CN110629784A - Fan foundation prestressed concrete additional strengthening - Google Patents
Fan foundation prestressed concrete additional strengthening Download PDFInfo
- Publication number
- CN110629784A CN110629784A CN201910910418.9A CN201910910418A CN110629784A CN 110629784 A CN110629784 A CN 110629784A CN 201910910418 A CN201910910418 A CN 201910910418A CN 110629784 A CN110629784 A CN 110629784A
- Authority
- CN
- China
- Prior art keywords
- layer
- foundation
- annular
- concrete
- ring
- 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.)
- Pending
Links
- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 19
- 238000005728 strengthening Methods 0.000 title claims description 5
- 239000004567 concrete Substances 0.000 claims abstract description 54
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 35
- 230000002787 reinforcement Effects 0.000 claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 17
- 239000010410 layer Substances 0.000 claims description 123
- 238000007789 sealing Methods 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 229920001971 elastomer Polymers 0.000 claims description 13
- 239000004746 geotextile Substances 0.000 claims description 12
- 229920002635 polyurethane Polymers 0.000 claims description 12
- 239000004814 polyurethane Substances 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000011440 grout Substances 0.000 claims description 8
- 239000012945 sealing adhesive Substances 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 239000011241 protective layer Substances 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 2
- 241001330002 Bambuseae Species 0.000 claims description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 2
- 239000011425 bamboo Substances 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 claims description 2
- 238000009500 colour coating Methods 0.000 claims description 2
- 239000004588 polyurethane sealant Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 5
- 238000004078 waterproofing Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 241000372132 Hydrometridae Species 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000011218 segmentation Effects 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to a fan foundation prestressed concrete reinforcing structure, which is used for supporting a tower drum of a wind generating set and is characterized in that: the wind turbine tower comprises a foundation ring used for being connected with a wind turbine tower, a concrete foundation layer arranged at the bottom and the periphery of the foundation ring, and a prestressed reinforced concrete layer tightly attached to the upper surface of the concrete foundation layer and surrounding the periphery of the foundation ring, wherein at least one grouting reinforcement ring surrounding the periphery of the foundation ring and used for performing prestressed tensioning is embedded in the prestressed reinforced concrete layer, and the grouting reinforcement ring is provided with an annular grouting cavity arranged along the extending direction of the grouting reinforcement ring. The invention has the advantages that: post-cast reinforced concrete is arranged above the concrete foundation layer, and concrete is poured into the annular grouting cavity to expand the whole fan reinforcing ring to realize prestress post-tensioning and realize the structural reinforcement of the concrete foundation.
Description
Technical Field
The invention relates to a wind power generation foundation, in particular to a prestressed concrete reinforcing structure of a fan foundation.
Background
Wind energy is increasingly gaining attention as a clean renewable energy source in all countries of the world. With the development of global economy, the wind energy market is also rapidly developing. The wind energy reserve of China is very large and wide in distribution, and the land-only wind energy reserve is about 2.53 hundred million kilowatts. In recent years, the wind power industry of China is rapidly developed, and the land wind turbine infrastructure needs to be vigorous.
The foundation ring type and foundation anchor bolt type wind turbine foundation introduced from abroad is widely applied to onshore wind power industry, the foundation ring or foundation anchor bolt is fixed on the ground through a concrete foundation, and a tower cylinder of a wind turbine power generation system is fixedly connected with upper flanges of the foundation ring and the foundation anchor bolt. Under the action of bearing long-term reciprocating fan load, the bottom flanges of the foundation ring and the foundation anchor bolt and the peripheral concrete generate relative dislocation to cause concrete cracks, particularly at the junction of the outer wall of the foundation ring and the concrete, the fan foundation is subjected to water stop failure to cause water infiltration, under the influence of continuous vibration and swinging of the foundation ring, the concrete is continuously ground and is fused with the infiltrated water to be extruded out from the cracks, the local concrete at the bottom flange of the foundation ring is hollowed to form a cavity, and finally severe shaking of the fan tower is caused; due to the influence of various factors such as cracks, cavities or working environments, construction quality and the like, the strength of the original concrete foundation cannot meet the design requirements, and the safe and stable operation of the wind turbine generator is seriously threatened.
