A basement structure based on foundation pit support and its construction method

Abstract

The invention relates to the technical field of building construction, and discloses a basement structure based on foundation pit support, which includes a basement exterior wall, support piles, foundation pit support beams and a water-stop steel frame, and the support piles are arranged on the basement exterior wall. On the outside, the foundation pit supporting beam passes through the basement outer wall and connects the basement outer wall and the supporting piles. The foundation pit supporting beam includes a plurality of first steel bars, and the waterproof steel frame is located at the junction of the foundation pit supporting beam and the basement outer wall. It is fixedly connected with the first steel bar, the inner peripheral wall of the waterproof steel frame is embedded in the foundation pit supporting beam, and the outer peripheral wall of the waterproof steel frame protrudes from the outer peripheral wall of the foundation pit supporting beam. Based on this, the water-stop steel frame can effectively resist the groundwater with a certain pressure, which greatly prolongs the path of water seepage and reduces the risk of water seepage when the groundwater penetrates into the room along the gap between the support beam and the basement exterior wall , thereby reducing the maintenance cost of the basement exterior wall, and the structure of the waterproof steel frame is simple, easy to manufacture and install.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a basement structure based on foundation pit support. The invention also relates to a construction method of the basement structure based on foundation pit support. Background technique [0002] The foundation pit support is to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit, and the support, reinforcement and protection measures are adopted for the side wall of the foundation pit and the surrounding environment. During the construction of the basement, operators usually need to build row piles outside the outer wall of the basement for pile row support to strengthen the foundation. The row pile support is usually composed of support piles, supports and anti-seepage curtains. In foundation pit support, foundation pit support beams are generally used to support the foundation pit. When the foundation ...

AI Technical Summary

Problems solved by technology

In foundation pit support, foundation pit support beams are generally used to support the foundation pit. When the foundation pit support beams in the basement pass through the basement exterior wall and connect with the support piles, there are construction joints at the connection between the support beam and the basement exterior wall. There is a risk of water seepage

[0003] The existing construction method generally uses cement slurry to smooth the connection, but the basement structure formed by this treatment method cannot resist the groundwater with a certain pressure, and there is still a risk of water seepage. Once the groundwater passes along the supporting beam and the basement The gaps between the exterior walls seep into the interior, which can easily lead to the failure of repairing the exterior walls of the basement, resulting in high maintenance costs

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