A Common Ditch Seismic Isolation System

Abstract

The invention provides a utility tunnel shock insulation system which comprises an outer shock insulation layer. The outer shock insulation layer is arranged on the periphery of a utility tunnel concrete layer and is attached to the utility tunnel concrete layer. The outer shock insulation layer comprises a first coarse sand layer and a first asphalt layer, one face of the first coarse sand layeris attached to the utility tunnel concrete layer, and the other face of the first coarse sand layer is attached to the first asphalt layer. One face of the first asphalt layer is attached to the firstcoarse sand layer, and the other face of the first asphalt layer is attached to a soil layer. The sand of the first coarse sand layer is coarse sand with the grain size not smaller than 0.5 mm. The first asphalt layer is a mixture of coal pitch and petroleum asphalt. The large-grain-size coarse sand layer is coarse in surface, and particles have multiple corners. When resultant external force exceeds the maximum static friction force of the coarse sand layer, the coarse sand layer starts to slide, the impact force of an earthquake is consumed, the impact of earthquake waves is greatly consumed, and the coarse sand layer can be prevented from liquefying through the asphalt layer. The outer shock insulation layer covers the two side faces of the utility tunnel concrete layer and the groundsurface in a U shape, and the earthquake waves transferred from the underground and the side faces are prevented well.

Description

technical field [0001] The present invention relates to a seismic isolation system, and more specifically relates to a common ditch seismic isolation system. Background technique [0002] The common trench is a comprehensive corridor of urban underground pipelines. It is a tunnel structure that centrally accommodates various public pipelines installed on the ground, underground or overhead, and leaves a passageway for maintenance personnel. That is to build a tunnel space underground in the city, integrate various pipelines such as municipal, electric power, communication, gas, and drainage, and set up special inspection ports, hoisting ports, and monitoring systems, and implement unified planning, design, construction, and management. It has completely changed the chaotic situation in which each pipeline was constructed and managed separately in the past. When each pipeline needs to be opened, it is only necessary to notify the relevant responsible department and connect t...

AI Technical Summary

Problems solved by technology

The one-time investment in the construction of the common trench is very high, and if it is destroyed in an earthquake, it will cause serious pipeline damage, supply interruption, and major economic losses

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