwards punching holes in the top of the concrete pile foundation 9 to form a plurality of hole channels 10, wherein the hole channels 10 are annularly and uniformly distributed by taking an anchor bolt group as a center, residues left in the drilled holes are sucked out by tools such as an air compressor and the like after the drilling is finished, then dust and the like on the inner wall of each hole channel 10 are brushed off by an emptying brush, and the dust and the like are sucked out by the air compressor and the like;
s4, inserting the prepared epoxy resin glue 11 into the bottom of the hole channel 10 by using a mixer, slowly injecting the epoxy resin glue 11 into the hole channel 10 or directly pouring the epoxy resin glue 11 into the hole channel 10, wherein the epoxy resin glue 11 is sufficient and sufficient to meet the requirement that the epoxy resin glue 11 at the hole channel opening can overflow after the vertical section 7 of the reinforcing steel bar is inserted into the bottom of the hole channel 10;
s5, inserting the vertical reinforcing steel bar section 7 into the duct 10 to enable the bottom of the vertical reinforcing steel bar section 7 to extend into the bottom of the duct 10, inserting the vertical reinforcing steel bar section 7 while rotating left and right to ensure good contact between the vertical reinforcing steel bar section and the duct 10 until the vertical reinforcing steel bar section 7 reaches the bottom of the duct 10, and enabling the horizontal reinforcing steel bar section 6 to extend outwards along the concrete pile foundation 9 in the radial direction;
and S6, waiting for the epoxy resin adhesive 11 to be cured within a specified time, wherein the reinforcing steel bars cannot be disturbed in the curing process.
And S7, after the epoxy resin adhesive 11 is cured, backfilling the excavated pile foundation plane to form backfill concrete 5.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A reinforcing system for foundation anchor bolts of a power transmission tower comprises a concrete pile foundation (9), a plurality of anchor rods (1) are axially arranged at the center of the concrete pile foundation (9), the anchor rods (1) form an anchor rod group, it is characterized by also comprising a plurality of L-shaped reinforcing steel bars which are uniformly arranged in an annular direction by taking the anchor bolt group as a center, the L-shaped steel bar comprises a horizontal steel bar section (6) and a vertical steel bar section (7) which are vertical to each other, the vertical steel bar section (7) extends downwards and is inserted into a pore passage (10) in the concrete pile foundation (9), the pore canal (10) is filled with epoxy resin glue (11), the vertical section (7) of the steel bar extends downwards to exceed the fracture surface (8) of the concrete cone for a certain length, the horizontal section (6) of the steel bar extends outwards along the radial direction of the concrete pile foundation (9) and has a certain anchoring length.
2. The reinforcing system for the foundation anchor bolt of the power transmission tower according to claim 1, wherein the plurality of L-shaped reinforcing steel bars are circumferentially and uniformly arranged in two circles by taking the anchor bolt group as a center, and the horizontal sections (6) of the two circles of reinforcing steel bars extend outwards in the same direction.
3. The reinforcing system for the foundation anchor bolt of the power transmission tower according to claim 1, wherein when the concrete pile foundation (9) has the annular crack (12) on the upper surface of the pile foundation, the concrete on the upper part of the concrete pile foundation (9) is excavated, then the hole (10) is formed in the concrete pile foundation (9) along the axial direction, then the vertical section (7) of the steel bar is arranged in the hole (10), the top of the concrete pile foundation (9) is backfilled to form the backfilled concrete (5), and the horizontal section (6) of the steel bar is embedded into the backfilled concrete (5).
4. The reinforcement system for foundation bolts of power transmission towers according to claim 1, wherein the ends of the horizontal section (6) of the reinforcement form a hook structure.
5. The reinforcement system for the foundation anchor bolt of the power transmission tower as claimed in claim 1, wherein the epoxy resin adhesive (11) is a modified epoxy resin adhesive.
