Earthquake protection devices and support systems for subway tunnels

Abstract

The invention provides an earthquake protection device applied to subway tunnels and a subway tunnel support system, belonging to the technical field of tunnel protection. The earthquake protection device applied to the subway tunnel includes a main buffer, a secondary buffer and a force transmission mechanism; the main buffer is used to connect the primary lining and the secondary lining of the tunnel; the secondary buffer has a fixed end and a stress end, and the fixed end and the main buffer The side wall of the device is fixedly connected; the force transmission mechanism is used to connect the primary lining and / or the secondary lining and the force-bearing end of the secondary buffer, so as to transfer part of the stress between the primary lining and the secondary lining to the secondary buffer, reducing the main The stress on the buffer. The invention also provides a subway tunnel supporting system. The earthquake protection device and subway tunnel support system applied to subway tunnels provided by the present invention are different from the previous protection concept, and the inner and outer linings are flexibly separated, and at the same time, the stress burden of the main buffer is effectively reduced, and the occurrence of earthquakes in the tunnel is reduced. The risk of Y-direction tension and compression damage.

Description

technical field [0001] The invention belongs to the technical field of tunnel protection, and more specifically relates to an earthquake protection device and a support system for a subway tunnel. Background technique [0002] With the improvement of my country's comprehensive national strength and the growth of population, the domestic demand for relieving traffic pressure is becoming increasingly urgent. As a kind of engineering building buried underground, subway is being widely built in my country's transportation engineering construction. In the past, most scholars generally believed that subway tunnels had better seismic performance due to the constraints of surrounding rocks. However, the multiple destructive earthquakes that occurred in recent years have forced us to focus on the seismic and disaster resistance of subway tunnels again. [0003] At present, there are two main anti-seismic measures for subway tunnels: 1. Set anchor rods in the surrounding rock and inje...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide an earthquake protection device and a subway tunnel support system applied to subway tunnels, aiming to solve the technical problem of poor seismic effect of current subway tunnel earthquake-proof measures

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