Construction method for early warning supporting system adjacent to running subway in complex environment

Abstract

The invention discloses a construction method for an early-warning supporting system adjacent to a running subway in a complex environment. The construction method includes the steps that firstly, two rows of stirring piles are arranged on the inner side and the outer side of a building even wall planned to be built correspondingly for supporting; secondly, the building even wall is built between the two rows of stirring piles; thirdly, supporting of multiple first high-pressure rotary spraying piles and multiple secondary high-pressure rotary spraying piles is adopted on the outer side of a subway station even wall and the outer side of the building even wall correspondingly through high-pressure rotary spraying; fourthly, a sleeve valve tube system is installed at the interface of the outer side of the subway station even wall and the outer side of the building even wall; fifthly, a circle of cap beam is poured on the top of the building even wall; and sixthly, a foundation pit is dug on the inner side of the building even wall in a layered manner. In the digging process of the foundation pit, if a clinometer installed on the subway station even wall sends out a deformation pre-warning signal, a grouting system of the sleeve valve tube system is started immediately till the pre-warning signal is stopped, and then construction is continuously conducted. According to the construction method, stable establishment of the pre-warning supporting system is ensured.

Description

technical field [0001] The invention relates to a construction method for an early warning support system, in particular to a construction method for an early warning support system in a complex environment adjacent to an operating subway. Background technique [0002] With the large-scale construction of urban subways, the safe operation of subway stations has become a subject of increasing concern. The purpose of establishing a good subway environment is to provide a safe and comfortable riding environment. If the proposed building is close to the running subway, and the foundation pit of the proposed building is a special-shaped deep foundation pit at the corner, a safe and reliable early warning support system must be specially established during construction. Once the deformation of the running subway exceeds the allowable value, the early warning support system should be activated immediately. [0003] The Chinese patent with the application number CN200910039944.9 d...

AI Technical Summary

Problems solved by technology

This patent discloses the construction method of the "Y" type rock-socketed groove section of the underground diaphragm wall. Plastic concrete piles are installed at the two vertical corners to connect with the cement-soil deep-layer mixing piles on both sides, which is not suitable for the surrounding subways that are in operation. Construction of early warning support system for deep foundation pits at stations and corners of special-shaped foundation pits with complicated geology

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