CN104790424A - Reinforcing system and reinforcing method of wind power generation tower foundation ring foundation - Google Patents

Reinforcing system and reinforcing method of wind power generation tower foundation ring foundation Download PDF

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Publication number
CN104790424A
CN104790424A CN201510183824.1A CN201510183824A CN104790424A CN 104790424 A CN104790424 A CN 104790424A CN 201510183824 A CN201510183824 A CN 201510183824A CN 104790424 A CN104790424 A CN 104790424A
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China
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anchor pole
foundation
discharge ring
switching
girder steel
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CN201510183824.1A
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Chinese (zh)
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CN104790424B (en
Inventor
何桂荣
马逸鹄
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同济大学建筑设计研究院(集团)有限公司
江苏金海新能源科技有限公司
内蒙古金海新能源科技股份有限公司
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Priority to CN201510183824.1A priority Critical patent/CN104790424B/en
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Abstract

The invention relates to a reinforcing system and reinforcing method of a wind power generation tower foundation ring foundation. The system comprises the foundation ring foundation (1) and a draught fan tower drum (2). The foundation ring foundation (1) comprises a foundation bottom plate (10), a concrete column pier (9) and a foundation ring (8), and the foundation ring (8) is connected with the draught fan tower drum (2). Steel beams (5) are symmetrically arranged on the outer side of the foundation ring (8) and on the top of the concrete column pier (9), the steel beams (5) surround the foundation ring (8) to form a regular-hexagon-shaped area, and steel-reinforced concrete beams (6) are poured around the regular-hexagon-shaped steel beams (5) and on the outer side of the foundation ring (8). The two ends of the steel beams (5) are connected with prestress anchor rod assemblies (7), and the lower ends of the stress anchor rod assemblies (7) are anchored in the foundation bottom plate (10). Pre-tension force is applied to a prestress anchor rod, so that pre-compressive stress is generated on concrete around the foundation ring, and accordingly the crack problem of the foundation ring foundation caused by fatigue can be fundamentally solved.

Description

The hardened system of generation power foundation of wind power cyclic group plinth and reinforcement means thereof

Technical field

The invention belongs to generation power foundation of wind power reinforcing technique field, be specifically related to a kind of hardened system and reinforcement means thereof of generation power foundation of wind power cyclic group plinth.

Background technology

Current flush type tower barrel base at home wind-power market has certain occupation rate.But this tower barrel base is subject to the restriction of foundation depth, cause buried section buried foundation excessively shallow, approximately only have the blower fan tower barrel diameter of 0.3 ~ 0.4 times.And according to " Code for design of steel structures " (GB50017-2003) 8.4.15 article, it is 1.5d (d is the external diameter of tubular pillar) that plug-in type suspension column inserts minimum-depth, and practical basis ring length of embedment to be only 0.3d ~ 0.4d far away from 1.5d.Because tower cylinder buried depth is shallow, the bending resistance that tower cylinder lateral force provides is more limited.The destruction that basis can be caused during this excessively shallow length of embedment of flush type tower cylinder to produce because of fatigue loading, impacts the crack of structural safety in steel cylinder embedding part office.As a kind of special steel reinforced concrete structure, tower cylinder and concrete are because bi-material performance is different in the process of carrying, and distortion can not be harmonious.Under high Zhou Fanfu Fatigue Load, the bond stress between tower cylinder and concrete disappears along with vibration, throws off between tower barrel and basis; Local failure is there is in leeward side surface of base concrete under tower cylinder pressurized percussion.

This crack directly results in blower fan and waves excessive and shut down.Current existing recovery technique is directly to the grouting of tower cylinder crack place, and this processing method only can solve the problem in crack in the short time, but under fatigue loading, the stressed zone concentrated still can generate crack in a short time.

Therefore, necessary on the basis of prior art, a kind of reasonable in design of design research and development, firm stable, effectively can solve the discharge ring basis hardened system of fatigue failure and the method for reinforcing thereof.

