CN115492151A - Construction method for high-strength consolidation repair of offshore wind power pile type foundation - Google Patents
Construction method for high-strength consolidation repair of offshore wind power pile type foundation Download PDFInfo
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- CN115492151A CN115492151A CN202211099740.6A CN202211099740A CN115492151A CN 115492151 A CN115492151 A CN 115492151A CN 202211099740 A CN202211099740 A CN 202211099740A CN 115492151 A CN115492151 A CN 115492151A
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- wind power
- repair
- power pile
- ring
- grouting
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- 230000008439 repair process Effects 0.000 title claims abstract description 43
- 238000010276 construction Methods 0.000 title claims abstract description 30
- 238000007596 consolidation process Methods 0.000 title claims abstract description 22
- 239000002002 slurry Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000011440 grout Substances 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005034 decoration Methods 0.000 claims description 2
- 150000001875 compounds Chemical group 0.000 claims 1
- 239000011372 high-strength concrete Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000006378 damage Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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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
- E02D27/10—Deep foundations
- E02D27/12—Pile 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/64—Repairing piles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a construction method for a high-strength repair structure of an offshore wind power pile type foundation, which comprises the following steps: hoisting a repairing ring to be fixed above the damaged part on the wind power pile type foundation, wherein a grouting hole formed in the repairing ring faces towards a construction ship; using a striking device to break down the wind power pile type foundation at the position corresponding to the grouting hole of the repair ring 1 to form a gap close to the size of the grouting hole; connecting a high-strength consolidation slurry pipeline to the grouting hole by the construction ship, and pouring high-strength consolidation slurry into the wind power pile type foundation; pouring the high-strength consolidation slurry until the slurry overflows the grouting hole; and after grouting is finished, recovering the grouting pipeline, rotating the repair ring for a certain position and then fixing the repair ring again so as to ensure that the material passing notch on the wind power pile type foundation is completely staggered with the grouting hole. The repairing ring is simple in structure, high in manufacturing speed and low in cost, and a corresponding repairing device can be quickly manufactured according to a damaged part when the offshore wind power foundation is damaged.
Description
Technical Field
The invention belongs to the technical field of offshore wind power foundations, and particularly relates to a construction method for high-strength solid repair of an offshore wind power pile type foundation.
Background
The energy problem is a key problem for determining the sustainable development of human society and is also an important problem for the social and economic development of China. Offshore wind power has gained acceptance and acceptance in various countries around the world as a renewable green energy source that has formed a mature industrial chain. China now becomes the first big offshore wind power market in the world, and the later operation and maintenance problems of offshore wind power gradually show the importance of China. Offshore wind farms are generally characterized by difficult operation and maintenance, high operation and maintenance cost and high demand for special engineering ships. Under the condition of sporadic wind turbine foundation damage, if the wind turbine foundation cannot be repaired in time, the economic benefit of the offshore wind turbine can be greatly influenced. How to safely and quickly repair the offshore wind power foundation so that the offshore wind power foundation can normally run is a key technical problem.
The existing offshore wind power foundation repair technology is mainly characterized in that the hoop is added to ensure that the bearing capacity of the damaged part cannot reach the limit, but the hoop technology is derived through an offshore oil platform repair technology, and no clear proof is provided for whether the hoop can be applied to offshore wind power foundation repair. In addition, the hoop cannot guarantee the invagination type secondary damage of the damaged part and the influence of the damaged part on other parts, and the protection range is small, so that the device is not suitable for repairing large-range damage. The invention provides a construction method for a high-strength consolidation repairing structure of an offshore wind power pile type foundation, which is used for rapidly repairing the offshore wind power foundation by perforating in a small range and injecting high-strength consolidation slurry into a protection structure.
Disclosure of Invention
In order to make up for the defects of the prior art, the offshore wind power pile type foundation is quickly repaired by opening holes in a small range and injecting high-strength consolidation slurry into the protection structure, so that the interior of the wind power pile type foundation is changed from hollow to solid, and the repaired wind power pile type foundation can be ensured not to generate secondary damage in the follow-up process and further be reinforced.
