Water supply and drainage device for deep foundation pit and construction method based on the water supply and drainage device

Abstract

The invention discloses a water supply and drainage device for a deep foundation pit and a construction method based on the water supply and drainage device. The water supply and drainage device comprises a water collecting sleeve and a water suction pump, wherein the water suction pump is placed in the water collecting sleeve; the water collecting sleeve comprises a steel sleeve and a reinforcing bar grid; the reinforcing bar grid is arranged at the lower end of the steel sleeve and is integrally connected with the steel sleeve in a welded manner; the steel sleeve at the upper end of the water collecting sleeve is positioned in structural concrete; the reinforcing bar grid on the lower portion of the water collecting sleeve is positioned in a base below a structural bottom plate; and a plurality of drainage tubes are arranged on the periphery of the base. Compared with the prior art, the water supply and drainage device for the deep foundation pit and the construction method based on the water supply and drainage device have the advantages that a structural reserved hole is omitted, the structural waterproofing and the construction quality are greatly improved, the construction period is shortened, and the cost is reduced.

Description

technical field [0001] The invention relates to a foundation pit drainage device, in particular to a water supply and drainage device for deep foundation pits and a construction method based on the water supply and drainage device. Background technique [0002] In the prior art, for strata with high groundwater level, rich bedrock fissure water, and poor precipitation effect, the construction method of laying brick wells and placing submersible pumps for drainage of foundation pits is usually used. This form not only has low work efficiency, but also must reserve a post-pouring belt at the location of the brick water collection well, and then seal it after the concrete is poured in the later stage. Since there is always water, the plugging is very difficult, and the quality of the plugging cannot be effectively guaranteed. , In the later stage, the structure is prone to water leakage, and the submersible pump is stuck in the steel bar and cannot be lifted up, resulting in wa...

AI Technical Summary

Problems solved by technology

The foundation pit of Liulichang Station is divided into 20 excavation sections. If the collection and drainage wells are arranged according to the traditional method, it will not be able to meet the site waterproof quality requirements, the efficiency will be low, and the construction period and cost will be affected.

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