CN104790424B - The hardened system on generation power foundation of wind power ring basis and reinforcement means thereof - Google Patents
The hardened system on generation power foundation of wind power ring basis and reinforcement means thereof Download PDFInfo
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- CN104790424B CN104790424B CN201510183824.1A CN201510183824A CN104790424B CN 104790424 B CN104790424 B CN 104790424B CN 201510183824 A CN201510183824 A CN 201510183824A CN 104790424 B CN104790424 B CN 104790424B
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Abstract
The present invention relates to the hardened system on a kind of generation power foundation of wind power ring basis and reinforcement means thereof, this system includes: foundation ring basis (1) and blower fan tower barrel (2), foundation ring basis (1) includes sole plate (10), concrete stub (9), foundation ring (8), foundation ring (8) is connected with blower fan tower barrel (2)；Foundation ring (8) outside and concrete stub (9) top have been arranged symmetrically girder steel (5), girder steel (5) forms regular hexagon region around foundation ring (8), has built steel framed concrete beam (6) around regular hexagon girder steel (5) and outside foundation ring (8)；The two ends of girder steel (5) are connected with prestressed anchor molectron (7)；Prestressed anchor molectron (7) anchoring lower ends is in sole plate (10).The present invention, by prestressed anchor is applied pretension, makes foundation ring periphery concrete produce compressive pre-stress, it is possible to fundamentally solve the problem that foundation ring basis produces cracking because of tired.
Description
Technical field
The invention belongs to generation power foundation of wind power reinforcement technique field, be specifically related to hardened system and the reinforcement means thereof on a kind of generation power foundation of wind power ring basis.
Background technology
Current embedded type tower barrel base wind-power market at home has certain occupation rate.But, this tower barrel base is subject to the restriction of depth of foundation, causes that buried section buried foundation is excessively shallow, only about the blower fan tower barrel diameter of 0.3～0.4 times.And according to " Code for design of steel structures " (GB50017-2003) the 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 is only 0.3d～0.4d far less than 1.5d.Owing to tower buried depth is shallow, the bending resistance ratio that tower side force provides is relatively limited.The destruction that basis can be caused to produce because of fatigue load during this excessively shallow length of embedment of embedded type tower, impacts the crack of structural safety in steel cylinder embedding part office.As a kind of special steel reinforced concrete structure, tower and concrete carrying process in due to bi-material performance different, deformation can not be harmonious.Under high Zhou Fanfu Fatigue Load, the bond stress between tower and concrete disappears along with vibration, disengages between tower wall and basis；Local failure is there is in leeward side surface of base concrete under tower pressurized percussion.
This crack directly results in blower fan and waves excessive and shut down.Current existing recovery technique is directly to be in the milk in tower crack place, and this processing method is only capable of the problem in short time solution crack, but under fatigue load, the stressed zone of concentration 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, can effectively solve the hardened system of foundation ring basis fatigue rupture and the method for reinforcing thereof.
Summary of the invention
Goal of the invention: it is an object of the invention to provide a kind of reasonable in design, firm stable, it is easy to implement, can effectively solve the hardened system on the generation power foundation of wind power ring basis of foundation ring basis fatigue rupture.Another object of the present invention is to provide the reinforcement means on generation power foundation of wind power ring basis.The method can fundamentally solve the problem that foundation ring basis produces cracking destruction because of tired.
Technical scheme: the hardened system on a kind of generation power foundation of wind power ring basis, this system includes:
Foundation ring basis and blower fan tower barrel, described foundation ring basis includes sole plate, is connected to the concrete stub on sole plate, and lower end is embedded in the foundation ring in concrete stub, and described foundation ring upper end is connected with blower fan tower barrel by flange；
Outside described foundation ring and concrete column pier top portion has been arranged symmetrically 6 girder steels, adjacent two girder steel infalls welding, adopts bolt splicing in the middle of girder steel；6 girder steels form regular hexagon region around foundation ring, have built steel framed concrete beam around regular hexagon girder steel and outside foundation ring；
The two ends of described girder steel are connected with prestressed anchor molectron；Prestressed anchor molectron anchoring lower ends is in sole plate.
Preferably, the hardened system on above-described generation power foundation of wind power ring basis, described prestressed anchor molectron is 2.
Preferably, the hardened system on above-described generation power foundation of wind power ring basis, described prestressed anchor molectron includes 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 on above-described generation power foundation of wind power ring basis, the anchoring in sole plate of the described lower anchor pole 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, is cased with outward PVC sleeve pipe, is cast-in-place high-strength mortar cushion block between described switching beam and sole plate.