A construction method for a high-strength reinforcement repair structure of an offshore wind power pile type foundation comprises the following specific construction steps:
s1: the hoisting repair ring is fixed at a position which is not influenced by damage above the damaged part on the wind power pile type foundation, and a grouting hole which is arranged on the repair ring and is used for being matched with a grouting pipeline to grout into the wind power pile type foundation faces towards a construction ship;
s2: using a striking device to break down the wind power pile type foundation at the position corresponding to the grouting hole of the repair ring 1 to form a gap close to the size of the grouting hole;
s3: connecting a high-strength consolidation slurry pipeline to the grouting hole by the construction ship, and pouring high-strength consolidation slurry into the wind power pile type foundation;
s4: pouring the high-strength consolidation slurry until the slurry overflows the grouting hole;
s5: and after grouting is finished, the grouting pipeline is recovered, the repairing ring is fixed again after being rotated for a certain position, and the material passing notch on the wind power pile type foundation is completely staggered from the grouting hole.
Further, the repair ring is fixed on the wind power pile type foundation through a fastener.
Furthermore, one end, far away from the wind power pile type foundation to be repaired, of the grouting hole extends outwards to form a convex diameter used for fixing the grouting pipeline in the repairing process.
Furthermore, the repair ring is of a hoop structure.
Further, the repair ring comprises two semicircular hoops, and joints at two ends of the two semicircular hoops are fixed through fasteners.
Further, the fastener includes a wing plate fixed to the repair ring and a screw assembly or a bolt assembly fixing the wing plate.
Further, an anti-corrosion coating is arranged on the surface of the repair ring.
Compared with the prior art, the invention has the following advantages: (1) The repairing ring structure is simple, the manufacturing speed is high, the cost is low, a corresponding repairing device can be quickly manufactured according to a damaged part when the offshore wind power foundation is damaged, and the repairing ring structure has important significance for quickly recovering the work of an offshore wind turbine; (2) Compared with the traditional hoop repairing, the high-strength consolidation repairing process has higher safety performance, can ensure that the repaired foundation does not generate secondary damage in the subsequent process and further reinforces the wind power foundation, and reduces the average cost of operation and maintenance of the offshore wind power foundation; (3) The high-strength consolidation repairing process has the advantages of high repairing speed on the whole, low construction difficulty, reduction of safety threat caused by long-term stay of offshore construction, and certain guarantee on the safety of offshore wind power construction.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic structural view of a repair ring according to the present invention in a use state;
FIG. 3 is a schematic diagram of a repair loop structure according to the present invention.
In the figure: 1-repairing ring, 2-grouting hole, 21-convex diameter, 3-fastener, 31-wing plate, 4-wind power pile type foundation and 5-damaged part.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1-3, damage portion 5 on wind power pile formula basis 4 is inside sunken destruction, when restoreing damage portion 5, set up restoration ring 1 above damage portion 5 of wind power pile formula basis 4, restoration ring 1 is fixed the back, grout hole 2 on the restoration ring 1 is towards the construction ship in order to guarantee the facility of construction, make wind power pile formula basis 4 inside become solid by cavity through the grout, can ensure that the wind power pile formula basis 4 that is restoreed no longer produces secondary destruction and further consolidates the wind power basis in follow-up.
The specific construction method for the offshore wind power pile type foundation high-strength reinforcing and repairing structure comprises the following steps:
s1: the hanging decoration restoring ring 1 is fixed at a position which is not affected by damage above a damaged part 5 on the wind power pile type foundation 4, and a grouting hole 2 which is arranged on the restoring ring 1 and is used for being matched with a grouting pipeline to grout into the wind power pile type foundation 4 faces towards a construction ship;
s2: using a striking device to puncture the wind power pile type foundation 4 at the position corresponding to the grouting hole 2 of the repair ring 1 to form a gap with the size close to that of the grouting hole 2;
s3: connecting a high-strength consolidation slurry pipeline to the grouting hole 2 by the construction ship, and pouring high-strength consolidation slurry into the wind power pile type foundation 4;
s4: the high-strength consolidation slurry is poured until the slurry overflows the grouting hole 2;
s5: and after grouting is finished, the grouting pipeline is recovered, the repairing ring 1 is fixed again after rotating for a certain position, and the material passing gap on the wind power pile type foundation 4 is completely staggered with the grouting hole 2.