Disclosure of Invention
The invention aims to provide a fan foundation prestressed concrete reinforcing structure capable of improving the strength of a fan foundation structure.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a fan basis prestressed concrete additional strengthening for support wind generating set's tower section of thick bamboo, its innovation point lies in: comprises that
The foundation ring is used for being connected with the fan tower;
the concrete foundation layer is arranged at the bottom and the periphery of the foundation ring;
the grouting reinforcement ring is provided with an annular grouting cavity body arranged along the extension direction of the grouting reinforcement ring, the grouting reinforcement ring is provided with a grouting pipe and a grout return pipe which are communicated with the annular grouting cavity body, and the pipe orifices of the grouting pipe and the grout return pipe extend out of the upper surface or the side surface of the prestressed reinforced concrete layer.
Further, the innovation points are as follows: the grouting reinforcement ring is formed by sequentially connecting a plurality of arc sections end to end through flanges, a flow channel which is communicated along the extending direction of the arc sections is arranged in the center of the arc sections, and an annular grouting cavity is formed after the arc sections are sequentially connected.
Further, the innovation points are as follows: the cross section of the annular grouting cavity is formed by connecting a pair of vertical and symmetrically arranged transition sections between an upper arc section and a lower arc section.
Further, the innovation points are as follows: the cross section of the annular grouting cavity is rectangular.
Further, the innovation points are as follows: the upper surface of the concrete foundation layer is also provided with a plurality of bar planting holes which are vertical and do not penetrate through the concrete foundation layer; the prestressed reinforced concrete layer is internally provided with a steel bar framework, the steel bar framework is vertically connected with embedded bars, and the lower ends of the embedded bars vertically extend downwards into the embedded bar holes.
Further, the innovation points are as follows: the upper surface of the concrete foundation layer is coaxially provided with a plurality of annular grooves taking the axis of the foundation ring as the circle center.
Further, the innovation points are as follows: and an elastic water stop structure is arranged between the outer circumferential surface of the foundation ring and the concrete foundation layer and between the outer circumferential surface of the foundation ring and the prestressed reinforced concrete layer.
Further, the innovation points are as follows: the elastic water stopping structure is as follows:
a first annular sealing groove surrounding the outer wall of the foundation ring is arranged at the position, close to the outer wall of the foundation ring, of the upper surface of the concrete foundation layer, a first sealing strip is arranged in the groove of the first annular sealing groove, and a first polyurethane sealing glue layer is filled at the top of the first annular sealing groove;
the junction of the outer wall of the foundation ring and the concrete foundation layer and the prestressed reinforced concrete layer is an annular boundary, the area between the outer wall of the foundation ring and the prestressed reinforced concrete layer above the annular boundary is defined as a vertical annular waterproof area in the vertical direction by taking the annular boundary as a reference, and the area between the concrete foundation layer and the prestressed reinforced concrete layer outside the annular boundary is positioned as a horizontal annular waterproof area in the horizontal direction;
a circle of rubber pipe is arranged at the annular boundary and clings to the first polyurethane sealing adhesive layer, and a third polyurethane sealing adhesive layer is filled in gaps among the rubber pipe, the outer wall of the foundation ring, the concrete foundation layer and the first polyurethane sealing adhesive layer;
the waterproof material layer extending to the horizontal annular waterproof area is arranged in the vertical annular waterproof area and comprises a waterproof coating layer, a first waterproof roll material layer, a second waterproof roll material layer and a light-color coating protective layer which are sequentially arranged in the vertical annular waterproof area from inside to outside;
and a second annular sealing groove surrounding the outer wall of the foundation ring is arranged at the position, close to the outer wall of the foundation ring, of the upper surface of the prestressed reinforced concrete layer, a second sealing strip is arranged in the groove of the second annular sealing groove, and a second polyurethane sealing adhesive layer is filled at the top of the second annular sealing groove.
