Reclaimable foundation pit bracing system and construction method thereof

Abstract

The invention relates to a reclaimable foundation pit bracing system, comprising bracing tubular piles, a tubular pile connection fixing device and a tubular pile lateral support device. The reclaimable foundation pit bracing system adopts the tubular pile connection fixing device to connect bracing tubular piles together so as to ensure that the bracing tubular piles are connected in lines to form horizontal restriction and vertical restriction, and uses the tubular pile lateral support device to laterally restrict the tubular piles so as to prevent soil body from extruding and collapsing the bracing tubular piles towards the foundation pit, thus being applicable to the construction of a large scale foundation pit. The tubular pile lateral support device and the tubular pile connection fixing device are dismantled after the construction and the tubular piles are recycled, thus greatly saving construction materials and reducing the construction cost of foundation pit timbering shoring. The invention also provides a construction method of the above reclaimable foundation pit bracing system.

Description

technical field [0001] The invention relates to a foundation pit protection system, in particular to a recyclable foundation pit protection system; at the same time, the invention also relates to a construction method of the foundation pit protection system. Background technique [0002] The enclosure structure of foundation pit engineering is generally a vertical retaining structure, and the retaining structure is a pile wall structure with a certain insertion depth under the base of the excavation surface. In our country, there are bored cast-in-situ piles, hole-digging piles, deep mixing piles, rotary grouting piles, and underground diaphragm walls. In the construction of the above enclosure structures, all the reinforced concrete building materials are invested at one time. After the project is completed, they are buried underground and no longer function, resulting in huge waste of materials and energy. As a soil retaining structure, steel sheet piles can be recycled a...

AI Technical Summary

Problems solved by technology

In the construction of the above enclosure structure, all the reinforced concrete building materials are invested at one time, and buried in the ground after the completion of the project, it will no longer function, resulting in huge waste of materials and energy

Steel sheet piles can be recycled and used multiple times as a retaining structure, but their rigidity is insufficient and their deformation is large. They are only used for small foundation pit support of about 3-4 meters, and their scope of application is limited.

Images