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Steel pipe pile

A technology of steel pipe piles and steel plates, which is applied in the field of friction piles, can solve the problems of increased cost, low structural strength and reduced reliability of the connection between the eversion flange and steel pipe piles, and achieve the effect of improving the bearing capacity of single piles

Inactive Publication Date: 2011-04-27
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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Problems solved by technology

Although such a structure can increase the external contact area of ​​the steel pipe pile and increase the friction force of the steel pipe pile, its structure is complex, and the structural strength of the connection between the everted flange and the steel pipe pile is not high, and the reliability is reduced. cost increase

Method used

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Embodiment Construction

[0020] The selection of the bearing layer at the pile tip is an important control factor in pile foundation engineering. When there is a contradiction between the design of the bearing capacity of the single pile, the bearing layer at the pile tip and the pile sinking conditions, it is necessary to find a technical measure to solve the problem. Balance the contradictions among these three factors, and achieve the expected bearing capacity of single pile under the premise of satisfying the bearing layer at the pile end and pile sinking conditions.

[0021] The single pile bearing capacity of the friction pile is mainly provided by the pile side friction resistance, which has two determining factors, one is the friction strength per unit area, and the other is the friction area. The frictional strength per unit area is determined by geological conditions and generally cannot be changed; while the pile side area can be improved by some measures. According to the material characte...

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Abstract

The invention discloses a steel pipe pile. A plurality of paths of stiffened steel plates are welded on the surface outside the wall of the steel pipe pile along the axial direction and are arranged on the periphery outside the wall of the steel pipe pile at equal distance. The invention provides the steel pipe pile with simple structure and lower cost. By using the invention, under the condition without increasing the pipe length and the diameter, the bearing capacity of a single pipe is improved, the production and the pile driving of the steel pipe pile cannot be influenced and the increment of materials is extremely limited.

Description

technical field [0001] The invention relates to a friction pile used in structural engineering, in particular to a steel pipe pile. Background technique [0002] Friction piles are one of the types of pile foundations in structural engineering, and are mainly used in construction engineering, bridge engineering, port engineering, etc. The friction piles currently used mainly include reinforced concrete drilled (digged) hole pouring piles, reinforced concrete prefabricated solid piles, steel pipe piles, PHC (prestressed high-strength concrete) pipe piles, PC (prestressed concrete) pipe piles, etc. Among them, the steel pipe pile is a relatively high-cost friction pile structure. [0003] The usual steel pipe piles are circular thin-walled sections. Due to the circular steel pipe pile, the pile peripheral surface area is determined by the pile length and pile diameter. Under the condition of not changing the pile length and pile diameter, the pile peripheral surface area is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/28E02D5/48E02D5/50
Inventor 彭俊朱敏
Owner SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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