Further, the innovation points are as follows: a first non-woven geotextile layer is arranged between the waterproof material layer and the outer wall of the foundation ring, and the lower part of the first non-woven geotextile layer extends to the horizontal annular waterproof area; and a second non-woven geotextile layer is arranged between the waterproof material layer and the post-cast concrete layer.
The invention has the advantages that:
the post-cast reinforced concrete is arranged above the wind power concrete foundation layer, the grouting reinforcement ring is arranged in the heightened reinforced concrete, after the post-cast reinforced concrete layer meets the strength requirement, the whole grouting reinforcement ring is expanded through high-pressure grouting in the annular grouting cavity to realize prestress post-tensioning, the structure of the concrete foundation is reinforced, the wind power foundation is ensured to meet the strength requirement, and the post-cast reinforced concrete is widely applied to wind power foundation reinforcement adopting the foundation ring. And set up the waterproof layer that the multichannel is constituteed by the sealing strip, sealed glue, waterproof material layer etc. between foundation ring and concrete foundation layer, prestressed reinforcement concrete layer, and simultaneously, adopt flexonics's mode to set up, make waterproof structure and foundation ring that blocks water, concrete foundation layer, displacement to a certain extent can take place between the prestressed reinforcement concrete layer, it tears the waterproof material layer and causes the stagnant water measure inefficacy to avoid foundation ring vibration, and then promote wind-powered electricity generation basic structural stability, reduce the potential safety hazard, reduce the maintenance frequency, practice thrift wind-powered electricity generation running cost.
The cross section of the annular grouting cavity is formed by connecting a pair of transition sections between the upper semicircle and the lower semicircle, so that the fan reinforcing ring not only has better bearing capacity, but also can realize expansion tensioning more smoothly. And hollow annular body passes through flange joint by a plurality of arc segmentation and constitutes, can assemble at the annular formula basis job site of basis more fast in the wind-powered electricity generation basis strengthening process of being convenient for, improves the efficiency of construction, and the transportation is convenient.
Drawings
FIG. 1 is a plan view of a wind turbine infrastructure of the present invention.
FIG. 2 is an elevational view of a wind turbine infrastructure of the present invention.
FIG. 3 is a schematic diagram of reinforcement of the prestressed concrete reinforcing structure of the wind turbine foundation.
FIG. 4 is a cross-sectional view of the annular trench of the present invention.
Fig. 5 is a schematic view of a grouting reinforcement ring structure in the invention.
Fig. 6 is a schematic view of the arc-shaped segment structure of the present invention.
FIG. 7 is a schematic cross-sectional view of an arcuate segment at a grout pipe in accordance with the present invention.
Fig. 8 is a schematic view of the elastic water stop structure of the fan foundation in the invention.
Fig. 9 is a schematic view of the structure of the rubber tube in the elastic water stop structure of the present invention.
Detailed Description
The invention relates to a prestressed concrete reinforcing structure of a wind turbine foundation, which is used for supporting a tower of a wind turbine generator system and comprises a prestressed concrete reinforcing structure body and a wind turbine generator system supporting structure, wherein the prestressed concrete reinforcing structure body is shown in figures 1, 2 and 3
The foundation ring 1 is used for being connected with a fan tower;
the concrete foundation layer 2 is arranged at the bottom and the periphery of the foundation ring 1;
the prestressed reinforced concrete layer 3 is tightly attached to the upper surface of the concrete foundation layer 2 and surrounds the periphery of the foundation ring 1, a steel reinforcement framework 6 and at least one grouting reinforcement ring 5 which surrounds the periphery of the foundation ring 1 and is used for performing prestressed tensioning are embedded in the prestressed reinforced concrete layer 3.