6. The reinforcement placing and reinforcing system for the anchor bolt of the power transmission tower foundation according to claim 1, wherein the bottom of the anchor bolt (1) is provided with an anchor plate (3), the top of the anchor bolt (1) passes through a through hole in the anchor bolt group backing plate (4), and the top of the anchor bolt (1) is screwed through a nut (2).
7. The reinforcement method of the reinforcement system for the anchor bolts of the power transmission tower foundation according to any one of claims 1 to 6, wherein when the annular cracks (13) occur on the side surfaces of the concrete pile foundation (9), the construction method comprises the following steps:
s1, according to the size of the annular crack (13) on the side face of the pile foundation and in combination with the specification of the anchor bolt, calculating the number of the L-shaped reinforcing steel bars, selecting the model of the L-shaped reinforcing steel bars, and calculating the lengths of the horizontal section (6) and the vertical section (7) of the reinforcing steel bars and the depth of the pore channel (10);
s2, vertically drilling downwards at the top of the concrete pile foundation (9) to form a plurality of pore channels (10), wherein the pore channels (10) are annularly and uniformly arranged by taking an anchor bolt group as a center;
s3, injecting the prepared epoxy resin glue (11) into the pore canal (10);
s4, inserting the vertical reinforcing steel bar sections (7) into the duct (10) to enable the bottoms of the vertical reinforcing steel bar sections (7) to extend into the bottom of the duct (10) and enable the horizontal reinforcing steel bar sections (6) to extend outwards in the radial direction along the concrete pile foundation (9);
and S5, waiting for the epoxy resin adhesive (11) to be cured within a preset time.
8. The reinforcement method of the reinforcement system for the anchor bolts of the power transmission tower foundation according to claim 7, wherein when the annular cracks (12) on the upper surface of the concrete pile foundation (9) and the annular cracks (13) on the side surface of the concrete pile foundation are generated, the construction method comprises the following steps before the hole is punched:
excavating upper surface concrete of the concrete pile foundation (9) according to the depth of the upper surface cracks (12) until the concrete is completely excavated, and then vertically downwards drilling holes (10) on the plane of the excavated pile foundation;
and after the epoxy resin glue (11) is cured, backfilling on the excavated pile foundation plane to form backfill concrete (5).
9. The reinforcing method of the reinforcement system for the anchor bolt of the transmission tower foundation according to claim 7, wherein the L-shaped reinforcing bars are inserted and rotated left and right during the insertion until the vertical section (7) of the reinforcing bars reaches the bottom of the hole (10) in step S4.
10. The reinforcing method of the reinforcing system for the reinforcement of the anchor bolt of the transmission tower foundation according to claim 7, wherein the L-shaped steel bars are uniformly arranged in two circles around the anchor bolt group, and the horizontal sections (6) of the two circles of steel bars extend outwards in the same direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011370853.6A CN112411605A (en) | 2020-11-30 | 2020-11-30 | Reinforcement reinforcing method and system for foundation anchor bolt of power transmission tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011370853.6A CN112411605A (en) | 2020-11-30 | 2020-11-30 | Reinforcement reinforcing method and system for foundation anchor bolt of power transmission tower |
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| CN112411605A true CN112411605A (en) | 2021-02-26 |
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| CN202011370853.6A Pending CN112411605A (en) | 2020-11-30 | 2020-11-30 | Reinforcement reinforcing method and system for foundation anchor bolt of power transmission tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115573376A (en) * | 2022-08-12 | 2023-01-06 | 中国电力工程顾问集团西南电力设计院有限公司 | Treatment method and reinforcement device for circular transmission tower foundation cracking |
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| US20150376858A1 (en) * | 2014-06-25 | 2015-12-31 | Powerchina Huadong Engineering Corporation Limited | Wind Turbine Generator Foundation with Pressure-Dispersive High Strength Pre-stressed Anchors |
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| CN115573376B (en) * | 2022-08-12 | 2024-05-24 | 中国电力工程顾问集团西南电力设计院有限公司 | Method for treating cracking of foundation of circular transmission tower |
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