The reinforcement means on generation power foundation of wind power ring provided by the invention basis, it comprises the following steps:
A, high-strength grout is injected the lesion cavities on flange top at the bottom of foundation ring, form high-strength grout joint filling；
B, the crack injected by epoxy resin between foundation ring and stub, form epoxy resin joint filling；
C, boring on sole plate, insert lower anchor pole, and in lower anchor pole lower, outer perimeter injection ring epoxy resins, PVC sleeve pipe on lower anchor pole top is overlapped, 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 be anchored at switching beam end face under stretch-draw；
D, outside foundation ring and concrete column pier top portion be arranged symmetrically 6 girder steels, adjacent two girder steel infalls welding, splice with bolt in the middle of girder steel；6 girder steels form regular hexagon region, then colligation distributing bar around girder steel around foundation ring, are connected with integral after in place, the regular hexagon areas outside support shuttering then formed at 6 girder steels, and casting concrete forms steel framed concrete beam；And foundation ring and inscribed circle and hexagonal space also build mixed earth, to improve the globality of beam and tower；
E, then by upper anchor pole lower end through switching beam be anchored at switching beam bottom surface, make anchor pole upper end traverse girder steel, upper anchor pole is carried out stretch-draw, by anchor rod anchored at girder steel end face after stretch-draw, complete the position of foundation ring periphery fatiguability cracking is applied precompression, it is achieved the reinforcing on generation power foundation of wind power ring basis.
Compared to the prior art the present invention has the advantages that
1. the hardened system on generation power foundation of wind power ring provided by the invention basis, reasonable in design, firm stable, it is easy to implement, can effectively solve the fatigue rupture of foundation ring basis.
2. the reinforcement means on generation power foundation of wind power ring provided by the invention basis, workable, except the crack in foundation ring base concrete is processed, also the position of foundation ring periphery fatiguability cracking is applied precompression, reduce the tension that these positions produce under blower fan Fatigue Load, so it does not ftracture again.It addition, prestressing force makes the multidirectional pressurized of concrete, 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 foundation ring buried depth, produces lateral pressure, makes the anchor force acting on flange at the bottom of foundation ring reduce.
4. girder steel end of the present invention prestressed anchor molectron anchors into sole plate；Connecting switching beam between upper anchor pole and the lower anchor pole of prestressed anchor molectron, make anchor pole and lower anchor pole have dual prestressing force effect, reduce the Fatigue Stress Amplitude of anchor pole tension further, the anchorage effect making anchor pole is more stable.
Easy construction of the present invention, can fundamentally solve the problem that foundation ring basis produces cracking because of tired.
Accompanying drawing explanation
Fig. 1 is the planar structure schematic diagram of the hardened system on a kind of generation power foundation of wind power ring basis of the present invention.
Fig. 2 is for waiting to reinforce foundation ring basis cross-sectional view.
Fig. 3 is the A-A profile of Fig. 1.
Fig. 4 is the B-B profile of Fig. 1.
Fig. 5 is the C-C profile of Fig. 4, i.e. prestressed anchor assembling unit structure schematic diagram.
Wherein: based on 1 ring basis；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 molectron；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, the present invention is expanded on further.Should be understood that these embodiments are merely to illustrate the present invention rather than restriction the scope of the present invention.In addition, it is to be understood that after having read the content that the present invention lectures, the present invention can be made various changes or modifications by those skilled in the art, and these equivalent form of values fall within the application appended claims limited range equally.
Embodiment 1
As shown in Figures 1 to 5, the hardened system on a kind of generation power foundation of wind power ring basis, its this system includes:
Foundation ring basis (1) and blower fan tower barrel (2), described foundation ring basis (1) includes sole plate (10), it is connected to the concrete stub (9) on sole plate (10), lower end is embedded in the foundation ring (8) in concrete stub (9), and described foundation ring (8) upper end is connected with blower fan tower barrel (2) by flange；
Described foundation ring (8) outside and concrete stub (9) top have been arranged symmetrically 6 girder steels (5), adjacent two girder steel (5) infalls welding, adopt bolt splicing in the middle of girder steel (5)；6 girder steels (5) form regular hexagon region around foundation ring (8), have built steel framed concrete beam (6) around regular hexagon girder steel (5) and outside foundation ring (8)；
The two ends of described girder steel (5) are connected with prestressed anchor molectron (7)；Prestressed anchor molectron (7) anchoring lower ends is in sole plate (10).