In addition, the slurry is high-strength special slurry with rapid underwater consolidation, and can be connected with the pile leg of the damaged part 5 to form a whole after being poured. In the step S2, the size of the gap must be far smaller than the pile diameter, so that the gap does not have obvious influence on the foundation; the slurry flowing through the grouting hole 2 in the step S4 can be judged according to the grouting pressure variation of the grouting machine, and can also be judged according to whether the grouting hole 2 has the slurry overflow phenomenon.
Specifically, the repair ring 1 is fixed on the wind power pile type foundation 4 through the fastener 3, and the size of the grouting hole 2 in the repair ring 1 is set according to the size of the grouting pipeline and is slightly larger than the grouting pipeline and can clamp the size of the grouting pipeline. The repair ring 1 is preferably of a hoop structure and comprises two semicircular hoops, and joints at two ends of the two semicircular hoops are fixed through fasteners 3; or include two semicircle staple bolts, the one end of two semicircle staple bolts is articulated, and the other end passes through fastener 3 to be fixed. Specifically, set up grout hole 2 on one of them semicircle ring, also can be as required, in order to accelerate the grout speed, all set up grout hole 2 on two semicircle rings. The fastener 3 includes wing plate 31 fixed at the both ends of repairing ring 1 and runs through the screw subassembly or the bolt subassembly that wing plate 31 was used for fixed wing plate 31, for the effect that reaches quick installation, screw subassembly or bolt subassembly adopt no more than three screws or bolts that are used for fixing. The repair ring 1 can be set to other structures as required, and only the grouting hole 2 for grouting needs to be arranged on the repair ring 1. And one end of the grouting hole 2, which is far away from the wind power pile type foundation 4 to be repaired, extends outwards to form a convex diameter 21 which is used for fixing a grouting pipeline in the repairing process. The repairing ring 1 stays on the repaired wind power pile type foundation 4 after the repairing construction is finished, so that the material which is the same as or close to the repaired wind power pile type foundation 4 is selected preferably, and an anticorrosive coating is sprayed on the surface of the repairing ring to prevent the repaired wind power pile type foundation 4 from being damaged.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A construction method for high-strength consolidation and repair of an offshore wind power pile type foundation is characterized by comprising the following specific construction steps:
s1: the hanging decoration compound ring (1) is fixed at a position which is not damaged and influenced above a damaged part (5) on the wind power pile type foundation (4), and a grouting hole (2) which is arranged on the repairing ring (1) and is used for being matched with a grouting pipeline to grout into the wind power pile type foundation (4) faces towards a construction ship;
s2: using a striking device to break down a wind power pile type foundation (4) at the position corresponding to a grouting hole (2) of a repair ring (1) to form a gap with the size close to that of the grouting hole (2);
s3: connecting a high-strength consolidation slurry pipeline to the grouting hole (2) by the construction ship, and pouring high-strength consolidation slurry into the wind-power pile type foundation (4);
s4: the high-strength consolidation slurry is poured until the slurry overflows the grouting hole (2);
s5: and after grouting, recovering the grouting pipeline, rotating the repair ring (1) for a certain position and then fixing again so as to ensure that the material passing notch on the wind power pile type foundation (4) is completely staggered with the grouting hole (2).
2. The construction method for high-strength reinforcement repair of offshore wind power pile foundation according to claim 1, characterized in that the repair ring (1) is fixed on the wind power pile foundation (4) through a fastener (3).