Summary of the invention

Goal of the invention: the object of the present invention is to provide a kind of reasonable in design, firm stable, easy to implement, effectively can solve the hardened system of the generation power foundation of wind power cyclic group plinth of discharge ring basis fatigue failure.Another object of the present invention is to provide the reinforcement means of generation power foundation of wind power cyclic group plinth.The method fundamentally can solve discharge ring basis produces cracking destruction problem because of tired.

Technical scheme: a kind of hardened system of generation power foundation of wind power cyclic group plinth, this system comprises:

Discharge ring basis and blower fan tower barrel, described discharge ring basis comprises sole plate, and be connected to the concrete stub on sole plate, lower end is embedded in the discharge ring in concrete stub, and described discharge ring upper end is connected with blower fan tower barrel by flange;

Outside described discharge ring and concrete stub top is furnished with 6 girder steels symmetrically, and adjacent two girder steel infalls welding, adopts bolt splicing in the middle of girder steel; 6 girder steels form regular hexagon region around discharge ring, around regular hexagon girder steel and outside discharge ring, built steel framed concrete beam;

The two ends of described girder steel are connected with prestressed anchor composite member; Prestressed anchor composite member anchoring lower ends is in sole plate.

Preferably, the hardened system of above-described generation power foundation of wind power cyclic group plinth, described prestressed anchor composite member is 2.

Preferably, the hardened system of above-described generation power foundation of wind power cyclic group plinth, described prestressed anchor composite member comprises anchor pole, switching beam and lower anchor pole, and upper anchor pole upper end is anchored at girder steel end face through girder steel, and upper anchor pole lower end is anchored at switching beam bottom surface through switching beam; Lower anchor pole upper end is anchored at switching beam end face through switching beam, and lower anchor pole anchoring lower ends is in sole plate.

Preferably, the hardened system of above-described generation power foundation of wind power cyclic group plinth, the described anchoring of lower anchor pole in sole plate is divided into upper and lower two parts: bottom is anchoring section, is injected with epoxy resin between anchor pole and concrete; Top is free segment, and overcoat has PVC sleeve pipe, is cast-in-place high-strength mortar cushion block between described switching beam and sole plate.

The reinforcement means of generation power foundation of wind power cyclic group plinth provided by the invention, it comprises the following steps:

A, high-strength grout is injected the lesion cavities on flange top at the bottom of discharge ring, form high-strength grout joint filling;

B, epoxy resin injected crack between discharge ring and stub, form epoxy resin joint filling;

C, to hole on sole plate, insert lower anchor pole, and in lower anchor pole lower, outer perimeter injection ring epoxy resins, PVC sleeve pipe on the cover of lower anchor pole top, then high-strength mortar cushion block is built at sole plate end face, then on high-strength mortar cushion block, place switching beam, anchor pole under stretch-draw is also anchored at switching beam end face;

D, outside discharge ring and concrete stub top arrange 6 girder steels symmetrically, adjacent two girder steel infalls welding, girder steel centre bolt splices; 6 girder steels form regular hexagon region, then colligation distributing bar around girder steel around discharge ring, and rear bolt in place links into an integrated entity, and then at the regular hexagon areas outside support shuttering that 6 girder steels are formed, concreting, forms steel framed concrete beam; And mixed earth is also built, to improve the globality of beam and tower cylinder in discharge ring and inscribed circle and hexagonal space;

E, then by upper anchor pole lower end through switching beam be anchored at switching beam bottom surface, make anchor pole upper end through girder steel, stretch-draw is carried out to upper anchor pole, after stretch-draw by anchor rod anchored at girder steel end face, complete and precompression is applied to the position of discharge ring periphery fatiguability cracking, realize the reinforcing of generation power foundation of wind power cyclic group plinth.

Compared to the prior art the present invention has following beneficial effect:

1. the hardened system of generation power foundation of wind power cyclic group plinth provided by the invention, reasonable in design, firm stable, easy to implement, effectively can solve discharge ring basis fatigue failure.

2. the reinforcement means of generation power foundation of wind power cyclic group plinth provided by the invention, workable, except the crack in discharge ring base concrete is processed, also precompression is applied to the position of discharge ring periphery fatiguability cracking, reduce the tensile stress that these positions produce under blower fan Fatigue Load, make it to ftracture again.In addition, prestressing force makes the multidirectional pressurized of concrete, and intensity improves.

