Pipe jacking method assembly type anti-floating subway station

Abstract

The pipe jacking method assembly type anti-floating subway station comprises a reinforced soil body and box bodies, the box bodies are symmetrically arranged along the reinforced soil body, each box body is formed by alternately splicing a first assembly and a second assembly, a connecting opening is formed in each second assembly, and a channel reinforced steel-concrete frame is fixedly arranged along the inner circumference of each connecting opening; the positions of the connecting openings in the box bodies on the two sides of the reinforced soil body are opposite, a connecting channel is further arranged between the two box bodies, the two ends of the connecting channel are fixedly connected with the channel reinforced steel-concrete frame, an uplift pile is arranged in the reinforced soil body below the connecting channel, and the top of the uplift pile is fixedly connected with the bottom of the connecting channel. According to the construction method of the pipe-jacking fabricated subway station, a traditional foundation pit enclosure structure and a supporting system are not needed, a road surface is not excavated, traffic is not closed, pipelines are not migrated, the occupied area is small, the anti-floating requirement of the subway station in a water-rich soft soil area can be met, the technical defect of underground excavation of the fabricated station is overcome, and the safety risk of underground engineering construction is reduced.

Description

technical field [0001] The invention belongs to the technical field of underground structures and construction, and in particular relates to an assembled anti-floating subway station by pipe jacking method. Background technique [0002] With urban expansion and population growth, the urban subway network is becoming more and more dense, and the pace of construction needs to be accelerated. Prefabricated assembly technology, as an industrial construction mode of underground structures, has significant advantages in improving project quality, speeding up construction, reducing floor space, saving materials, saving labor, environmental protection and low carbon, etc., in line with national policy orientation and strategic needs. At present, the subway prefabricated stations have been implemented in China, and the construction of subway stations is generally divided into open-cut method and underground method. The open excavation method generally needs to occupy the road, whic...

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Problems solved by technology

The open excavation method generally needs to occupy the road, which affects the travel of residents. In addition, the pipeline relocation, etc., the social and economic benefits are not significant; The construction can be carried out by excavating the road surface, without closing the traffic, and without moving the pipeline. However, since the covering soil on the top of the subway station is generally shallow, in the water-rich soft soil area, the open-cut method station generally adopts the ground connection wall combined with the top beam to realize the anti-floating of the subway station. , but the anti-floating construction of the station using the underground excavation method is relatively difficult, so we need to design an assembled anti-floating subway station by the pipe jacking method to solve these problems

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