An anti-seepage foundation pit support structure and construction method

Abstract

The invention relates to an anti-seepage foundation pit supporting structure and a construction method. The anti-seepage foundation pit supporting structure is characterized in that a vertical water interception layer is arranged on the sidewall of a foundation pit, and a pit bottom water interception layer and a pit bottom counter-force pile are arranged at the bottom of the foundation pit; the vertical water interception layer is composed of a vertical concrete pile and a composite water interception plate; a prefabricated plate tip is arranged at the bottom of the composite water interception plate, a vertical connection slot and a transversal connection slot are formed in a vertical sectioned part and a longitudinal sectioned part of the composite water interception plate respectively, and a transversal stiffened plate and a vertical stiffened plate are arranged on the sidewall of the composite water interception plate; and a transversal stiffened body is arranged at the intersection part of the transversal stiffened plate and the vertical stiffened plate. The anti-seepage foundation pit supporting structure disclosed by the invention has the following advantage: seepage failure of the foundation pit can be prevented, and settlement deformation of surrounding buildings of the foundation pit can be effectively controlled by forming a three-dimensional airtight waterproof structure around the foundation pit. The invention further discloses a construction method for the anti-seepage foundation pit supporting structure.

Description

technical field [0001] The invention relates to an anti-seepage water foundation pit support structure and a construction method, in particular to an anti-seepage water foundation pit support structure which can effectively block the groundwater seepage path around the foundation pit and reduce the settlement deformation of buildings outside the foundation pit and Construction method. It belongs to the field of underground engineering and is suitable for foundation pit support projects, especially for foundation pit support projects with high groundwater level, poor geological conditions, and strict deformation control of surrounding buildings. Background technique [0002] In the process of foundation pit excavation, in order to reduce the water level in the pit, it is often necessary to carry out drainage in the foundation pit and precipitation around the foundation pit. Although these engineering measures help to enhance the stability of the foundation pit and reduce the ...

AI Technical Summary

Problems solved by technology

Leakage is prone to occur at the contact surface between the structural steel plate and concrete and at the structural nodes, and the structural connection is difficult and the support cost is high

[0006] In summary, although the existing foundation pit support waterproof structure has achieved good engineering results under suitable working conditions, there are still some deficiencies, especially in the prevention of foundation pit penetration damage and the deformation control of surrounding buildings.

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