Foundation pit support

Abstract

The invention discloses a foundation pit support. The foundation pit support has the advantage that the side wall of a foundation pit is unlikely to collapse. The foundation pit support comprises a supporting plate with a cavity; the upper side of the supporting plate communicates to a vacuum pump; a supporting pipe inserted into soil is arranged on the side face of the supporting plate; the supporting pipe communicates to the cavity and a water suction hole is formed in the pipe wall of the supporting pipe. The supporting plate is used for supporting the side wall of the foundation pit; a supporting structure is reinforced by means of the supporting pipe; after the supporting pipe is inserted into soil, water in soil flows into the supporting pipe under the negative pressure through air extraction by means of the vacuum pump; water in the supporting pipe enters the cavity of the supporting plate, and the pressure of the soil on the supporting plate is reduced, so that the side wall ofthe foundation pit is unlikely to collapse.

Description

technical field [0001] The invention relates to a support, in particular to a foundation pit support. Background technique [0002] With the rapid development of the modern construction industry, there are more and more high-rise and super high-rise buildings. Due to the large load on the upper part of the high-rise and super high-rise buildings, most of them adopt compensatory foundations. Generally, multi-storey basements are set up to facilitate the stability of the buildings, but this leads to The foundation is deeply buried and the excavation of the foundation pit is deep. Especially when deep foundation pits are excavated in areas with high groundwater levels, the soil aquifer will be cut off, and groundwater will continue to seep into the foundation pit, causing quicksand, slope instability or making the foundation The carrying capacity is reduced. [0003] At present, the Chinese patent document with the authorized announcement number CN206328765U in the prior art d...

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Problems solved by technology

[0004] This prior art uses a drainage pump to pump out the accumulated water in the water storage tank to complete the drainage of the foundation pit. However, in this type of prior art, the bottom of the foundation pit is generally drained, and there is a lack of drainage to the side walls of the foundation pit. The groundwater level is higher than that of the foundation pit. On the bottom of the foundation pit, the side wall of the foundation pit also bears a large lateral pressure, which may easily cause the side wall of the foundation pit to collapse

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