CN102852155A - Composite pile foundation - Google Patents

Composite pile foundation Download PDF

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Publication number
CN102852155A
CN102852155A CN2012102741964A CN201210274196A CN102852155A CN 102852155 A CN102852155 A CN 102852155A CN 2012102741964 A CN2012102741964 A CN 2012102741964A CN 201210274196 A CN201210274196 A CN 201210274196A CN 102852155 A CN102852155 A CN 102852155A
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CN
China
Prior art keywords
pile foundation
pile
foundation
linkage
connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012102741964A
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Chinese (zh)
Inventor
乐丛欢
丁红岩
练继建
张浦阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin University
Original Assignee
Tianjin University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin University filed Critical Tianjin University
Priority to CN2012102741964A priority Critical patent/CN102852155A/en
Publication of CN102852155A publication Critical patent/CN102852155A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a composite pile foundation. Tube-shaped connection sections are respectively arranged at the center of the top and the center of the bottom of a truss of a four-foot guiding pipe frame foundation, single-pile foundations are inserted on an upper connection section and a lower connection section and fixedly connected with the connection sections, and the connection can be specifically in a welding mode, in a grouting mode through a shear connector, in an elastic mode through an elastic member or the like. The composite pile foundation fully takes advantages of specific stress of the single-pile foundations, strong application capacity to a soil layer, convenient construction, good horizontal bearing capacity of the four-foot guiding pipe frame foundation and the like, is greatly improved in integral rigidity, horizontal load resisting, vertical load resisting and bending moment capacity compared with a single single-pile foundation or four-foot guiding pipe frame foundation, particularly changes the stress mode of the single-pile structure, effectively reduces bending moment load on the foundations caused by fan load, reduces horizontal displacement of a wind power structure and accordingly reduces pile length, pile diameter, wall thickness and penetration depth, remarkably reduces material cost, and is simple in construction process.

