Box-culvert subway station and near-surface structure crossing ground fissure experimental system and box-culvert subway station and near-surface structure crossing ground fissure experimental method

Abstract

The invention discloses a box-culvert subway station and near-surface structure crossing ground fissure experimental system and a box-culvert subway station and near-surface structure crossing groundfissure experimental method. The method comprises the following steps: establishing a subway station and near-surface frame structure model at a scale ratio of 1 to 40, and arranging strain gauges around stations and on cross beams, horizontal plates and vertical columns; adopting a shear model soil box to simulate a ground fissure site, and arranging accelerometers, earth pressure gauges and thelike in the soil layer to analyze the distribution law of soil body under the earthquake action of the ground fissure site; hoisting and burying a subway vehicle in the predetermined position of the soil body, and enabling the subway stations to span ground fissures; filling the soil body at the upper parts of the subway stations, and lifting the upper part structures to the preset locations. Thesystem and the method well solve the problem of how to make and simulate subway station and near-surface structure which spans the ground fissures, so that a basis is provided for the feasibility study of the construction of lifeline projects such as subway stations which pass through ground fissures which have weaker activity or tend to be stable.

Description

technical field [0001] The invention belongs to the technical field of ground fissure experiments, and in particular relates to a box-culvert-type subway station and a ground fissure experiment system and method adjacent to the ground surface structure. Background technique [0002] Ground cracks are ground cracks caused by drought, groundwater level drop, land subsidence, seismic tectonic movement or slope instability, and are a special geological disaster. Ground fissures have been recorded in many countries in the world, and their occurrence frequency and disaster degree are increasing year by year, and they have become a new and independent type of natural disaster. Its appearance not only causes catastrophic direct damage to various construction projects, transportation facilities, urban lifeline projects and land resources, but also may lead to a series of serious ecological and environmental problems. Therefore, it is of great theoretical significance and engineering...

AI Technical Summary

Problems solved by technology

However, in the prior art, there is no relatively complete experimental system and method for crossing ground fissures between box culvert stations and adjacent surface structures.

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