The upper surface of the concrete foundation layer 2 is roughened so as to increase the adhesion with the post-cast prestressed reinforced concrete layer 3, and a plurality of annular grooves 22 which take the axis of the foundation ring 1 as the center of a circle are coaxially arranged on the upper surface of the concrete foundation layer, as shown in fig. 4, the bottoms of the annular grooves 22 are inclined downwards, and the bottoms of the grooves are also roughened to form irregular wave-shaped cross sections, which needs to be noted that: the groove bottom of the annular groove 22 is gradually inclined downward in the radial direction of the base ring from the center of the base ring outward. The upper surface of the concrete foundation layer 2 is also provided with a plurality of bar planting holes 21 which are vertical and do not penetrate through the concrete foundation layer 2. The steel bar framework 6 is vertically connected with a steel bar planting 61, and the lower end of the steel bar planting 61 vertically extends downwards into the steel bar planting hole 21.
As shown in fig. 5 and 6, the grouting reinforcement ring 5 has an annular grouting cavity arranged along its own extending direction, and is specifically formed by sequentially connecting a plurality of arc-shaped segments 51 end to end through flanges 52, the center of the arc-shaped segment 51 has a flow channel 53 running through along its own extending direction, and the arc-shaped segments 51 are sequentially connected to form an annular grouting cavity.
The grouting reinforcement ring 5 is provided with a grouting pipe 54 and a grout return pipe 55 which are communicated with the annular grouting cavity, and the lengths or heights of the grouting pipe 54 and the grout return pipe 55 need to enable pipe orifices of the grouting pipe and the grout return pipe to extend out of the upper surface or the side surface of the prestressed reinforced concrete layer. Generally, a grouting pipe 54 and a slurry return pipe 55 are located at the upper end of the outer surface of the hollow annular body, a feeding check valve is installed on the grouting pipe 54, and a stop valve is installed on the slurry return pipe 55. In addition, the grouting pipe and the slurry return pipe are arranged in a staggered mode in the circumferential direction of the annular grouting cavity.
In the invention, as shown in fig. 7, the cross section of the annular grouting cavity is formed by connecting a pair of symmetrically arranged transition sections 513 between an upper arc section 511 and a lower arc section 512, and particularly, the cross section of the annular grouting cavity is formed by connecting a pair of vertical transition sections between an upper semicircle and a lower semicircle which are arranged up and down, so that a circular metal pipe is favorably adopted for cutting to form the upper semicircle and the lower semicircle of the cross section, and a vertically arranged arc-shaped steel plate is welded between the end parts of the upper semicircle and the lower semicircle. Of course, the cross section of the annular grouting cavity is only an exemplary scheme, and the annular grouting cavity can also be rectangular or in other shapes.
An elastic water stop structure is arranged between the outer circumferential surface of the foundation ring 1 and the concrete foundation layer 2 and the prestressed reinforced concrete layer 3, as shown in fig. 8 and 9:
the waterproof sealing strip comprises a first sealing strip 41, a first polyurethane sealant layer 42, a rubber tube 43, a third polyurethane sealant layer 44, a waterproof material layer 45, a first non-woven geotextile layer 46, a second non-woven geotextile layer 47, a second sealing strip 48 and a second polyurethane sealant layer 49.
The upper surface of the concrete foundation layer 2 is provided with a first annular sealing groove surrounding the outer wall of the foundation ring 1 at a position close to the outer wall of the foundation ring 1, a first sealing strip 41 is arranged in the groove of the first annular sealing groove, and a first polyurethane sealing glue layer 42 is filled at the top of the first annular sealing groove.
The junction of the outer wall of the foundation ring 1, the concrete foundation layer 2 and the prestressed reinforced concrete layer 3 is an annular boundary, and the annular boundary is used as a reference: in the vertical direction, the area between the outer wall of the foundation ring 1 and the prestressed reinforced concrete layer 3 above the annular boundary is defined as a vertical annular waterproof area, and in the horizontal direction, the area between the concrete foundation layer 2 and the prestressed reinforced concrete layer 3 outside the annular boundary is positioned as a horizontal annular waterproof area; of course, it will be understood by those skilled in the art that the annular dividing line is annular since the outer wall of the base ring is generally circular, and the shape of the dividing line depends on the shape of the outer wall of the base ring, and will not be described in detail herein.
