Construction method of dry dock foundation pit and dry dock foundation pit structure

Abstract

The invention discloses a construction method of a dry dock foundation pit. The construction method comprises the steps that A, a cutoff wall is built outside a foundation pit construction area, wherein the cutoff wall surrounds the foundation pit construction area, and the bottom of the cutoff wall reaches an impermeable layer; a drainage ditch is dug in the surface outside the cutoff wall; a plurality of vertical dewatering wells are dug between the cutoff wall and the foundation pit construction area; the foundation pit is excavated; and a drainage cushion layer is laid at the pit bottom ofthe foundation pit, a drainage pipe is installed in the drainage cushion layer, and then a concrete layer is poured on the upper surface of the drainage cushion layer. The invention further disclosesa dry dock foundation pit structure which can be constructed by adopting the construction method. According to the construction method, rainwater, groundwater, surface water and the like can be prevented from entering the foundation pit and generating accumulated water, so that the construction is continuously and normally carried out, the construction efficiency is improved, and the constructionquality is ensured.

Description

technical field [0001] The invention relates to the technical field of dry dock construction, in particular to a dry dock foundation pit construction method and a dry dock foundation pit structure. Background technique [0002] The dry dock is a closed boat pool suitable for inspection and repair of ships out of the water. Dry docks are generally built on the seashore, where there is abundant groundwater and rainwater. During foundation pit construction on dry docks, water inflows into the foundation pit and water accumulation often occurs. Soaking in accumulated water will have adverse effects on the foundation pit and reduce the cost Construction quality; when water enters the foundation pit, a water pump is generally used to pump out the accumulated water, which affects the construction progress of the foundation pit. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a dry dock foundation pit construction metho...

AI Technical Summary

Problems solved by technology

Dry docks are generally built on the seashore, where there is abundant groundwater and rainwater. When constructing foundation pits on dry docks, water often enters the foundation pits and produces accumulated water. Construction quality; when water enters the foundation pit, water pumps are generally used to pump out the accumulated water, which affects the construction progress of the foundation pit

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