Dewatering structure for preventing underground structure from floating upwards and construction method thereof

Abstract

The invention discloses a dewatering structure for preventing an underground structure from floating upwards and a construction method thereof. The dewatering structure comprises a water drain pipe, a water stop plate and a gravel filter layer; the drain pipe is arranged at the bottom of a water-collecting well, and the lower end of the drain pipe extends into a soil body below a cushion layer; water drain hole channels are formed in the side wall of the water drain pipe and located in the soil body at intervals; a pipeline of the water drain pipe is filled with an expansive concrete core, and the top face of the expansive concrete core is lower than the top end of the water drain pipe; a plugging plate is arranged in the pipeline of the water drain pipe and located on the top face of the expansive concrete core; the water drain pipe above the plugging plate is filled with a sealant; the water stop plate is annular and is welded to the outer side wall of the water drain pipe; the periphery of the water drain pipe is filled with the gravel filtering layer, and the top face of the gravel filtering layer is flush with the bottom face of the cushion layer; and the outer side of the gravel filtering layer is wrapped with geotechnical cloth. The technical problems that a traditional bottom plate reserved dewatering pipe well is complex in construction procedure, leakage is prone to occurring in the later period, and the dewatering well is damaged or stops running in the construction period of a basement main body structure are solved.

Description

technical field [0001] The invention belongs to the technical field of building engineering construction, in particular to a precipitation structure for preventing underground structures from floating up and a construction method thereof. Background technique [0002] As the development of real estate projects accelerates, accidents caused by groundwater problems such as basement floating and floor punching damage during construction occur frequently. Such accidents are usually caused by the following reasons: 1. The precipitation well is damaged due to construction and cannot be used for precipitation; 2. 1. After the post-pouring belt is closed and the fertilizer tank of the foundation pit is backfilled, there is no precipitation measure. At the same time, the roof of the garage is not covered with soil, and the garage structure is insufficient in anti-floating; 3. The value of the anti-floating water level is wrong, and the actual water level exceeds the anti-floating desi...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a dewatering structure that prevents the underground structure from floating up, and solve the problems that the traditional bottom plate reserved dewatering tube wells have complex construction procedures, are prone to leakage in the later stage, and the dewatering wells are damaged or stopped operating during the construction of the main structure of the basement. question

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