A ring of rubber tube 43 is arranged at the annular boundary line, the ring of rubber tube 43 is tightly attached to the first polyurethane sealant layer 42, and the gap between the rubber tube 43 and the outer wall of the foundation ring 1, between the rubber tube 43 and the first polyurethane sealant layer 42, or even between the rubber tube 43 and the concrete foundation layer 2 is filled with a third polyurethane sealant layer 44. the rubber tube 43 is usually a rubber tube with an inner diameter of 10 ~ 18mm and an outer diameter of 28 ~ 40 mm.
Set up waterproof material layer 45 that extends to horizontal annular waterproof district in perpendicular annular waterproof district, this waterproof material layer 45 includes waterproof coating film layer, first waterproof roll material layer, the waterproof roll material layer of second and the light-colored coating protective layer that sets gradually from inside to outside in perpendicular annular waterproof district. And a first non-woven geotextile layer 46 is arranged between the waterproof material layer 45 and the outer wall of the foundation ring 1, the lower part of the first non-woven geotextile layer 46 extends to the horizontal annular waterproof area, the first non-woven geotextile layer 46 is movably connected with the outer wall of the foundation ring 1 in a multi-point sticking mode, and a second non-woven geotextile layer 47 is arranged between the waterproof material layer 45 and the prestressed reinforced concrete layer 3. The waterproof material layer 45 is free to be separated at the joint area of the foundation ring 1, the concrete foundation layer 2 and the prestressed reinforced concrete layer 3. In addition, in this embodiment, first, two waterproofing membrane layers adopt be about 1.5mm thick natural asphalt waterproofing membrane, and two waterproofing membrane are tailor the back and are pasted, and the setting of staggering in the overlap joint position on first waterproofing membrane layer and the second waterproofing membrane layer, and require to tailor seam position and stagger between two parties.
A second annular sealing groove surrounding the outer wall of the foundation ring 1 is arranged at the position, close to the outer wall of the foundation ring 1, of the upper surface of the prestressed reinforced concrete layer 3, a second sealing strip 48 is arranged in the groove of the second annular sealing groove, and a second polyurethane sealing glue layer 49 is filled at the top of the second annular sealing groove. Of course, the above-described resilient water stop structure is merely exemplary and not limiting.
The working principle is as follows: the prestressed reinforced concrete layer is combined with the concrete foundation layer through a roughened surface, embedded bars and an annular groove with a specific structure, and concrete is poured into the annular grouting cavity to expand the whole grouting reinforcement ring to realize prestress post-tensioning, so that the prestressed reinforced concrete layer with the strength grade of more than C40 is obtained, and the structural reinforcement of the concrete foundation is realized; meanwhile, under the effect of bearing the long-term reciprocating fan load of the fan blade at the top of the tower, although the foundation ring 1 or the foundation anchor bolt has certain slight vibration, the water stopping structure has larger deformability, and the disengagement freedom degree between the waterproof material layer and the foundation ring 1, the concrete foundation 2 and the prestressed reinforced concrete layer 3, so that the direct infiltration of water caused by gaps and the tearing failure of the waterproof coiled material are avoided.
Claims (9)
1. The utility model provides a fan foundation prestressed concrete additional strengthening for support wind generating set's tower section of thick bamboo, its characterized in that: comprises that
The foundation ring is used for being connected with the fan tower;
the concrete foundation layer is arranged at the bottom and the periphery of the foundation ring;
the grouting reinforcement ring is provided with an annular grouting cavity body arranged along the extension direction of the grouting reinforcement ring, the grouting reinforcement ring is provided with a grouting pipe and a grout return pipe which are communicated with the annular grouting cavity body, and the pipe orifices of the grouting pipe and the grout return pipe extend out of the upper surface or the side surface of the prestressed reinforced concrete layer.