3. Construction method for offshore wind power pile foundation high-strength consolidation repair according to claim 1, characterized in that the grouting hole (2) extends out of the end of the wind power pile foundation (4) to be repaired to form a convex diameter (21) for fixing the grouting pipe during the repair process.
4. The construction method for high-strength concrete repair of offshore wind power pile foundation according to claim 1 or 2, characterized in that the repair ring (1) is a hoop structure.
5. The construction method for high-strength reinforcement repair of offshore wind power pile foundation according to claim 4, characterized in that the repair ring (1) comprises two semicircular hoops, and joints of two ends of the two semicircular hoops are fixed by the fasteners (3).
6. Construction method for offshore wind power pile foundation high-strength reinforcement repair according to claim 5, characterized in that the fastener (3) comprises a wing plate (31) fixed on the repair ring (1) and a screw assembly or a bolt assembly for fixing the wing plate (31).
7. The construction method for high-strength reinforcement repair of offshore wind power pile foundation according to claim 5, characterized in that the surface of the repair ring (1) is provided with an anticorrosive coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211099740.6A CN115492151A (en) | 2022-09-09 | 2022-09-09 | Construction method for high-strength consolidation repair of offshore wind power pile type foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211099740.6A CN115492151A (en) | 2022-09-09 | 2022-09-09 | Construction method for high-strength consolidation repair of offshore wind power pile type foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115492151A true CN115492151A (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211099740.6A Pending CN115492151A (en) | 2022-09-09 | 2022-09-09 | Construction method for high-strength consolidation repair of offshore wind power pile type foundation |
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| CN (1) | CN115492151A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202718097U (en) * | 2012-06-21 | 2013-02-06 | 上海中技桩业股份有限公司 | Rounded-triangular and solid post-grouted concrete pile |
| CN106592660A (en) * | 2016-12-21 | 2017-04-26 | 神华集团有限责任公司 | Draught fan foundation restoration method |
| CN210151599U (en) * | 2019-06-03 | 2020-03-17 | 南京博瑞吉工程技术有限公司 | Hollow slab beam |
| CN212612443U (en) * | 2020-07-07 | 2021-02-26 | 宁波中淳高科股份有限公司 | Staple bolt formula benefit stake device |
| CN114657977A (en) * | 2022-02-24 | 2022-06-24 | 中建一局集团第二建筑有限公司 | Prestressed concrete tubular pile tip crack reinforcing and strengthening device |
| CN114808956A (en) * | 2022-05-14 | 2022-07-29 | 浙江大学 | Offshore wind power steel pipe pile reinforcing and repairing construction method |
| CN218952166U (en) * | 2022-09-09 | 2023-05-02 | 浙江大学 | Be used for marine wind-powered electricity generation stake formula basis high strength knot repair structure |
-
2022
- 2022-09-09 CN CN202211099740.6A patent/CN115492151A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202718097U (en) * | 2012-06-21 | 2013-02-06 | 上海中技桩业股份有限公司 | Rounded-triangular and solid post-grouted concrete pile |
| CN106592660A (en) * | 2016-12-21 | 2017-04-26 | 神华集团有限责任公司 | Draught fan foundation restoration method |
| CN210151599U (en) * | 2019-06-03 | 2020-03-17 | 南京博瑞吉工程技术有限公司 | Hollow slab beam |
| CN212612443U (en) * | 2020-07-07 | 2021-02-26 | 宁波中淳高科股份有限公司 | Staple bolt formula benefit stake device |
| CN114657977A (en) * | 2022-02-24 | 2022-06-24 | 中建一局集团第二建筑有限公司 | Prestressed concrete tubular pile tip crack reinforcing and strengthening device |
| CN114808956A (en) * | 2022-05-14 | 2022-07-29 | 浙江大学 | Offshore wind power steel pipe pile reinforcing and repairing construction method |
| CN218952166U (en) * | 2022-09-09 | 2023-05-02 | 浙江大学 | Be used for marine wind-powered electricity generation stake formula basis high strength knot repair structure |
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