Structural design and construction method of a partially assembled subway station

Abstract

The invention discloses a structural design and construction method of a partially assembled subway station, comprising an open-cut foundation pit and its enclosure structure, a cast-in-place bottom plate and bottom beams, a cast-in-place side wall, a laminated middle plate, a prefabricated column, and a prefabricated beam , Prefabricated arched roof. The station floor and side walls are poured on site, and the outer side walls use the enclosure structure as a formwork to achieve an integrated design with the enclosure structure. The prefabricated columns and prefabricated beams of the station are connected through grouting sleeves, the middle plate is constructed using laminated plate technology, and the arched roof is prefabricated in the factory and transported to the site for assembly. The prestressed arched roof distributes the vertical load to the side walls and the enclosure structure, which reduces the axial compression ratio of the key components of the underground structure, the structural force is more reasonable, and the seismic performance is better; compared with the fully prefabricated station structure , the number of splicing seams of the prefabricated components of the present invention is small, which is beneficial to improving the waterproof effect of the subway station. The invention has simple structure and convenient installation, and conforms to the trend of building industrialization.

Description

technical field [0001] The invention relates to the field of civil engineering design and construction, in particular to the field of underground assembly structures, in particular to a structural design and construction method of a partially assembled subway station. Background technique [0002] my country's urban rail transit construction speed and scale rank first in the world, and traditional construction methods have been difficult to meet the rapid development of urbanization. At present, open excavation combined with on-site pouring is still the main method of subway station construction, which is economical, safe and reliable in quality. However, the open-cut and cast-in-place method has problems such as long construction period, serious impact of construction road occupation on ground traffic, large loss of turnover materials, serious noise and dust pollution, and the construction process is easily affected by climatic conditions, which cannot meet the requirements...

AI Technical Summary

Problems solved by technology

Under the action of horizontal earthquakes, the deformation of the column and the side wall is uncoordinated. Due to the insufficient deformation capacity of the column, bending and shear failure occurs and the vertical bearing capacity is lost, which leads to the overall collapse of the station structure

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