2. The wind turbine foundation prestressed concrete reinforcing structure of claim 1, characterized in that: the grouting reinforcement ring is formed by sequentially connecting a plurality of arc sections end to end through flanges, a flow channel which is communicated along the extending direction of the arc sections is arranged in the center of the arc sections, and an annular grouting cavity is formed after the arc sections are sequentially connected.
3. The wind turbine foundation prestressed concrete reinforcing structure according to claim 1 or 2, characterized in that: the cross section of the annular grouting cavity is formed by connecting a pair of vertical and symmetrically arranged transition sections between an upper arc section and a lower arc section.
4. The wind turbine foundation prestressed concrete reinforcing structure according to claim 1 or 2, characterized in that: the cross section of the annular grouting cavity is rectangular.
5. The wind turbine foundation prestressed concrete reinforcing structure according to claim 1 or 2, characterized in that: the upper surface of the concrete foundation layer is also provided with a plurality of bar planting holes which are vertical and do not penetrate through the concrete foundation layer; the prestressed reinforced concrete layer is internally provided with a steel bar framework, the steel bar framework is vertically connected with embedded bars, and the lower ends of the embedded bars vertically extend downwards into the embedded bar holes.
6. The wind turbine foundation prestressed concrete reinforcing structure according to claim 1 or 2, characterized in that: the upper surface of the concrete foundation layer is coaxially provided with a plurality of annular grooves taking the axis of the foundation ring as the circle center.
7. The wind turbine foundation prestressed concrete reinforcing structure of claim 1, characterized in that: and an elastic water stop structure is arranged between the outer circumferential surface of the foundation ring and the concrete foundation layer and between the outer circumferential surface of the foundation ring and the prestressed reinforced concrete layer.
8. The wind turbine foundation prestressed concrete reinforcing structure of claim 7, characterized in that: the elastic water stopping structure is as follows:
a first annular sealing groove surrounding the outer wall of the foundation ring is arranged at the position, close to the outer wall of the foundation ring, of the upper surface of the concrete foundation layer, a first sealing strip is arranged in the groove of the first annular sealing groove, and a first polyurethane sealing glue layer is filled at the top of the first annular sealing groove;
the junction of the outer wall of the foundation ring and the concrete foundation layer and the prestressed reinforced concrete layer is an annular boundary, the area between the outer wall of the foundation ring and the prestressed reinforced concrete layer above the annular boundary is defined as a vertical annular waterproof area in the vertical direction by taking the annular boundary as a reference, and the area between the concrete foundation layer and the prestressed reinforced concrete layer outside the annular boundary is positioned as a horizontal annular waterproof area in the horizontal direction;
a circle of rubber pipe is arranged at the annular boundary and clings to the first polyurethane sealing adhesive layer, and a third polyurethane sealing adhesive layer is filled in gaps among the rubber pipe, the outer wall of the foundation ring, the concrete foundation layer and the first polyurethane sealing adhesive layer;
the waterproof material layer extending to the horizontal annular waterproof area is arranged in the vertical annular waterproof area and comprises a waterproof coating layer, a first waterproof roll material layer, a second waterproof roll material layer and a light-color coating protective layer which are sequentially arranged in the vertical annular waterproof area from inside to outside;
and a second annular sealing groove surrounding the outer wall of the foundation ring is arranged at the position, close to the outer wall of the foundation ring, of the upper surface of the prestressed reinforced concrete layer, a second sealing strip is arranged in the groove of the second annular sealing groove, and a second polyurethane sealing adhesive layer is filled at the top of the second annular sealing groove.