3. prestressing force of the present invention is pressed on the realization of concrete stub upper surface with the combination steel framed concrete beam of regular hexagon plane distribution; Steel framed concrete beam can also increase discharge ring buried depth, produces lateral pressure, and the anchored force making to act on flange at the bottom of discharge ring reduces.

4. girder steel end of the present invention prestressed anchor composite member anchors into sole plate; Connect switching beam between the upper anchor pole of prestressed anchor composite member and lower anchor pole, make anchor pole and lower anchor pole have dual prestressing force effect, reduce the Fatigue Stress Amplitude of anchor pole tension further, make the anchorage effect of anchor pole more stable.

Easy construction of the present invention, fundamentally can solve discharge ring basis produces cracking problem because of tired.

Accompanying drawing explanation

Fig. 1 is the plane structure schematic diagram of the hardened system of a kind of generation power foundation of wind power cyclic group of the present invention plinth.

Fig. 2 reinforces discharge ring basis cross-sectional view for waiting.

Fig. 3 is the A-A sectional drawing of Fig. 1.

Fig. 4 is the B-B sectional drawing of Fig. 1.

Fig. 5 is the C-C sectional drawing of Fig. 4, i.e. prestressed anchor assembling unit structure schematic diagram.

Wherein: cyclic group plinth based on 1; 2 is blower fan tower barrel; 3 is epoxy resin joint filling thing; 4 is high-strength grout joint filling thing; 5 is girder steel; 6 is steel framed concrete beam; 7 is prestressed anchor composite member; Ring based on 8; 9 is concrete stub; Base plate based on 10; 11 is crack; 12 is lesion cavities; 13 is upper anchor pole; 14 is switching beam; 15 is lower anchor pole; 16 is epoxy resin; 17 is PVC sleeve pipe; 18 is high-strength mortar cushion block.

Detailed description of the invention

Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.

Embodiment 1

As shown in Figures 1 to 5, a kind of hardened system of generation power foundation of wind power cyclic group plinth, its this system comprises:

Discharge ring basis (1) and blower fan tower barrel (2), described discharge ring basis (1) comprises sole plate (10), be connected to the concrete stub (9) on sole plate (10), lower end is embedded in the discharge ring (8) in concrete stub (9), and described discharge ring (8) upper end is connected with blower fan tower barrel (2) by flange;

Described discharge ring (8) outside and concrete stub (9) top are furnished with 6 girder steels (5) symmetrically, and adjacent two girder steel (5) infalls welding, adopts bolt splicing in the middle of girder steel (5); 6 girder steels (5) form regular hexagon region around discharge ring (8), around regular hexagon girder steel (5) and outside discharge ring (8), built steel framed concrete beam (6);

The two ends of described girder steel (5) are connected with prestressed anchor composite member (7); Prestressed anchor composite member (7) anchoring lower ends is in sole plate (10).

The hardened system of above-described generation power foundation of wind power cyclic group plinth, described prestressed anchor composite member (7) comprises anchor pole (13), switching beam (14) and lower anchor pole (15), upper anchor pole (13) upper end is anchored at girder steel (5) end face through girder steel (5), and upper anchor pole (13) lower end is anchored at switching beam (14) bottom surface through switching beam (14); Lower anchor pole (15) upper end is anchored at switching beam (14) end face through switching beam (14), and lower anchor pole (15) anchoring lower ends is in sole plate (10).

The hardened system of above-described generation power foundation of wind power cyclic group plinth, the described anchoring of lower anchor pole (15) in sole plate (10) is divided into upper and lower two parts: bottom is anchoring section, is injected with epoxy resin (16) between anchor pole and concrete; Top is free segment, and overcoat has PVC sleeve pipe (17), is cast-in-place high-strength mortar cushion block (18) between described switching beam (14) and sole plate (10).

