CN201649077U - Variable-pile-diameter single pile foundation - Google Patents
Variable-pile-diameter single pile foundation Download PDFInfo
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- CN201649077U CN201649077U CN2010201657959U CN201020165795U CN201649077U CN 201649077 U CN201649077 U CN 201649077U CN 2010201657959 U CN2010201657959 U CN 2010201657959U CN 201020165795 U CN201020165795 U CN 201020165795U CN 201649077 U CN201649077 U CN 201649077U
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Abstract
The utility model relates to a variable-pile-diameter single pile foundation. The utility model aims at providing a variable-pile-diameter single pile foundation which has advantages of simple structure, fast, simple and convenient construction and is applicable to sea areas ranging from 0 to 30m, thereby achieving purposes of reducing work load, shortening construction period and decreasing construction cost. The technical scheme is as follows: the variable-pile-diameter single pile foundation is characterized by consisting of an upper steel pipe pile and a lower steel pipe pile which are connected with each other, wherein the diameter of the lower steel pipe pile is smaller than that of the upper steel pipe pile. The variable-pile-diameter single pile foundation is mainly applicable to civil engineering in marine engineering industry, especially to soft soil foundation of sea areas ranging from 0 to 30m.
Description
Technical field
The utility model relates to a kind of single pile foundation structure that is used for offshore wind farm unit and other marine engineerings, and single pile basis, particularly a kind of change stake footpath mainly is applicable to marine engineering industry civil engineering, especially the soft foundation sea bed in 0-30m marine site.
Background technology
Since the eighties in 20th century, offshore engineerings such as bridge, harbour, ocean platform that China has utilized the large diameter steel pipe pile structure construction, because country encourages the development and utilization to regenerative resource, offshore wind farm has obtained developing rapidly in recent years.Because the particularity of marine natural environment, marine pile foundation basis will solve a series of problems such as anti-tidewater, anti-wave, soft foundation, seawater corrosion, rapid construction.
Land wind-powered electricity generation unit basis is general adopts concreting pier structure, if be applied to offshore wind farm, then the mixing system of on-site concrete, the influence that construction is subjected to severe sea condition easily such as build, construction technology is complexity, long in time limit, also when the river rises the boat goes up thereupon for construction cost.
Summary of the invention
The technical problems to be solved in the utility model is: based on the coastal offshore wind farm ambient conditions of China, provide a kind of simple in structure, construction is fast and convenient and be applicable to the single pile basis, change stake footpath in 0～30m marine site, reduce workload to reach, shorten the construction period, reduce the purpose of construction cost.
The technical scheme that the utility model adopted is: become single pile basis, stake footpath, it is characterized in that: it is interconnected by last steel pipe pile and following steel pipe pile and forms, and wherein descends the diameter of the diameter of steel pipe pile less than last steel pipe pile.
Described steel pipe pile top is down stretched into the steel pipe pile bottom and is formed overlapping.
Described upward steel pipe pile is connected steel plate at lap by 6-15 piece parallelogram with following steel pipe pile and is welded and fused.
The described diameter of going up steel pipe pile is 3000～6000mm.
The described diameter of steel pipe pile down is 1000～3000mm.
The thickness of described connection steel plate is 20-40mm.
The beneficial effects of the utility model are: 1, whole basis can be prefabricated in the factory, and has not only guaranteed quality, and has reduced the operation on the sea amount, shortened the activity duration, thereby has reduced construction cost; 2, by analysis to suffered load and geotechnical boring, design diameter, wall thickness and the bindiny mechanism of steel pipe pile up and down, fully reduced the consumption of steel; 3, adopt one group of connection steel plate to be welded as a whole up and down between the steel pipe pile, the centre is the hollow out formula, can not cause the piling difficulty; 4, steel pipe pile adopts the steel pipe pile of ultra-large type caliber and conventional caliber respectively up and down, and single wind-powered electricity generation unit basis only needs single stake, has significantly reduced workload, has reduced the construction period, has reduced foundation cost.
Description of drawings
Fig. 1 is an elevation of the present utility model.
Fig. 2 is a plan view of the present utility model.
