Larsen steel sheet pile cofferdam and construction method thereof

Abstract

The invention relates to a Larsen steel sheet pile cofferdam and a construction method thereof. The Larsen steel sheet pile cofferdam comprises a plurality of Larsen steel sheet piles which are adjacently spliced, the Larsen steel sheet piles form a U shape, and the open end of the U shape abuts against a river bank; the area defined by the Larsen steel sheet piles and the river bank is a backwater side, and the outer sides of the Larsen steel sheet piles are water-facing sides; backfill is arranged in the area defined by the Larsen steel sheet piles and the river bank, the top face of the backfill is flush with the top faces of the Larsen steel sheet piles, and an operation platform and a vehicle walking channel are formed; a buffer layer and an anti-corrosion plate are sequentially attached to the water-facing side of each Larsen steel sheet pile; and the adjacent anti-corrosion plates are overlapped at the joints of the adjacent Larsen steel sheet piles and are fixedly connected through fixing mechanisms. An anti-corrosion layer and a sponge layer are fixed to the water-facing sides, so that corrosion can be better prevented, the construction quality is guaranteed, and the service life is prolonged.

Description

technical field [0001] The invention relates to a Larsen steel sheet pile cofferdam and a construction method thereof, belonging to the field of building construction. Background technique [0002] Larsen steel sheet pile is also called U-shaped steel sheet pile. As a new type of building material, it can be used as a retaining wall for soil, water, and sand when building bridge cofferdams, laying large-scale pipelines, and excavating temporary ditches; Parapet walls, retaining walls, embankment protection banks, etc., play an important role in engineering. The interlocking of adjacent Larsen sheet piles can (when the sheet piles are interlocked) form a watertight structure thereby increasing the strength of the sheet pile structure. [0003] Cofferdam refers to the temporary enclosure structure built for the construction of permanent water conservancy facilities in the construction of water conservancy projects. Its function is to prevent water and soil from entering the ...

AI Technical Summary

Problems solved by technology

[0004] The Larsen steel sheet pile cofferdam is a cofferdam made of Larsen steel sheet piles. The problem with the existing Larsen steel sheet pile cofferdams is that the surface water side of the Larsen steel sheet piles suffers from large water flow impacts and fluctuations. It is easy to cause steel plate corrosion, thereby reducing the service life of the steel plate and affecting the construction process

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