Combined cofferdam of steel slab pile and steel pipe pile an method for manufacturing the same

A technology of combining cofferdams and manufacturing methods, which is applied in sheet pile walls, buildings, infrastructure projects, etc., can solve the problems of difficult to guarantee the water-stop effect at the interface, deformation, and low rigidity, so as to achieve convenient construction and reduce workload. , the effect of saving materials

Active Publication Date: 2006-09-27
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The steel sheet pile has the advantages of stable material, reliable quality, fast construction speed in weak soil layers, simple technology, and good water-retaining performance. The steel sheet pile as a temporary structure can be pulled out and reused, reducing project cost, etc. However, there are disadvantages such as low rigidity and large deformation under lateral pressure.
Steel pipe piles have great rigidity and are not easily deformed, but it is difficult to guarantee the water-stop effect at the interface between steel pipe piles and steel pipe piles during construction

Method used

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  • Combined cofferdam of steel slab pile and steel pipe pile an method for manufacturing the same
  • Combined cofferdam of steel slab pile and steel pipe pile an method for manufacturing the same
  • Combined cofferdam of steel slab pile and steel pipe pile an method for manufacturing the same

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the drawings and embodiments.

[0013] A combined cofferdam of steel sheet piles and steel pipe piles is characterized in that at least one steel sheet pile 2 is arranged between two steel pipe piles 1, and adjacent steel sheet piles 2 and steel pipe piles 1 are connected by tongues and grooves. The length of the pile 1 and the steel sheet pile 2 is the same, and the length is 10-50m, and the pile sinking depth of the steel pipe pile 1 and the steel sheet pile 2 is the same, and the pile sinking depth is 5m-40m. The specification of the steel pipe pile 1 used in the present invention is φ400~φ1500 (diameter / mm), the specification of the steel sheet pile 2 is No. III (400×150×13.1) or No. IV (400×170×15.5) steel sheet pile, steel pipe The structure of pile 1 and steel sheet pile 2 is as follows image 3 with Figure 4 Shown. In the present invention, 1 to 3 steel sheet piles 2 can be arranged between tw...

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Abstract

The invention discloses a steel plate-tube post combined cofferdam and relative method, which is characterized in that: at least one steel plate post is arranged between two steel tube posts; and nearby steel plate and tube posts are connected by grooves; the depths of steel tube and plate posts are the same. The invention can combine the properties of steel plate and tube posts, to solve the waterproof problem. It can reduce the material consumption and the working time, with better economic benefits.

Description

Technical field: [0001] The present invention relates to a large-scale civil construction material for water-stopping and protection of foundation pits during underwater construction, in particular to a combined cofferdam of steel sheet piles and steel pipe piles. Background technique: [0002] For the excavation of foundation pits in water, there should be safe foundation pit protection, that is, a cofferdam is built around the foundation pit for drainage, foundation excavation and foundation construction. Cofferdam engineering should mainly consider the requirements of stability and anti-seepage. Common types of cofferdams are: soil cofferdam, straw bag cofferdam, wood pile cofferdam, steel cofferdam and steel concrete cofferdam. For foundation pit projects with a higher level of safety constructed in deep water, the stability and anti-seepage properties of the cofferdam are relatively strict. Steel cofferdams are widely used in engineering due to their high rigidity, good seep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/04E02D5/08E02D7/00
Inventor 王海燕
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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