9. The wind turbine foundation prestressed concrete reinforcing structure of claim 8, characterized in that: a first non-woven geotextile layer is arranged between the waterproof material layer and the outer wall of the foundation ring, and the lower part of the first non-woven geotextile layer extends to the horizontal annular waterproof area; and a second non-woven geotextile layer is arranged between the waterproof material layer and the post-cast concrete layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910910418.9A CN110629784A (en) | 2019-09-25 | 2019-09-25 | Fan foundation prestressed concrete additional strengthening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910910418.9A CN110629784A (en) | 2019-09-25 | 2019-09-25 | Fan foundation prestressed concrete additional strengthening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110629784A true CN110629784A (en) | 2019-12-31 |
Family
ID=68974254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910910418.9A Pending CN110629784A (en) | 2019-09-25 | 2019-09-25 | Fan foundation prestressed concrete additional strengthening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110629784A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779636A (en) * | 2020-07-13 | 2020-10-16 | 中国能源建设集团湖南火电建设有限公司 | Method for improving waterproof performance of foundation of wind generating set |
| CN112096573A (en) * | 2020-08-21 | 2020-12-18 | 中国电建集团华东勘测设计研究院有限公司 | Grouting-free dry-type prestressed bolt splicing and slicing prefabricated assembly type mixed tower |
| CN113756361A (en) * | 2021-08-10 | 2021-12-07 | 山东电力工程咨询院有限公司 | Foundation ring type fan foundation reinforcing structure and method |
| CN114411798A (en) * | 2021-12-24 | 2022-04-29 | 重庆市科源能源技术发展有限公司 | Fan foundation structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203420290U (en) * | 2013-08-08 | 2014-02-05 | 上海电力设计院有限公司 | Horizontal-direction waterproof system for connection position between draught fan foundation ring and reinforced concrete foundation |
| US20160097179A1 (en) * | 2014-10-07 | 2016-04-07 | Allan P. Henderson | Retrofit reinforcing structure addition and method for wind turbine concrete gravity spread foundations and the like |
| CN106284400A (en) * | 2016-09-18 | 2017-01-04 | 中国电建集团华东勘测设计研究院有限公司 | A kind of prestressed concrete Wind turbines basis |
| CN206396816U (en) * | 2017-01-13 | 2017-08-11 | 中国电建集团中南勘测设计研究院有限公司 | A kind of blower foundation various dimensions ruggedized construction |
| CN107366298A (en) * | 2017-08-02 | 2017-11-21 | 上海风畅土木工程技术有限公司 | A kind of conversion method for supporting for being used to reinforce blower foundation connection |
| CN208219690U (en) * | 2018-03-26 | 2018-12-11 | 中机华信诚电力工程有限公司 | A kind of waterproof construction of blower foundation and foundation ring |
| CN110004999A (en) * | 2019-05-08 | 2019-07-12 | 湖南科技大学 | Basic ring type blower foundation integrative consolidation device and reinforcement means |
| CN211257048U (en) * | 2019-09-25 | 2020-08-14 | 江苏筑岩建设有限公司 | Fan foundation prestressed concrete additional strengthening |
-
2019
- 2019-09-25 CN CN201910910418.9A patent/CN110629784A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203420290U (en) * | 2013-08-08 | 2014-02-05 | 上海电力设计院有限公司 | Horizontal-direction waterproof system for connection position between draught fan foundation ring and reinforced concrete foundation |
| US20160097179A1 (en) * | 2014-10-07 | 2016-04-07 | Allan P. Henderson | Retrofit reinforcing structure addition and method for wind turbine concrete gravity spread foundations and the like |
| CN106284400A (en) * | 2016-09-18 | 2017-01-04 | 中国电建集团华东勘测设计研究院有限公司 | A kind of prestressed concrete Wind turbines basis |
| CN206396816U (en) * | 2017-01-13 | 2017-08-11 | 中国电建集团中南勘测设计研究院有限公司 | A kind of blower foundation various dimensions ruggedized construction |
| CN107366298A (en) * | 2017-08-02 | 2017-11-21 | 上海风畅土木工程技术有限公司 | A kind of conversion method for supporting for being used to reinforce blower foundation connection |
