Steel sheet pile cofferdam and construction method thereof

Abstract

The invention provides a steel sheet pile cofferdam and a construction method thereof, and belongs to the technical field of bridge construction. The steel sheet pile cofferdam comprises a first cofferdam layer, a second cofferdam layer, first supporting layers and second supporting layers; the top of the first cofferdam layer is higher than a flat peak water level; the second cofferdam layer is arranged on the outer side of the first cofferdam layer; the bottom of the second cofferdam layer is higher than the bottom of the first cofferdam layer; the top of the second cofferdam layer is higherthan a water level in a flood period; a plurality of the first supporting layers are arranged on the inner side of the first cofferdam layer; the plurality of the first supporting layers are arrangedin the height direction of the first cofferdam layer at intervals; a plurality of the second supporting layers are arranged on the inner side of the second cofferdam layer; the plurality of the second supporting layers are arranged in the height direction of the second cofferdam layer at intervals; and the second supporting layers are positioned above the first supporting layers. The steel sheetpile cofferdam provided by the invention is strong to stability, can effectively block the water level in the flood season, and reduces the construction cost.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and more specifically relates to a steel sheet pile cofferdam and a construction method thereof. Background technique [0002] Steel sheet pile cofferdam is a common method for bridge foundation construction, and has been widely used in bridge construction in recent years due to its advantages of fast construction speed, low cost, and high safety performance. [0003] The conventional sizes of steel sheet piles are divided into three types: 12m, 15m, and 18m. However, flood seasons are often encountered during construction. After the water level rises during flood seasons, conventional-sized steel sheet piles cannot effectively block water, and longer-sized steel sheet piles need to be installed. However, steel sheet piles exceeding 18m need to be obtained by customizing the entire steel sheet pile, which is costly and inconvenient to transport; two conventional steel sheet piles can ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a steel sheet pile cofferdam and its construction method, aiming to solve the technical problems of high cost and inconvenient transportation of existing long steel sheet piles, and insufficient connection performance at the weld seam after welding two conventional steel sheet piles.

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