CN104179190A - Composite pile foundation for offshore wind power and construction method thereof - Google Patents
Composite pile foundation for offshore wind power and construction method thereof Download PDFInfo
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- CN104179190A CN104179190A CN201410449787.XA CN201410449787A CN104179190A CN 104179190 A CN104179190 A CN 104179190A CN 201410449787 A CN201410449787 A CN 201410449787A CN 104179190 A CN104179190 A CN 104179190A
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Abstract
The invention discloses a composite pile foundation for offshore wind power. The composite pile foundation comprises at least three composite piles (10) and a spider (19). Each composite pile is divided into an upper pile section (11) and a lower pile section (12), the upper pile section (11) is a steel pipe pile or a prestress concrete pipe pile at least partially wrapped by a steel pipe, and the lower pile section (12) is a prestress concrete pipe pile. Steel leg drums (20) with the number corresponding to that of the upper pile sections (11) are arranged on the spider (19), and each upper pile section (11) penetrates a corresponding steel leg drum to be fixed with the steel leg drum. A construction method of the composite pile foundation for offshore wind power is further disclosed. Compared with common large-diameter steel pipe piles, the composite pile foundation has the advantages of being reasonable in structure, better in pile foundation selectivity and capable of giving full play to advantages of the steel pipe piles and the prestress concrete pipe piles and saving steel materials. Meanwhile, the pile foundation is low in construction device requirement, wide in selectivity, small in offshore construction difficulty and better in total economy.
Description
Technical field
The invention belongs to the technical field on ocean engineering basis, be specifically related to a kind of composite pile foundation for offshore wind farm and construction method thereof.
Background technology
Marine engineering is because of construction at sea, and operating mode is more severe, has can the engineering time shortly, and difficulty of construction is large, is subject to the features such as the effect of natural conditions such as weather sea situation are huge.
At present, steel pipe pile is particularly one of conventional base_structure types in offshore wind farm engineering of ocean engineering, there is simple in structure, stressed clear and definite, easy to make, resistance to compression, tension, the advantage such as anti-bending strength is good, piling construction speed is fast, be applicable to the engineering region that Soft Soil Layer is thicker.But steel pipe pile has the following disadvantages: rolled steel dosage is many, and cost is high, and the diameter of single stake is large, and weight is large, and construction equipment requires high, and operating expenses is high; In addition because pile foundation suffered moment of flexure below mud face reduces gradually, after certain depth, the bending resistance surplus capacity of steel pipe pile increases gradually, and therefore adopting whole steel pipe pile foundation to seem relatively wastes.Prestressing concrete pipe pile is widely used in port works, can factory process, and pile quality is high, compressive property is good, cost is low, but because its maximum gauge can only reach 1.5 meters at present, and its tension, anti-injection, bending resistance are slightly poor and temporarily fail for offshore wind farm engineering.
Above-mentioned discussion content object be to reader introduce may to below by the various aspects of the technology relevant various aspects of the present invention that are described and/or advocate, believe that this discussion content contributes to provide background information for reader, to be conducive to understanding better various aspects of the present invention, therefore, should be appreciated that it is to read these with this angle to discuss, instead of admit prior art.
Summary of the invention
The object of the invention is to avoid deficiency of the prior art and a kind of composite pile foundation for offshore wind farm and construction method thereof are provided, its rolled steel dosage is few, low to construction equipment requirement, construction is convenient, macroeconomy is good.
Object of the present invention is achieved through the following technical solutions:
A kind of composite pile foundation for offshore wind farm is provided, comprise at least three composite piles, spider, every composite pile is divided into epimere stake and hypomere stake, described epimere stake is the prestressing concrete pipe pile of steel pipe pile or at least part of outside steel pipe, hypomere stake is prestressing concrete pipe pile, on described spider, be provided with the steel pin cylinder corresponding with epimere stake quantity, every epimere stake is passed a steel pin cylinder and fixes with steel pin cylinder.
Wherein, between described steel pin cylinder and epimere stake, form annular space, perfusion mortar in annular space.
Wherein, described epimere stake is steel pipe pile, is provided with the shear connector coordinating with mortar on steel pipe pile outer wall.
Wherein, described epimere stake is steel pipe pile, and the lower end of described epimere stake is fixedly connected with by flange with the upper end of hypomere stake.
Wherein, described epimere stake is the prestressing concrete pipe pile of full section outside steel pipe, and prestressing concrete pipe pile and hypomere stake in described epimere stake are structure as a whole.
Wherein, on the outside steel pipe of described epimere stake, be provided with the shear connector coordinating with mortar.
Wherein, described every composite pile is made up of two above son stakes in groups.
Wherein, the inner chamber of described prestressing concrete pipe pile is all or part of is provided with pre-buried interior edge steel pipe.
For a construction method for the composite pile foundation of offshore wind farm, comprise the steps:
S1, make composite pile and with the spider of steel pin cylinder in factory process, every composite pile from stake push up to the following certain limit of mud face be epimere stake above, under it is hypomere stake, described epimere stake is the prestressing concrete pipe pile of steel pipe pile or at least part of outside steel pipe, and hypomere stake is prestressing concrete pipe pile;
S2, seabed is flattened, utilize crane ship sinking spider, the pre-anti-sinking of taking measures, and make the top layer of spider exceed working water level;
S3, utilize the top layer of spider as Pile Installation Platform, and utilize steel pin cylinder to carry out the piling construction of composite pile as location and guiding device;
S4, utilize composite pile for fulcrum, the position of leveling spider temporary fixed to composite pile and spider;
S5, the annular space perfusion mortar forming between steel pin cylinder and composite pile, make composite pile be fixedly connected with spider;
S6, the superstructure that offshore wind power foundation is installed at the top of spider.
Wherein, after S3 step, also composite pile is carried out to quality examination, if composite pile body quality examination defectiveness carries out filling pile construction reinforcement or remedies at composite pile inner chamber.
Beneficial effect of the present invention: by replace partial prestressing concrete pile tube with steel pipe pile, or at partial prestressing concrete pile tube outside parcel steel pipe, strengthen local tension and the anti-bending strength of pile foundation, can give full play to prestressing concrete pipe pile compressive property good, overcome its tension, the poor shortcoming of flexing resistance simultaneously, thereby improve the range of application of prestressing concrete pipe pile.Use this composite pile foundation, in the time that epimere stake adopts steel pipe pile, hypomere stake to adopt prestressing concrete pipe pile scheme, can give full play to steel pipe pile and prestressing concrete pipe pile advantage separately, saving steel, reduces investment outlay; In the time that epimere stake adopts the composite construction of the prestressing concrete pipe pile with steel pipe outer wrapping, can increase tension and the anti-bending strength of local prestressing concrete pipe pile, more can save steel.The present invention is compared with common large diameter steel pipe pile, more reasonable structure, the alternative of pile foundation is larger, can give full play to steel pipe pile and prestressing concrete pipe pile advantage separately, saving steel, the construction equipment of pile foundation requirement is simultaneously low, alternative is wider, and the difficulty of offshore construction is little, macroeconomy is better, in ocean engineering, is with a wide range of applications.
Brief description of the drawings
The invention will be further described to utilize accompanying drawing, but embodiment in accompanying drawing does not form any limitation of the invention, for those of ordinary skill in the art, is not paying under the prerequisite of creative work, can also obtain according to the following drawings other accompanying drawing.
Fig. 1 is the structural representation for the composite pile foundation of offshore wind farm.
Fig. 2 is A-A schematic cross-section in Fig. 1.
Fig. 3 is B-B schematic cross-section in Fig. 1.
Fig. 4 is the structural representation that adopts the composite pile of one group of two stake.
Fig. 5 is epimere stake C-C schematic cross-section in Fig. 4 while being steel pipe pile.
Fig. 6 is D-D schematic cross-section in Fig. 4.
Fig. 7 is that epimere stake is the structural representation of steel pipe pile.
Fig. 8 is that epimere stake is while being steel pipe pile and the syndeton schematic diagram of hypomere stake.
Fig. 9 is epimere stake C-C schematic cross-section in Fig. 4 while being the prestressing concrete pipe pile of outside steel pipe.
Figure 10 is that epimere stake is the structural representation of the prestressing concrete pipe pile of outside steel pipe.
Figure 11 is that epimere stake is while being the prestressing concrete pipe pile of outside steel pipe and the syndeton schematic diagram of hypomere stake.
Detailed description of the invention
In order to make those skilled in the art understand better technical scheme of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, it should be noted that, in the situation that not conflicting, the feature in the application's embodiment and embodiment can combine mutually.
Core of the present invention is to provide a kind of composite pile foundation for offshore wind farm and construction method thereof, and it is rational in infrastructure, selection is wider, construction equipment requirement is low, macroeconomy is good.
As shown in Figure 1 to 11, for the composite pile foundation of offshore wind farm, comprise at least three composite piles 10, spider 19, composite pile 10 quantity in figure are four, and spider 19 upper stratas are for fixing blower fan tower barrel.Every composite pile 10 from stake push up to the following certain limit of mud face be epimere stake 11 above, under it is hypomere stake 12.On described spider 19, be provided with the steel pin cylinder 20 corresponding with epimere stake 11 quantity, every epimere stake 11 is passed a steel pin cylinder 20 and fixes with steel pin cylinder 20.
As preferred embodiment, between described steel pin cylinder 20 and epimere stake 11, form annular space, in annular space, pour into high-strength mortar 18, between steel pin cylinder 20 and epimere stake 11, be fixedly connected with by mortar 18.Carry out the connection of composite pile 10 and spider 19 by mortar 18, easy construction, is connected firmly.
As preferred embodiment, the inner chamber of described prestressing concrete pipe pile is all or part of is provided with pre-buried interior edge steel pipe, like this, can increase tension and the anti-bending strength of prestressing concrete pipe pile.
As preferred embodiment, described every composite pile 10 is made up of two above son stakes in groups, a composite pile 10 of son stake composition of more than two small diameter, and its processing and manufacturing is comparatively simple, escapable cost.
As a kind of embodiment, as shown in Fig. 4 to 8, described epimere stake 11 is steel pipe pile, and hypomere stake 12 is prestressing concrete pipe pile.On described epimere stake 11 outer walls, be provided with the shear connector 17 coordinating with mortar 18, can make like this connection of composite pile 10, mortar 18, steel pin cylinder 20 more firm.The upper end of the lower end of described epimere stake 11 and hypomere stake 12 is fixedly connected with by flange 21.Epimere stake 11 is connected by flange 21 with hypomere stake 12, and it is easy to assembly, stable connection.The epimere stake of the present embodiment adopts steel pipe pile, hypomere stake to adopt prestressing concrete pipe pile, can give full play to steel pipe pile and prestressing concrete pipe pile advantage separately, and saving steel, reduces investment outlay.
As another kind of embodiment, as shown in Fig. 4,9 to 11, described epimere stake 11 is the prestressing concrete pipe pile 11b of outside steel pipe 11a, and prestressing concrete pipe pile and hypomere stake are structure as a whole.Prestressing concrete pipe pile 11b is preferably complete section of outside steel pipe 11a, can certainly segment section outside steel pipe 11a, and the position outside steel pipe 11a being for example only connected with steel pin cylinder 20, can increase tension and anti-bending strength with steel pin cylinder 20 connecting portions like this.In the time making, epimere stake 11 and hypomere stake 12 prestressing concrete pipe pile formed by integrally casting moulding, put outside steel pipe at epimere when building.Similar to a upper embodiment, on outside steel pipe 11a outer wall, be provided with the shear connector 17 coordinating with mortar 18, can make like this connection of composite pile 10, mortar 18, steel pin cylinder 20 more firm.The epimere stake of the present embodiment adopts the composite construction of the prestressing concrete pipe pile with steel pipe outer wrapping, can increase tension and the anti-bending strength of local prestressing concrete pipe pile, more can save steel.
To sum up, the present invention is compared with common large diameter steel pipe pile, more reasonable structure, the alternative of pile foundation is larger, can give full play to steel pipe pile and prestressing concrete pipe pile advantage separately, saving steel, the construction equipment of pile foundation requirement is simultaneously low, alternative is wider, the difficulty of offshore construction is little, and macroeconomy is better, in ocean engineering, is with a wide range of applications.
In order to implement the composite pile foundation for offshore wind farm as shown in Fig. 1 to 11, the embodiment of the present invention also provides a kind of construction method, comprises the steps:
S1, make composite pile 10 and with the spider 19 of steel pin cylinder 20 in factory process, every composite pile 10 from stake push up to the following certain limit of mud face be epimere stake 11 above, under it is hypomere stake 12, described epimere stake 11 is the prestressing concrete pipe pile of steel pipe pile or at least part of outside steel pipe, and hypomere stake 12 is prestressing concrete pipe pile;
S2, seabed is flattened, utilize crane ship sinking spider 19, the pre-anti-sinking of taking measures, and make the top layer of spider 19 exceed working water level;
S3, utilize the top layer of spider 19 as Pile Installation Platform, and utilize steel pin cylinder 20 to carry out the piling construction of composite pile 10 as location and guiding device;
S4, utilize composite pile 10 for fulcrum, accurately the position of leveling spider 19 temporary fixed to composite pile 10 and spider 19;
S5, the annular space perfusion mortar 18 forming between steel pin cylinder 20 and composite pile 10, make composite pile 10 be fixedly connected with spider 19;
S6, the superstructure that offshore wind power foundation is installed at the top of spider 19.
Wherein, after S3 step, can also carry out quality examination to composite pile, if composite pile body quality examination defectiveness carries out filling pile construction reinforcement or remedies at composite pile 10 inner chambers.
In description above, set forth a lot of details so that fully understand the present invention, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, can not be interpreted as limiting the scope of the invention.
In a word; although the present invention has exemplified above-mentioned preferred embodiment, should illustrate, although those skilled in the art can carry out various variations and remodeling; unless such variation and remodeling have departed from scope of the present invention, otherwise all should be included in protection scope of the present invention.
Claims (10)
1. the composite pile foundation for offshore wind farm, it is characterized in that: comprise at least three composite piles (10), spider (19), every composite pile (10) is divided into epimere stake (11) and hypomere stake (12), described epimere stake (11) is the prestressing concrete pipe pile of steel pipe pile or at least part of outside steel pipe, hypomere stake (12) is prestressing concrete pipe pile, on described spider (19), be provided with the steel pin cylinder (20) corresponding with epimere stake (11) quantity, every epimere stake (11) is passed a steel pin cylinder (20) and is fixed with steel pin cylinder (20).
2. the composite pile foundation for offshore wind farm according to claim 1, is characterized in that: between described steel pin cylinder (20) and epimere stake (11), form annular space, perfusion mortar in annular space (18).
3. the composite pile foundation for offshore wind farm according to claim 2, is characterized in that: described epimere stake (11) is steel pipe pile, is provided with the shear connector (17) coordinating with mortar (18) on steel pipe pile outer wall.
4. the composite pile foundation for offshore wind farm according to claim 1, is characterized in that: described epimere stake (11) is steel pipe pile, and the upper end of the lower end of described epimere stake (11) and hypomere stake (12) is fixedly connected with by flange (21).
5. the composite pile foundation for offshore wind farm according to claim 2, it is characterized in that: described epimere stake (11) is the prestressing concrete pipe pile of full section outside steel pipe, and the prestressing concrete pipe pile in described epimere stake (11) and hypomere stake (12) are structure as a whole.
6. the composite pile foundation for offshore wind farm according to claim 5, is characterized in that: on the outside steel pipe of described epimere stake (11), be provided with the shear connector (17) coordinating with mortar (18).
7. according to the composite pile foundation for offshore wind farm described in any one in claim 1 to 6, it is characterized in that: described every composite pile (10) is made up of two above son stakes in groups.
8. according to the composite pile foundation for offshore wind farm described in any one in claim 1 to 6, it is characterized in that: the inner chamber of described prestressing concrete pipe pile is all or part of is provided with pre-buried interior edge steel pipe.
9. for a construction method for the composite pile foundation of offshore wind farm, it is characterized in that, comprise the steps:
S1, make composite pile (10) and with the spider (19) of steel pin cylinder (20) in factory process, every composite pile (10) is divided into epimere stake (11) and hypomere stake (12), described epimere stake (11) is the prestressing concrete pipe pile of steel pipe pile or at least part of outside steel pipe, and hypomere stake (12) is prestressing concrete pipe pile;
S2, seabed is flattened, utilize crane ship sinking spider (19), the pre-anti-sinking of taking measures, and make the top layer of spider (19) exceed working water level;
S3, utilize the top layer of spider (19) as Pile Installation Platform, and utilize steel pin cylinder (20) to carry out the piling construction of composite pile (10) as location and guiding device;
S4, to utilize composite pile (10) be fulcrum, the position of leveling spider (19) temporary fixed to composite pile (10) and spider (19);
S5, the annular space perfusion mortar (18) forming between steel pin cylinder (20) and composite pile (10), make composite pile (10) be fixedly connected with spider (19);
S6, the superstructure that offshore wind power foundation is installed at the top of spider (19).
10. the construction method of the composite pile foundation for offshore wind farm according to claim 9, it is characterized in that: after S3 step, also composite pile is carried out to quality examination, if composite pile body quality examination defectiveness carries out filling pile construction reinforcement or remedies at composite pile (10) inner chamber.
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| CN201410449787.XA CN104179190A (en) | 2014-09-05 | 2014-09-05 | Composite pile foundation for offshore wind power and construction method thereof |
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| CN201410449787.XA CN104179190A (en) | 2014-09-05 | 2014-09-05 | Composite pile foundation for offshore wind power and construction method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088957A (en) * | 2015-07-23 | 2015-11-25 | 中铁港航局集团有限公司 | Construction method for underwater reinforced concrete composite pile of cast-in-situ support of concrete ballast box beam of cable-stayed bridge |
| CN106013212A (en) * | 2016-07-25 | 2016-10-12 | 福建永福电力设计股份有限公司 | Offshore wind turbine tower foundation structure and installation method |
| CN106320366A (en) * | 2016-09-23 | 2017-01-11 | 中交第三航务工程局有限公司宁波分公司 | Construction method for foundation of ocean tidal current energy generator set |
| CN111074926A (en) * | 2019-12-31 | 2020-04-28 | 中国电建集团华东勘测设计研究院有限公司 | Offshore wind power enhanced single-pile foundation and construction method thereof |
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| CN204040054U (en) * | 2014-09-05 | 2014-12-24 | 熊翱 | For the composite pile foundation of offshore wind farm |
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| CN201007003Y (en) * | 2007-02-27 | 2008-01-16 | 王伟明 | Reinforced concrete compounded pile |
| KR101116389B1 (en) * | 2011-08-05 | 2012-02-22 | 오성남 | Composit pile combined steel tubular pile and concrete pile reinforced with connecting structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105088957A (en) * | 2015-07-23 | 2015-11-25 | 中铁港航局集团有限公司 | Construction method for underwater reinforced concrete composite pile of cast-in-situ support of concrete ballast box beam of cable-stayed bridge |
| CN106013212A (en) * | 2016-07-25 | 2016-10-12 | 福建永福电力设计股份有限公司 | Offshore wind turbine tower foundation structure and installation method |
| CN106320366A (en) * | 2016-09-23 | 2017-01-11 | 中交第三航务工程局有限公司宁波分公司 | Construction method for foundation of ocean tidal current energy generator set |
| CN106320366B (en) * | 2016-09-23 | 2019-04-02 | 中交第三航务工程局有限公司宁波分公司 | The construction method on Ocean Tidal Current Energy generating set basis |
| CN111074926A (en) * | 2019-12-31 | 2020-04-28 | 中国电建集团华东勘测设计研究院有限公司 | Offshore wind power enhanced single-pile foundation and construction method thereof |
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Application publication date: 20141203 |