Embodiment 2

As shown in Figures 1 to 5, a kind of reinforcement means of generation power foundation of wind power cyclic group plinth, is characterized in that, comprise the following steps:

A, high-strength grout is injected the lesion cavities (12) on discharge ring (8) end flange top, form high-strength grout joint filling thing (4);

B, epoxy resin injected crack (11) between discharge ring (8) and stub (9), form epoxy resin joint filling thing (3);

C, boring on sole plate (10), insert lower anchor pole (15), and at lower anchor pole (15) lower, outer perimeter injection ring epoxy resins (16), PVC sleeve pipe (17) is put on lower anchor pole (15) top, then high-strength mortar cushion block (18) is built at sole plate (10) end face, then on high-strength mortar cushion block (18), place switching beam (14), anchor pole (15) under stretch-draw is also anchored at switching beam (14) end face;

D, arrange 6 girder steels (5) symmetrically in discharge ring (8) outside and concrete stub (9) top, adjacent two girder steel (5) infalls welding, girder steel (5) centre bolt splices; 6 girder steels (5) form regular hexagon region around discharge ring (8), then colligation distributing bar around girder steel (5), rear bolt in place links into an integrated entity, then at the regular hexagon areas outside support shuttering that 6 girder steels (5) are formed, concreting, forms steel framed concrete beam (6);

E, then by upper anchor pole (13) lower end through switching beam (14) be anchored at switching beam (14) bottom surface, make anchor pole (13) upper end through girder steel (5), stretch-draw is carried out to upper anchor pole (13), after stretch-draw, anchor pole (13) is anchored at girder steel (5) end face, complete and precompression is applied to the position of discharge ring (8) periphery fatiguability cracking, realize the reinforcing of generation power foundation of wind power cyclic group plinth.

Above embodiment is only for illustrating technical conceive of the present invention and feature; its object is to allow person skilled in the art understand content of the present invention and to be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.

Claims (5)

1. a hardened system for generation power foundation of wind power cyclic group plinth, is characterized in that, this system comprises:
Discharge ring basis (1) and blower fan tower barrel (2), described discharge ring basis (1) comprises sole plate (10), be connected to the concrete stub (9) on sole plate (10), lower end is embedded in the discharge ring (8) in concrete stub (9), and described discharge ring (8) upper end is connected with blower fan tower barrel (2) by flange;
Described discharge ring (8) outside and concrete stub (9) top are furnished with 6 girder steels (5) symmetrically, and adjacent two girder steel (5) infalls welding, adopts bolt splicing in the middle of girder steel (5); 6 girder steels (5) form regular hexagon region around discharge ring (8), around regular hexagon girder steel (5) and outside discharge ring (8), built steel framed concrete beam (6);
The two ends of described girder steel (5) are connected with prestressed anchor composite member (7); Prestressed anchor composite member (7) anchoring lower ends is in sole plate (10).
2. the hardened system of generation power foundation of wind power cyclic group plinth according to claim 1, is characterized in that, described prestressed anchor composite member (7) is 2.
3. the hardened system of generation power foundation of wind power cyclic group plinth according to claim 1, it is characterized in that, described prestressed anchor composite member (7) comprises anchor pole (13), switching beam (14) and lower anchor pole (15), upper anchor pole (13) upper end is anchored at girder steel (5) end face through girder steel (5), and upper anchor pole (13) lower end is anchored at switching beam (14) bottom surface through switching beam (14); Lower anchor pole (15) upper end is anchored at switching beam (14) end face through switching beam (14), and lower anchor pole (15) anchoring lower ends is in sole plate (10).
4. the hardened system of generation power foundation of wind power cyclic group plinth according to claim 1, it is characterized in that, the described anchoring of lower anchor pole (15) in sole plate (10) is divided into upper and lower two parts: bottom is anchoring section, is injected with epoxy resin (16) between anchor pole and concrete; Top is free segment, and overcoat has PVC sleeve pipe (17), is cast-in-place high-strength mortar cushion block (18) between described switching beam (14) and sole plate (10).
5. a reinforcement means for generation power foundation of wind power cyclic group plinth, is characterized in that, comprises the following steps:
A, high-strength grout is injected the lesion cavities (12) on discharge ring (8) end flange top, form high-strength grout joint filling thing (4);
B, epoxy resin injected crack (11) between discharge ring (8) and stub (9), form epoxy resin joint filling thing (3);
C, boring on sole plate (10), insert lower anchor pole (15), and at lower anchor pole (15) lower, outer perimeter injection ring epoxy resins (16), PVC sleeve pipe (17) is put on lower anchor pole (15) top, then high-strength mortar cushion block (18) is built at sole plate (10) end face, then on high-strength mortar cushion block (18), place switching beam (14), anchor pole (15) under stretch-draw is also anchored at switching beam (14) end face;
D, arrange 6 girder steels (5) symmetrically in discharge ring (8) outside and concrete stub (9) top, adjacent two girder steel (5) infalls welding, girder steel (5) centre bolt splices; 6 girder steels (5) form regular hexagon region around discharge ring (8), then colligation distributing bar around girder steel (5), rear bolt in place links into an integrated entity, then at the regular hexagon areas outside support shuttering that 6 girder steels (5) are formed, concreting, forms steel framed concrete beam (6);
E, then by upper anchor pole (13) lower end through switching beam (14) be anchored at switching beam (14) bottom surface, make anchor pole (13) upper end through girder steel (5), stretch-draw is carried out to upper anchor pole (13), after stretch-draw, anchor pole (13) is anchored at girder steel (5) end face, complete and precompression is applied to the position of discharge ring (8) periphery fatiguability cracking, realize the reinforcing of generation power foundation of wind power cyclic group plinth.
CN201510183824.1A 2015-04-17 2015-04-17 The hardened system on generation power foundation of wind power ring basis and reinforcement means thereof CN104790424B (en)