Description

A kind of composite pile foundation
Technical field
The present invention relates to the foundation structure of building field, specifically, relate to a kind of pile foundation.
Background technology
The offshore wind farm structure belongs to vertical load less, marine tall and slender structure that moment of flexure that horizontal loading produces is larger, and resistance to capsizing requires high.
Single-pile foundation structure is common offshore structures base form, and particularly wind-powered electricity generation field at sea is most widely used with marine of Europe, and it is simple in structure, mechanical behavior is clear and definite, is used for the following wind energy conversion system better economy of 1.5MW.Yet, because single-pile foundation exists that resistance to capsizing is poor, level is to weakness such as displacement are large, along with the offshore wind turbine single-machine capacity is increased to 3MW, 5MW or larger, must cause diameter, wall thickness and the depth of penetration of single-pile foundation sharply to increase, cause the marine guidance piling constructional difficulties, construction cost significantly raises.
Three tripods, many pile leaders frame, High-Rise Pile Cap Foundations can disperse load effectively by different modes, improve resistance to capsizing, but all structure and complicated construction technique, sea conditions are required high, cause long construction period, construction cost high.
Summary of the invention
What the present invention will solve is above-mentioned technical problem of the prior art, a kind of novel composite pile foundation is provided, with single-pile foundation and the effectively combination of four pin jackets basis, bring into play its advantage separately, reach reduce that stake is long, the purpose of stake footpath and wall thickness, and then reduce offshore construction cost and material cost.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
A kind of composite pile foundation, comprise four pin jackets basis, the linkage section that the truss top center on described four pin jacket bases and bottom centre are respectively arranged with tubular, two described linkage sections are fitted with single-pile foundation up and down, and described single-pile foundation is fixedly connected with described linkage section.
The external diameter of described single-pile foundation is less than described linkage section internal diameter 0.1 ~ 60cm.
Described single-pile foundation and the welding of described linkage section.
Described single-pile foundation is connected by shear connector grouting with described linkage section.
Be provided with elastic body between described single-pile foundation and the described linkage section.
The height of described linkage section is 1 ~ 3m.
The invention has the beneficial effects as follows:
Composite pile foundation of the present invention is the new structure that single-pile foundation and four pin jacket bases are combined, and all improves a lot in the single-pile foundation that its integral rigidity, anti-horizontal loading, anti-vertical load and moment of flexure ability are more independent or four pin jacket bases.
Composite pile foundation takes full advantage of stressed clear and definite, the advantage such as the applicable ability of soil layer is strong, easy construction and four pin jacket foundation level supporting capacitys are good of single-pile foundation: owing to the horizontal restraint on four pin jacket bases, so that submarine surface weak soil place can become the horizontal restraint of single-pile foundation, greatly improved the horizontal bearing capacity of composite pile foundation; And four pin jacket bases link to each other with single-pile foundation top, the build-in point of single-pile foundation in soft foundation moved, change single pile structure stress pattern, effectively realize reducing the moment load that fan loads produces the basis, reduce the horizontal movement of wind-powered electricity generation structure, thereby the stake that reduces pile foundation is long, stake footpath, wall thickness and depth of penetration, and material cost is significantly reduced, and construction technology is also more simple.
Description of drawings
Fig. 1 is the structural representation of composite pile foundation provided by the present invention;
Fig. 2 is the A-A sectional drawing of Fig. 1.
Among the figure: 1, four pin jacket basis; 2, single-pile foundation; 3, linkage section; 4, elastic body.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, hereby exemplify following examples, and cooperate accompanying drawing to be described in detail as follows:
As depicted in figs. 1 and 2, present embodiment has disclosed a kind of composite pile foundation, mainly comprises four pin jacket bases 1, single-pile foundation 2 and linkage section 3.
Four pin jacket bases 1 comprise truss and four piles, and the weight of truss is 350t; The pile diameter is 1.5m, and wall thickness is 20mm, and length is 15m, and four pile spacings are 30m.
Single-pile foundation 2 is that diameter is 3m, and wall thickness is 30mm, and length is the steel cylindrical structure of 30m.
Linkage section 3 is that two external diameters are 3.2m, highly are the steel cylindrical structure of 1.5m, is fixedly installed on respectively top and the bottom of the truss on four pin jacket bases 1.
Single-pile foundation 2 and four pin jacket bases 1 are combined as a whole by linkage section 3.Single-pile foundation 2 inserts up and down among two linkage sections 3, and the external diameter of single-pile foundation 2 is generally less than linkage section 3 cylindrical structure internal diameters 0.1 ~ 60cm.Fixed form between single-pile foundation 2 and the linkage section 3 can be to be rigidly connected, as shear connector grouting connection, welding are set; Also can be that elasticity connects, such as the slit of filling between single-pile foundation 2 and the linkage section 3 with the elastic bodys such as rubber pad 4.
The job practices of the composite pile foundation of present embodiment is as follows:
Up and down two linkage sections 3 weld with four pin jackets basis 1 first, then the four pin jacket bases 1 of constructing, squeeze into single-pile foundation 2 by two linkage sections 3 up and down again, at last with the slit between linkage section 3 and the single-pile foundation 2 by being rigidly connected or elasticity is connected and processes.
Although the above is described the preferred embodiments of the present invention by reference to the accompanying drawings; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away from the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, these all belong within protection scope of the present invention.

Claims (6)

1. composite pile foundation, it is characterized in that, comprise four pin jackets basis, the linkage section that the truss top center on described four pin jacket bases and bottom centre are respectively arranged with tubular, two described linkage sections are fitted with single-pile foundation up and down, and described single-pile foundation is fixedly connected with described linkage section.
2. a kind of composite pile foundation according to claim 1 is characterized in that, the external diameter of described single-pile foundation is less than described linkage section internal diameter 0.1 ~ 60cm.
3. a kind of composite pile foundation according to claim 1 is characterized in that, described single-pile foundation and the welding of described linkage section.
4. a kind of composite pile foundation according to claim 1 is characterized in that, described single-pile foundation is connected by shear connector grouting with described linkage section.
5. a kind of composite pile foundation according to claim 1 is characterized in that, is provided with elastic body between described single-pile foundation and the described linkage section.
6. a kind of composite pile foundation according to claim 1 is characterized in that, the height of described linkage section is 1 ~ 3m.
CN2012102741964A 2012-08-01 2012-08-01 Composite pile foundation Pending CN102852155A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012102741964A CN102852155A (en) 2012-08-01 2012-08-01 Composite pile foundation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012102741964A CN102852155A (en) 2012-08-01 2012-08-01 Composite pile foundation