| CN208219690U (en) * | 2018-03-26 | 2018-12-11 | 中机华信诚电力工程有限公司 | A kind of waterproof construction of blower foundation and foundation ring |
| CN110004999A (en) * | 2019-05-08 | 2019-07-12 | 湖南科技大学 | Basic ring type blower foundation integrative consolidation device and reinforcement means |
| CN211257048U (en) * | 2019-09-25 | 2020-08-14 | 江苏筑岩建设有限公司 | Fan foundation prestressed concrete additional strengthening |
Non-Patent Citations (1)
| Title |
|---|
| 陈俊岭;张佑臣;冯又全;: "风电机组基础环基础低强问题的加固措施研究", 建筑结构, no. 10, 20 May 2019 (2019-05-20), pages 124 - 129 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779636A (en) * | 2020-07-13 | 2020-10-16 | 中国能源建设集团湖南火电建设有限公司 | Method for improving waterproof performance of foundation of wind generating set |
| CN111779636B (en) * | 2020-07-13 | 2023-05-02 | 中国能源建设集团湖南火电建设有限公司 | Method for improving foundation waterproof performance of wind generating set |
| CN112096573A (en) * | 2020-08-21 | 2020-12-18 | 中国电建集团华东勘测设计研究院有限公司 | Grouting-free dry-type prestressed bolt splicing and slicing prefabricated assembly type mixed tower |
| CN112096573B (en) * | 2020-08-21 | 2022-02-11 | 中国电建集团华东勘测设计研究院有限公司 | Grouting-free dry-type prestressed bolt splicing and slicing prefabricated assembly type mixed tower |
| CN113756361A (en) * | 2021-08-10 | 2021-12-07 | 山东电力工程咨询院有限公司 | Foundation ring type fan foundation reinforcing structure and method |
| CN114411798A (en) * | 2021-12-24 | 2022-04-29 | 重庆市科源能源技术发展有限公司 | Fan foundation structure |
| CN114411798B (en) * | 2021-12-24 | 2023-08-25 | 重庆市科源能源技术发展有限公司 | Fan foundation structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110629784A (en) | Fan foundation prestressed concrete additional strengthening | |
| CN112096573B (en) | Grouting-free dry-type prestressed bolt splicing and slicing prefabricated assembly type mixed tower | |
| CN103867019B (en) | Assembling external prestressing RPC wind power tower | |
| CN211257048U (en) | Fan foundation prestressed concrete additional strengthening | |
| CN203755778U (en) | Assembly external pre-stress reactive powder concrete wind power tower | |
| US10851513B1 (en) | Combined offshore wind power foundation with duct piles and a bucket | |
| CN103114604A (en) | Prestressed concrete tubular type wind generating set foundation | |
| CN204753627U (en) | Prefabricated comprehensive piping lane | |
| CN109026079B (en) | Tunnel joint waterproof structure and waterproof construction method | |
| CN212452715U (en) | Burst prefabricated construction of dark heavy open caisson | |
| CN105421477A (en) | Construction method for tower crane foundation | |
| CN209873839U (en) | Steel corrugated plate concrete open caisson | |
| CN112195957B (en) | Reinforced connecting structure of fan tower and foundation and construction method | |
| CN213392499U (en) | Grouting-free dry-type prestressed bolt splicing and slicing prefabricated assembly type mixed tower | |
| CN113718819A (en) | Prefabricated assembly type wind power tower cylinder foundation and assembly method | |
| CN202745006U (en) | Core wall dam bank slope overlap joint type dam foundation gallery structure | |
| CN210887282U (en) | Steel grating ring type wind power tower foundation ring facility | |
| CN202247719U (en) | Corresponding corrugated pre-stressed anti-sedimentation culvert pipe for bridge | |
| CN207714371U (en) | Assembled cast-in-place concrete structure non-dismantling formwork piping lane | |
| CN215948244U (en) | Prefabricated assembled concrete open caisson | |
| CN115341595A (en) | Beam-slab type wind power original site extension foundation and construction method thereof | |
| CN211257049U (en) | Fan foundation sealing structure | |
| CN214403858U (en) | Prefabricated dry-type assembled concrete-steel hybrid tower of wind generating set | |
| CN211037032U (en) | Secondary protection ring structure of foundation of wind driven generator with prestressed anchor bolts | |
| CN211714004U (en) | Fan reinforcing ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |