Pipe curtain cover excavation reverse construction method for subway station construction

Abstract

The invention discloses a pipe curtain cover excavation reverse construction method for subway station construction. The method comprises the steps that firstly, a cover excavation mode is adopted forright line or left line excavation of a subway station; after a right line or left line of the subway station is subjected to cover excavation to a preset position, a pipe curtain is jacked from an excavation line to a non-excavation line to form a shed cover structure; soil below the shed cover structure is excavated out, and a working face is provided for a construction top plate; and then, a cover excavation reverse construction method is adopted, and all layers of plate beams of the station are sequentially constructed. According to the pipe curtain cover excavation reverse construction method, the supporting effect of a transverse pipe curtain structure is utilized, bearing of the dead load of soft soil of a water-rich sand layer above the transverse pipe curtain structure and the live load of traveling vehicles and pedestrians is achieved, meanwhile, effective avoiding of complex underground pipelines in overlying soil can be achieved, and inconvenience brought to pedestrian traffic due to the fact that the ground is excessively occupied is avoided.

Description

technical field [0001] The invention belongs to the technical field of engineering, and in particular relates to an excavation and reverse construction method for a pipe curtain cover used in the construction of a subway station. Background technique [0002] At present, in the construction of subway stations, the common methods include open-cut method, cover-excavation method, mine method and reverse method. There are many constraints in the construction of urban subway stations. For example, if there are important buildings on the ground, the ground settlement caused by construction must be strictly controlled. There are many existing underground pipelines that cannot be damaged, and the ground traffic is too heavy to be excessively fenced. Therefore, when choosing a construction method for the construction of a subway station, there will be many problems. For example, using the open-cut method will cause traffic congestion and affect the surrounding environment. Simply us...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problems existing in the prior art, the present invention provides a construction method for pipe curtain cover digging and reverse construction for the construction of subway stations, so as to solve the traffic congestion caused by the open cut method in the prior art and the influence on the surrounding environment. Simply adopting the reverse method is low in construction efficiency and cannot avoid important pipelines, and the technical problems of using the pipe curtain method and the pipe jacking method require a large working space

Images