The specific embodiment
It is bigger to take into full account offshore wind farm unit wind load, and the characteristics that soil rigidity is had relatively high expectations can adopt superhuge steel pipe pile under the situation of conditions permit.And top layer, the coastal marine site of China weak soil is thicker, if adopt full section super-large diameter steel pipe pile, then single stake weight is excessive, and lifting, pile sinking difficulty are big, and cause very big waste.So present embodiment is divided into steel pipe pile 1 and following steel pipe pile 3 two parts with the basis, wherein go up the steel pipe pile that steel pipe pile 1 adopts the ultra-large type caliber, the stake footpath is 4.5m, and 3 of following steel pipe piles are the steel pipe pile of conventional caliber, and the stake footpath is 2.0m; Following steel pipe pile 3 head portions stretch into steel pipe pile 1 bottom and form overlapping, at this overlapping part, the parallelogram connection steel plate 2 that is 30mm by 12 thickness is welded and fused upper and lower steel pipe pile 1,3, the resistance that produces in order to reduce to drive piles, it is parallel with vertical direction to connect steel plate 2 plate faces, in order to guarantee welding quality, last steel pipe pile 1, the welding that connects between steel plate 2 and the following steel pipe pile 3 are all finished on land.
In actual use, following steel pipe pile 3 bottoms are squeezed in the following bearing stratum of sea bed face, the soil layer certain depth is stretched in last steel pipe pile 1 bottom, and the top then links to each other with the tower tube of wind-powered electricity generation unit by flange or other linkage section, constitutes the braced structures of offshore wind farm unit.
The stake footpath of up and down steel pipe pile of the present utility model, stake are long, wall thickness etc. can be specifically definite according to the load situation on wind-powered electricity generation unit basis, residing geology and hydrologic condition, and the utility model also can be used for the basis of other similar marine engineering.
Claims (6)
1. one kind becomes single pile basis, stake footpath, and it is characterized in that: it is interconnected by last steel pipe pile (1) and following steel pipe pile (3) and forms, and wherein descends the diameter of the diameter of steel pipe pile (3) less than last steel pipe pile (1).
2. single pile basis, change stake footpath according to claim 1 is characterized in that: described steel pipe pile (3) top is down stretched into steel pipe pile (1) bottom and is formed overlapping.
3. single pile basis, change stake footpath according to claim 2 is characterized in that: described upward steel pipe pile (1) is connected steel plate (2) at lap by 6-15 piece parallelogram with following steel pipe pile (3) and is welded and fused.
4. according to claim 1 or single pile basis, 2 or 3 described change stake footpath, it is characterized in that: the described diameter of going up steel pipe pile (1) is 3000～6000mm.
5. according to claim 1 or single pile basis, 2 or 3 described change stake footpath, it is characterized in that: the described diameter of steel pipe pile (3) down is 1000～3000mm.
6. single pile basis, change stake footpath according to claim 3, it is characterized in that: the thickness of described connection steel plate (2) is 20-40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201657959U CN201649077U (en) | 2010-04-15 | 2010-04-15 | Variable-pile-diameter single pile foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201657959U CN201649077U (en) | 2010-04-15 | 2010-04-15 | Variable-pile-diameter single pile foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201649077U true CN201649077U (en) | 2010-11-24 |
Family
ID=43114304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201657959U Expired - Fee Related CN201649077U (en) | 2010-04-15 | 2010-04-15 | Variable-pile-diameter single pile foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201649077U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677667A (en) * | 2012-05-07 | 2012-09-19 | 刘杰 | Concrete variable-section pipe pile |
| CN110067203A (en) * | 2019-04-19 | 2019-07-30 | 中交二航局第二工程有限公司 | A kind of pier shaft bent cap hanging bracket applied to the area rough swell Lang Didun |
| CN111042121A (en) * | 2019-12-20 | 2020-04-21 | 深圳市蛇口招商港湾工程有限公司 | Construction method of bored backfill end pile foundation |
-
2010
- 2010-04-15 CN CN2010201657959U patent/CN201649077U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677667A (en) * | 2012-05-07 | 2012-09-19 | 刘杰 | Concrete variable-section pipe pile |
| CN110067203A (en) * | 2019-04-19 | 2019-07-30 | 中交二航局第二工程有限公司 | A kind of pier shaft bent cap hanging bracket applied to the area rough swell Lang Didun |
| CN110067203B (en) * | 2019-04-19 | 2021-01-26 | 中交二航局第二工程有限公司 | Pier body bent cap hanging bracket applied to strong-surge low-pier area |
| CN111042121A (en) * | 2019-12-20 | 2020-04-21 | 深圳市蛇口招商港湾工程有限公司 | Construction method of bored backfill end pile foundation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20190415 |