Publications (1)

Publication Number Publication Date
CN102852155A true CN102852155A (en) 2013-01-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN102852155A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103835305A (en) * 2014-02-26 2014-06-04 湘电风能(福建)有限公司 Novel guide tube frame
CN104631252A (en) * 2015-02-15 2015-05-20 浙江大学 Method for controlling cumulative settlement of pile-supported subgrade strengthening pile
CN112081133A (en) * 2020-08-06 2020-12-15 中国科学院力学研究所 Base fixing structure of offshore wind turbine and base installation method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136482A (en) * 1983-03-18 1984-09-19 Heerema Engineering Offshore tower structure
DE102004042066A1 (en) * 2004-08-31 2006-03-16 Bard Engineering Gmbh Foundation platform for offshore wind turbine in sea depths of 30 to 50 metres
CN200978431Y (en) * 2006-12-13 2007-11-21 中国水利水电科学研究院 Large-scale fan combined pile foundation adapted for silt layer seabed
CN102322074A (en) * 2011-06-30 2012-01-18 天津大学 A kind of jacket foundation structure and job practices
CN102373711A (en) * 2010-08-20 2012-03-14 希尔格福特系统和设备股份有限公司 Base structure for off-shore wind turbines and method for building the same
CN102535510A (en) * 2012-02-27 2012-07-04 广东明阳风电产业集团有限公司 Basic mounting method of offshore fan jacket and integrated jacket device
CN202323978U (en) * 2011-12-08 2012-07-11 华锐风电科技(集团)股份有限公司 Base components for offshore wind power set installation

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136482A (en) * 1983-03-18 1984-09-19 Heerema Engineering Offshore tower structure
DE102004042066A1 (en) * 2004-08-31 2006-03-16 Bard Engineering Gmbh Foundation platform for offshore wind turbine in sea depths of 30 to 50 metres
CN200978431Y (en) * 2006-12-13 2007-11-21 中国水利水电科学研究院 Large-scale fan combined pile foundation adapted for silt layer seabed
CN102373711A (en) * 2010-08-20 2012-03-14 希尔格福特系统和设备股份有限公司 Base structure for off-shore wind turbines and method for building the same
CN102322074A (en) * 2011-06-30 2012-01-18 天津大学 A kind of jacket foundation structure and job practices
CN202323978U (en) * 2011-12-08 2012-07-11 华锐风电科技(集团)股份有限公司 Base components for offshore wind power set installation
CN102535510A (en) * 2012-02-27 2012-07-04 广东明阳风电产业集团有限公司 Basic mounting method of offshore fan jacket and integrated jacket device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103835305A (en) * 2014-02-26 2014-06-04 湘电风能(福建)有限公司 Novel guide tube frame
CN103835305B (en) * 2014-02-26 2016-10-05 湘电风能(福建)有限公司 A kind of new catheter frame
CN104631252A (en) * 2015-02-15 2015-05-20 浙江大学 Method for controlling cumulative settlement of pile-supported subgrade strengthening pile
CN112081133A (en) * 2020-08-06 2020-12-15 中国科学院力学研究所 Base fixing structure of offshore wind turbine and base installation method
CN112081133B (en) * 2020-08-06 2021-06-25 中国科学院力学研究所 Base fixing structure of offshore wind turbine and base installation method

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Application publication date: 20130102