The hardened system on above-described generation power foundation of wind power ring basis, described prestressed anchor molectron (7) includes 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 on above-described generation power foundation of wind power ring basis, the anchoring in sole plate (10) of the described lower anchor pole (15) 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, is cased with outward 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, the reinforcement means on a kind of generation power foundation of wind power ring basis, it is characterised in that comprise the following steps:
A, high-strength grout is injected the lesion cavities (12) on foundation ring (8) end flange top, form high-strength grout joint filling thing (4)；
B, the crack (11) injected by epoxy resin between foundation ring (8) and stub (9), form epoxy resin joint filling thing (3)；
C, boring on sole plate (10), insert lower anchor pole (15), and in 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), switching beam (14) is placed, anchor pole (15) be anchored at switching beam (14) end face under stretch-draw；
D, being arranged symmetrically 6 girder steels (5) in foundation 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 foundation ring (8), then colligation distributing bar around girder steel (5), it is connected with integral after in place, then the regular hexagon areas outside support shuttering formed 6 girder steels (5), casting concrete, 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 traverse girder steel (5), upper anchor pole (13) is carried out stretch-draw, after stretch-draw, anchor pole (13) is anchored at girder steel (5) end face, complete the position of foundation ring (8) periphery fatiguability cracking is applied precompression, it is achieved the reinforcing on generation power foundation of wind power ring basis.
Embodiment of above is only for illustrating technology design and the feature of the present invention; its object is to allow person skilled in the art understand present invention and to be carried out; can not limit the scope of the invention with this; all equivalences done according to spirit of the invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (1)
1. the reinforcement means on a generation power foundation of wind power ring basis, it is characterised in that comprise the following steps:
A, high-strength grout is injected the lesion cavities (12) on foundation ring (8) end flange top, form high-strength grout joint filling thing (4)；
B, the crack (11) injected by epoxy resin between foundation ring (8) and stub (9), form epoxy resin joint filling thing (3)；
C, boring on sole plate (10), insert lower anchor pole (15), and in 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), switching beam (14) is placed, anchor pole (15) be anchored at switching beam (14) end face under stretch-draw；
D, being arranged symmetrically 6 girder steels (5) in foundation 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 foundation ring (8), then colligation distributing bar around girder steel (5), it is connected with integral after in place, then the regular hexagon areas outside support shuttering formed 6 girder steels (5), casting concrete, 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 traverse girder steel (5), upper anchor pole (13) is carried out stretch-draw, after stretch-draw, anchor pole (13) is anchored at girder steel (5) end face, complete the position of foundation ring (8) periphery fatiguability cracking is applied precompression, it is achieved the reinforcing on generation power foundation of wind power ring basis.
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| CN201510183824.1A CN104790424B (en) | 2015-04-17 | 2015-04-17 | The hardened system on generation power foundation of wind power ring basis and reinforcement means thereof |
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| CN201510183824.1A CN104790424B (en) | 2015-04-17 | 2015-04-17 | The hardened system on generation power foundation of wind power ring basis and reinforcement means thereof |
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| WO2019093514A1 (en) * | 2017-11-13 | 2019-05-16 | Tokyo Institute Of Technology | Joining structure for a steel member having an end part embedded in a concrete member |
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| CN105133677B (en) * | 2015-08-19 | 2016-12-07 | 黑龙江省林禾风电测控科技有限公司 | Foundation of wind-driven generator unit hardened system and reinforcement means |
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| CN202152463U (en) * | 2011-07-03 | 2012-02-29 | 江苏金海风电科技有限公司 | Foundation pressure-bearing beam plate type wind power generation tower foundation |
| US8443557B2 (en) * | 2011-09-16 | 2013-05-21 | General Electric Company | Tower base section of a wind turbine, a wind turbine and a system for mounting a tower |
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| EP2738322B1 (en) * | 2012-11-29 | 2016-01-20 | Siemens Aktiengesellschaft | Tower structure |
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| CN204728356U (en) * | 2015-04-17 | 2015-10-28 | 同济大学建筑设计研究院(集团)有限公司 | The hardened system of generation power foundation of wind power cyclic group plinth |
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| WO2019093514A1 (en) * | 2017-11-13 | 2019-05-16 | Tokyo Institute Of Technology | Joining structure for a steel member having an end part embedded in a concrete member |
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