Rolling friction support for supporting columns of underground subway station

Abstract

The invention discloses a rolling friction support for supporting columns of an underground subway station. The rolling friction support is mainly composed of a lower connecting plate, a lower base plate, a stainless steel arc plate, balls, steel bars, an upper base plate, an upper connecting plate and a dustproof cover. The lower connecting plate is fixed to the lower end face of the lower base plate, the stainless steel arc plate is fixedly installed in semi-cylindrical grooves and provided with a plurality of long-strip-shaped grooves, the steel bars, the balls and the upper base plate arein rolling contact, the dustproof cover is embedded in a fixing inserting groove and forms a closed space with the upper base plate, a connecting channel is formed in the lower base plate, the long-strip-shaped grooves are in communication with oil injection holes through the connecting channel, and the upper connecting plate is fixed to the upper end face of the upper base plate. Free sliding ofthe supporting columns and cross beams of the underground subway station is achieved through the rolling friction support, and relative horizontal deformation of the supporting columns under the earthquake action is reduced. The rolling friction support is clear in concept, clear in principle, high in vertical bearing capacity, easy to produce, convenient to maintain and long in service life.

Description

technical field [0001] The invention relates to the construction field of underground structural engineering, in particular to a rolling friction bearing used for supporting columns of underground subway stations. Background technique [0002] With the continuous advancement of the urbanization process in various countries in the world, the scale of cities continues to expand, and the resulting problems such as population aggregation, traffic congestion, environmental pollution, and resource shortages have become increasingly prominent. The development and utilization of underground space has become an important way to alleviate the pressure of urban ecological environment and challenge the living space, and has become a hot spot of concern. At present, most cities in the world have built various underground structural facilities including subway networks, comprehensive pipe corridors, underground shopping malls, etc. These underground structural projects have been widely us...

AI Technical Summary

Problems solved by technology

Relevant studies have shown that the vertical key support column is the weak link in the seismic resistance of the underground frame structure. Under the joint action of horizontal and vertical earthquakes, the vertical inertia effect of the overlying soil that has been sheared and damaged is enhanced, which significantly increases the dynamics of the support column. The axial compression ratio greatly weakens its ability to resist shear deformation, and the damage occurs before the side walls, resulting in the collapse of the roof and finally the overall collapse of the structural system.

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