Construction method of foundation pit enclosure support system

Abstract

The invention relates to a construction method of a foundation pit enclosure support system, comprising: step 1, construction of the foundation pit enclosure structure; step 2, construction of crown beams; step 3, construction of enclosure pile end nodes; step 4, first step Waist beam construction; step 5, erecting the first support; step 6, digging and supporting to the design elevation of the foundation pit; step 7, rapid repair of foundation pit leakage. The beneficial effects of the present invention are: the prefabricated prefabricated reinforced concrete enclosure structure adopted in the present invention only needs to assemble the structure on site, which shortens the construction period and speeds up the construction progress compared with the traditional enclosure structure that needs to be cast-in-place. It has good technical and economic benefits; in the invention, the enclosure structure and the prestressed cover beam are strengthened and connected, which can make the upper part of the enclosure structure connected as a whole, greatly improve the stability of the upper part of the enclosure structure, and have remarkable technical benefits.

Description

technical field [0001] The invention relates to the technical field of foundation pit engineering, in particular to a construction method for a foundation pit enclosure support system. Background technique [0002] Since the reform and opening up, with the rapid development of my country's social economy, the scale of urban construction in our country has become larger and larger, and the urban population has also increased. Following this, the problem of urban traffic congestion has been alleviated, so many emerging cities have begun to build Subway, the number of subway lines in more developed first- and second-tier cities is also increasing. As an auxiliary project for subway station construction, the support system is of great significance for ensuring construction quality and safety. [0003] The support of traditional subway station foundation pits adopts enclosure piles and underground diaphragm walls as enclosure structures, and usually adopts the cast-in-place metho...

AI Technical Summary

Problems solved by technology

[0003] The support of traditional subway station foundation pits adopts enclosure piles and underground diaphragm walls as enclosure structures, and usually adopts the cast-in-place method, which has a slow construction speed and a long construction period, especially the concrete pouring and vibration are difficult and easy Problems such as pouring quality, such as shrinkage of enclosure piles, unsuitable wall thickness, etc.

It takes a lot of manpower and material resources to complete the construction

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