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CN105040726A (en) * 2015-08-04 2015-11-11 上海风畅土木工程技术有限公司 Method for applying circular prestress on fan foundation connection
CN105133677A (en) * 2015-08-19 2015-12-09 河北君圣新能源科技有限公司 Foundation reinforcement system and method for wind generating set
CN105756081A (en) * 2016-05-05 2016-07-13 江苏金海新能源科技有限公司 Self-tapered end prestress wire circular truncated cone concrete drum offshore wind turbine foundation and construction method thereof
CN106592660A (en) * 2016-12-21 2017-04-26 神华集团有限责任公司 Draught fan foundation restoration method
US10544559B2 (en) 2016-11-02 2020-01-28 Inventus Holdings, Llc Pier and mat foundation fortification and monitoring system
CN111379669A (en) * 2020-03-24 2020-07-07 国电联合动力技术有限公司 Reinforcing device and reinforcing method for concrete table column of fan foundation
US10815969B2 (en) 2016-11-10 2020-10-27 General Electric Company Methods and apparatus for refurbishing wind turbine foundations

Families Citing this family (1)

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JP2019090198A (en) * 2017-11-13 2019-06-13 国立大学法人東京工業大学 Joint structure between concrete member and steel material

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CN203583511U (en) * 2013-12-04 2014-05-07 湘电风能有限公司 Basic ring anti-loosening fixing device
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CN105040726A (en) * 2015-08-04 2015-11-11 上海风畅土木工程技术有限公司 Method for applying circular prestress on fan foundation connection
CN105133677A (en) * 2015-08-19 2015-12-09 河北君圣新能源科技有限公司 Foundation reinforcement system and method for wind generating set
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CN105756081A (en) * 2016-05-05 2016-07-13 江苏金海新能源科技有限公司 Self-tapered end prestress wire circular truncated cone concrete drum offshore wind turbine foundation and construction method thereof
US10544559B2 (en) 2016-11-02 2020-01-28 Inventus Holdings, Llc Pier and mat foundation fortification and monitoring system
US10815969B2 (en) 2016-11-10 2020-10-27 General Electric Company Methods and apparatus for refurbishing wind turbine foundations
CN106592660A (en) * 2016-12-21 2017-04-26 神华集团有限责任公司 Draught fan foundation restoration method
CN111379669A (en) * 2020-03-24 2020-07-07 国电联合动力技术有限公司 Reinforcing device and reinforcing method for concrete table column of fan foundation

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