A kind of subway tunnel system and construction method for vibration reduction and noise reduction

Abstract

The present disclosure relates to a vibration-damping and noise-proof subway tunnel system and a construction method, including a tunnel lining, wherein a plurality of vibration-damping holes penetrating the side walls of the tunnel are provided, and the vibration-damping holes are provided with a porous Duxseal material , the end of the vibration damping hole close to the outer wall of the tunnel lining is blocked. The vibration damping hole is used to absorb and attenuate the medium and low frequency vibration of the side wall and inner cavity of the tunnel lining. Duxseal material is used to absorb and attenuate the side wall and inner cavity of the tunnel lining. high frequency vibration. Multiple rows of vibration isolation tubes are arranged in the soil layer below the tunnel lining along the advancing direction of the tunnel. Each row of vibration isolation tubes is vertically arranged and perpendicular to the advancing direction of the tunnel. The vibration isolation tubes are filled with rubber particles, and the adjacent rubber particles are filled with rubber particles. There is a gap between them, which can realize the secondary attenuation of the vibration transmitted from the tunnel lining into the soil layer. The invention improves the vibration damping effect through the combination of two porous structures and high frequency vibration damping materials, reduces the influence of medium and low frequency vibration on surrounding buildings, and also attenuates high frequency noise in the tunnel.

Description

technical field [0001] The present disclosure belongs to the technical field of tunnel construction, and in particular relates to a vibration-damping and noise-proof subway tunnel system and a construction method. Background technique [0002] Subway transportation has the functions of low energy consumption, less pollution, safety and comfort, and plays an important role in solving urban traffic congestion and protecting the environment. But people are increasingly reacting to the vibration and noise problems caused by subway traffic. The main reason for this is that subway lines pass through densely populated areas of the city, downtown areas with many buildings, scenic areas, etc., and a small number of subway lines also pass through residential areas, ancient buildings, etc. When the subway trains run, the buildings, Residents and people in the carriage will be affected by vibration and noise from the ground or the ground caused by the train's operation. [0003] The i...

AI Technical Summary

Problems solved by technology

The vibration isolation materials added between rails and sleepers mainly include rubber vibration isolation pads and floating plate vibration isolation systems. The rubber vibration isolation pads have a simple structure and are convenient for construction, but their vibration isolation effect is small. The vibration effect is good but the cost is too high; the laying of rubber ballast pads can reduce the vibration of the track wall, but it will increase the deformation of the rail and increase the cost of maintenance and repair in the later stage; the barrier vibration isolation usually adopts empty trenches, filled trenches, row piles, etc. It can cut off the propagation of vibration waves and achieve the ideal vibration isolation effect, but its construction is complicated and the cost is too high

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