Structure system for controlling deformation of subway shield tunnels and construction method thereof

Abstract

The invention provides a structure system for controlling deformation of subway shield tunnels and a construction method of the structure system for controlling deformation of the subway shield tunnels. The structure system comprises a foundation pit support, a base structure, a group of wall bodies and a structure top plate. The foundation pit support is arranged on one side of the subway shieldtunnels and comprises double rows of piles, a group of diagonal bracings and diagonal bracing foundations. The double rows of piles are arranged at intervals in the extension direction of the subway shield tunnels, and an interval exists between the double rows of piles and the subway shield tunnels. The elevation of the top face of the double rows of piles is not lower than the elevation of the bottom face of the base structure. The diagonal bracing foundations are parallel to and spaced with the double rows of piles. The top face of the diagonal bracing foundations is lower than the top faceof the double rows of piles. The group of diagonal bracings are arranged in parallel at intervals between the diagonal bracing foundations and the double rows of piles. The base structure is arrangedon the upper side of the subway shield tunnels. The group of wall bodies are arranged on the top of the base structure in a spaced manner. The structure top plate covers the tops of the group of wallbodies. The structure system for controlling deformation of the subway shield tunnels solves the technical problems that by the adoption of a traditional foundation pit construction method, a dug area can generate large upward floating deformation, and the safety of a to-be-constructed building is harmed.

Description

technical field [0001] The invention relates to the field of tunnel engineering construction, in particular to a structural system for controlling the deformation of a subway shield tunnel and a construction method thereof. Background technique [0002] With the large-scale development of urban rail transit and the development and construction of municipal facilities, there are more and more projects to build new structures such as underground squares or transfer centers in the area above the operating subway. The traditional construction method is to add mixing piles to the construction area. The surrounding soil of the shield tunnel is reinforced, and then the foundation pit is enclosed, which can prevent the lateral movement of the soil from affecting the side wall of the shield area to a certain extent, but this maintenance method has great disadvantages. For example, the pile maintenance structure around the shield tunneling area only maintains the shield tunneling area...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a structural system and construction method for controlling the deformation of subway shield tunnels, to solve the technical problems that the excavation area of ​​the traditional foundation pit construction method will cause large floating deformation and endanger the safety of the building to be constructed

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