Shock insulation structure for separating upper story and lower story in two-story station

Abstract

The invention provides a shock insulation structure for separating the upper story and the lower story in a two-story station. The shock insulation structure comprises a middle plate, side walls and amiddle column. The side walls are connected with the middle plate through ox horn legs. Friction sliding supports are arranged between the middle plate and the ox horn legs. A longitudinal beam of the middle plate is connected with the top end of the middle column through a lead core shock insulation support. According to the shock insulation structure for separating the upper story and the lowerstory in the two-story station, the damage degree of a two-story subway underground station structure in a strong earthquake can be greatly reduced, and therefore the overall anti-seismic property ofthe two-story subway underground station structure is improved.

Description

technical field [0001] The invention relates to the technical field of shock-isolation structures in subway stations, in particular to a shock-isolation structure in which an upper layer and a lower layer in a two-story station are separated. Background technique [0002] Earthquake damage to existing underground structures can be traced back to the Great Kanto Earthquake in Japan in 1923. The water supply pipes in Tokyo were severely damaged in the earthquake, and cracks in the lining of Nanwugu Tunnel spread throughout the tunnel (Yuan Yong et al., 2014). During the Great Tangshan Earthquake in 1976 in my country, the bases of many pillars in the underground clear water pool of Tangshan Beijiao Waterworks were shaken, the cement peeled off, and the steel bars were exposed. After the Mexico earthquake in 1985, researchers also observed some slight cracks in subway stations and tunnels. These cracks are mainly distributed in the connection between subway tunnels and station ...

AI Technical Summary

Problems solved by technology

However, the theory and method of active and passive control of seismic isolation structures based on the assumption of rigid foundations is difficult to apply to the specific requirements of seismic isolation of underground structures

At the same time, it is difficult to use seismic isolation devices to completely separate the underground structure from the surrounding foundation soil, and it is also difficult to reduce its seismic response by prolonging the period of the underground structure

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