CN103243734B - Connecting component for cylindrical foundation and single pile - Google Patents
Connecting component for cylindrical foundation and single pile Download PDFInfo
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- CN103243734B CN103243734B CN201310166815.2A CN201310166815A CN103243734B CN 103243734 B CN103243734 B CN 103243734B CN 201310166815 A CN201310166815 A CN 201310166815A CN 103243734 B CN103243734 B CN 103243734B
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Abstract
The invention discloses a connecting component for a cylindrical foundation and a single pile. A contact part of the inner side of a cylindrical foundation top cover and a pile foundation is set into an arc contact for spherical contact with the pile foundation. The surface of the arc contact is polished to guarantee smoothness. A reinforced steel ring is disposed at a single pile contact part and in the single pile. The reinforced ring is integrated with the single pile by means of welding. The arc contact is in close contact with the single pile contact part, and load is transmitted through the contact part. Due to the fact that the arc contact, for being connected with the pile foundation, is disposed on the inner side of the cylindrical foundation top cover, contact area of the single pile and the cylindrical foundation is lowered greatly, main horizontal load transmission between the pile foundation and a negative pressure cylinder, bending moment transmission is lowered evidently, buckling failure, caused by large bending moment, of the cylindrical foundation top cover, composite single pile foundation stress is more clear, and design difficulty in cylindrical foundation top cover strengthening is facilitated.
Description
Technical field
The present invention relates to offshore wind farm compound single-pile foundation system, more particularly, relate to a kind of connecting elements of cylindrical foundation and single pile in offshore wind farm compound single-pile foundation, by the mode of arc point cantact, realize mainly transmitting horizontal force between compound cylindrical foundation and single pile, reduce the transmission of moment of flexure.
Background technology
Offshore wind power foundation type mainly contains four kinds, pile type foundation, gravity type foundation, caisson type foundation and floatation type basis.What current application was maximum is traditional pile foundation, and this basis manufactures simple, and prepare without the need to doing any sea bed, be applicable to the waters that sea bed is comparatively hard, the depth of water is less than 30m, be particularly useful for shallow water area, its economic worth can well be embodied.But traditional single-pile foundation exists larger problem in the application, the vertical load suffered by single pile blower fan structure is made up of the gravity of basis and total, and side friction and the end resistance of single-pile foundation are larger, and its vertical bearing capacity easily meets the demands.Relative to vertical load, the horizontal bending moment suffered by single pile blower fan structure is very large, causes its horizontal displacement larger.In order to level of control displacement, traditional single-pile foundation can only take the method increasing stake footpath or increase single pile embedded depth, this method not only causes single-pile foundation vertical bearing capacity far away higher than needed for basic reality, return piling construction to have higher requirement, the cost of pile foundation is raised, difficulty of construction strengthens, and construction period increases.
The appearance of compound single-pile foundation well solves the problem, composite pile foundation is combined traditional single-pile foundation and cylindrical foundation, connection handling is carried out with heavy viscous material between stake cylinder, compound single-pile foundation significantly improves the horizontal bearing capacity of single-pile foundation, avoiding traditional single-pile foundation is that level of control displacement causes that a footpath is excessive, dark problem of burying, effectively can reduce the cost using single-pile foundation to carry out Wind Power Generation, there is great economic benefit.The process of the compound single-pile foundation proposed to stake cylinder connecting portion uses heavy viscous material to connect, after connecting, stake cylinder becomes as a whole, because offshore wind power foundation mainly controls by large moment load, horizontal loading can be passed to cylindrical foundation by above-mentioned type of attachment, also can most of moment of flexure be delivered on cylindrical foundation simultaneously, the cover steel plate thickness of the cylindrical foundation used due to compound single-pile foundation is smaller, if cylinder header field bears excessive moment of flexure, there will be bending deformation and destroy.
Summary of the invention
The object of the invention is to for the problems referred to above, propose the connecting elements of a kind of cylindrical foundation and single pile, significantly can reduce the transmission of moment of flexure between single pile and cylindrical foundation in compound single-pile foundation.
Object of the present invention is achieved by following technical proposals:
A connecting elements for cylindrical foundation and single pile, by being arranged to the arc contact head carrying out sphere-contact with pile foundation inside cylindrical foundation top cover with the contact site of pile foundation, is contacted with pile foundation by sphere; Single pile is provided with reinforcing ring in contact site stake.
Described arc contact head surface is carried out grinding process and is ensured that it is smooth.
Described cylindrical foundation is the steel cylindrical foundation of band top cover.
Described single pile is steel single pile.
Described reinforcing ring and single pile are welded as entirety.
Close contact between described arc contact head and single pile contact site, transmits load by contact site.
(namely between cylindrical foundation and single pile) employing dome-type anatomical connectivity between pile foundation and negative pressure cylinder.
The diameter of described arc contact head is identical with the lid thickness of cylindrical foundation top cover, such as, be set to 30mm; Described reinforcing ring selects metal ring, thickness 50mm, height 500mm, external diameter 2.05m.
