Waterproof sheet pile cofferdam and construction method thereof

A technology of waterproof boards and cofferdams, which is applied in the direction of infrastructure engineering, construction, etc., can solve the problems of sheet piles that are not tightly inserted, troublesome construction, and water leakage at the locks, so as to achieve flexible and diverse layout methods and good waterproof performance , the effect of good interlocking performance

Inactive Publication Date: 2009-12-09
NANTONG HUAGONG MACHINERY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in actual engineering, water leakage and water seepage often occur in the steel sheet pile cofferdam. The main reason is that the old steel sheet piles have not been corrected before use or the steel sheet piles are inclined when they are driven in. The insertion is not tight, resulting in water leakage and water seepage at the lock
If there is a water leakage problem in t...

Method used

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  • Waterproof sheet pile cofferdam and construction method thereof
  • Waterproof sheet pile cofferdam and construction method thereof
  • Waterproof sheet pile cofferdam and construction method thereof

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the embodiment that accompanying drawing provides.

[0029] see figure 1 , 2 , Bundle three steel pipes with vertical seams (position of the vertical seams according to the design requirements) together, and weld them into a Y-shaped cluster steel pipe pile 1 by welding. Y-shaped cluster steel pipe piles have strong integrity, good bending resistance, strong ability to penetrate complex soil layers, and are driven into the soil layer to a large depth. They are used as long piles for this waterproof cofferdam; sodium-based bentonite mixture is poured into the steel pipes. Filling core 2; U-shaped steel sheet pile 3 with everted horizontal flanges is produced by cold-formed steel technology, and a single row of bolt holes is provided on the flanges on both sides. The steel plate and steel pipe arc section are welded to form a trough-shaped steel bar 4 as a limit locking clip, and its shape matches...

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Abstract

A waterproof sheet pile cofferdam is provided with a plurality of cluster steel pipe piles; two adjacent cluster steel pipe piles are connected by steel plate baffles, each cluster steel pipe pile is formed by welding at least two steel pipes as the long pile of the cofferdam, each steel pipe is provided with a gap running through the steel pipe, limited blocks are arranged between the insertion edges of the steel plate baffles and the gaps, the steel pipes of the cluster steel pipe piles are internally provided with waterproof fillers prepared by the mixture of 40-50% of bentonite, 20-25% offly ash, 25-35% of red mud.

Description

technical field [0001] The invention relates to civil engineering cofferdam technology, in particular to a waterproof sheet pile cofferdam and a construction method thereof, which can be applied to deep-water foundation construction, soil retaining support structures, embankment protection banks, etc. in the fields of bridge engineering and port engineering. Background technique [0002] In the construction of bridge foundations and hydraulic structures, in order to prevent water and soil from entering the construction site of bridge piers or buildings, it is necessary to build a temporary cofferdam structure to drain water in the cofferdam, excavate foundation pits, and build buildings. When the water depth is shallow, soil cofferdams are generally used; in rivers with deep water and high flow velocity, wooden sheet piles or steel sheet pile cofferdams are generally used, and the cofferdams are generally removed after use. [0003] The traditional steel sheet pile cofferdam...

Claims

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Application Information

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IPC IPC(8): E02D19/04
Inventor 徐文平王仙美周晨沈旭鸿
Owner NANTONG HUAGONG MACHINERY
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