The present invention be directed to the composite pile foundation connecting portion proposed and transmit moment of flexure, and cause negative pressure cover that the problem of buckling failure easily occurs, propose a kind of novel connecting elements being applicable to composite pile foundation, arc connection is carried out to pile foundation and negative pressure cylinder, the power transmission pattern between pile foundation and negative pressure cylinder can be improved, improve safety factor when composite pile foundation uses, there is good economic benefit.Arc contact head is set in technical scheme of the present invention inside cylindrical foundation cover and connects stake cylinder basis, greatly reduce the contact area of single pile and bucket foundation, achieve between pile foundation and negative pressure cylinder and mainly transmit horizontal loading, significantly reduce the transmission of moment of flexure.Also can not there is buckling failure because of large Moment in cylinder header field, make compound single-pile foundation definitely stressed, is conducive to the reinforcement design difficulty reducing cylinder top cover.
Accompanying drawing explanation
Fig. 1 is the structural representation of the connecting elements of cylindrical foundation of the present invention and single pile, and wherein 1 is cylindrical foundation; 2 is single pile; 3 is arc contact head; 4 is reinforcing ring.
Detailed description of the invention
Technical scheme of the present invention is further illustrated below in conjunction with instantiation.
Composite pile foundation syndeton as shown in Figure 1,1 is cylindrical foundation; 2 is single pile; 3 is arc contact head; 4 for strengthening steel loop; The contact site of the inner side on negative pressure cylinder top cover and pile foundation is arranged arc contact head, is contacted with pile foundation by sphere; Single pile establishes reinforcing ring in contact site stake.Described arc contact head is dome-type structure, connects between pile foundation and negative pressure cylinder.Arc contact head diameter is identical with cover thickness, is set to 30mm; Reinforcing ring selects metal ring, thickness 50mm, and height 500mm, external diameter 2.05m, is welded as entirety with single pile.Close contact between arc contact head and single pile contact site, transmits load by contact site.
Specific construction process is as follows: 1, the making of steel pipe pile, cylindrical foundation; 2, the processing of connecting portion; 3, cylindrical foundation sinking; 4, pile sinking is carried out using cylindrical foundation as piling guiding.
Above to invention has been exemplary description; should be noted that; when not departing from core of the present invention, any simple distortion, amendment or other those skilled in the art can not spend the equivalent replacement of creative work all to fall into protection scope of the present invention.
Claims (4)
1. a connecting elements for cylindrical foundation and single pile, is characterized in that, by being arranged to the arc contact head carrying out sphere-contact with pile foundation inside cylindrical foundation top cover with the contact site of pile foundation, is contacted with pile foundation by sphere; Single pile is provided with reinforcing ring in contact site stake; Described cylindrical foundation is the steel cylindrical foundation of band top cover; Described single pile is steel single pile; Described reinforcing ring and single pile are welded as entirety; The diameter of described arc contact head is identical with the lid thickness of cylindrical foundation top cover.
2. the connecting elements of a kind of cylindrical foundation according to claim 1 and single pile, is characterized in that, the diameter of described arc contact head and the lid thickness of cylindrical foundation top cover are set to 30mm.
3. the connecting elements of a kind of cylindrical foundation according to claim 1 and single pile, is characterized in that, described reinforcing ring selects metal ring, described reinforcing ring thickness 50mm, height 500mm, external diameter 2.05m.
4. the connecting elements of a kind of cylindrical foundation according to claim 1 and single pile, is characterized in that, the arc contact head between described cylindrical foundation and single pile adopts dome-type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310166815.2A CN103243734B (en) | 2013-05-08 | 2013-05-08 | Connecting component for cylindrical foundation and single pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310166815.2A CN103243734B (en) | 2013-05-08 | 2013-05-08 | Connecting component for cylindrical foundation and single pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103243734A CN103243734A (en) | 2013-08-14 |
| CN103243734B true CN103243734B (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310166815.2A Active CN103243734B (en) | 2013-05-08 | 2013-05-08 | Connecting component for cylindrical foundation and single pile |
Country Status (1)
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| CN (1) | CN103243734B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887909A (en) * | 2014-11-25 | 2016-08-24 | 上海同济启明星科技发展有限公司 | Petal type umbrella-shaped composite single pile foundation |
| CN108442401A (en) * | 2018-05-23 | 2018-08-24 | 中国科学院力学研究所 | A kind of combined type sea upper fan foundation structure |
| CN110952547B (en) * | 2019-11-25 | 2022-04-12 | 河海大学 | Suction bucket type underwater piling noise reduction device and construction method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2328905B (en) * | 1996-05-17 | 2000-01-26 | Micklewright Charles Anthony | Method and apparatus for the improvement in load-bearing capacity of floating structure |
| CN1995557A (en) * | 2006-10-27 | 2007-07-11 | 上海海事大学 | Stake-barrel base |
| CN201381513Y (en) * | 2009-04-10 | 2010-01-13 | 段厚良 | Controllable flexible sliding type shock absorption foundation pile |
| US8596919B2 (en) * | 2010-11-23 | 2013-12-03 | Technip France | Anti-scour disk and method |
| CN102663934B (en) * | 2012-04-13 | 2014-03-26 | 四川大学 | Twist-free compound pendulum in spherical surface touch |
| CN203213142U (en) * | 2013-05-08 | 2013-09-25 | 天津大学 | Connecting component of cylindrical foundation and single pile |
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- 2013-05-08 CN CN201310166815.2A patent/CN103243734B/en active Active
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| CN103243734A (en) | 2013-08-14 |
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Effective date of registration: 20200720 Address after: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Co-patentee after: China Three Gorges new energy (Group) Co.,Ltd. Patentee after: Tianjin University Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Patentee before: Tianjin University |
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