Mountain tunnel anti-seismic analysis method

Abstract

The invention discloses a mountain tunnel anti-seismic analysis method. For the aspect of cross section anti-seismic analysis of a tunnel, based on a stratal elastic shear deformation theory, horizontal stratum deformation, vertical stratum deformation and seismic self-weight inertial force of broken rock bodies at the top of the tunnel are considered at the same time, and related problems of tunnel cross section seismic resistance are studied; and for the aspect of longitudinal overall anti-seismic analysis of the tunnel, an elastic foundation beam is taken as a model, interaction of the tunnel and surrounding rocks is considered, a dynamic balance equation of a tunnel structure is created according to an anti-seismic dynamic theory and a deformation transfer theory by utilizing continuum mechanics, and a classic seismic deformation method is a particular case of the method. According to the method, the cross section anti-seismic analysis and the longitudinal overall anti-seismic analysis of the mountain tunnel are performed by adopting unified thought for the first time; the thought is novel; the method is feasible; and through example verification, the method has relatively good applicability for mountain tunnel primary design under the action of strong earthquake.

Description

technical field [0001] The invention belongs to the technical field of anti-seismic analysis of tunnels, in particular to a method for anti-seismic analysis of mountain tunnels. Background technique [0002] With the in-depth promotion of the western development strategy, the infrastructure construction in the western region of my country will be vigorously developed, especially the road and railway transportation construction will be developed by leaps and bounds, so many tunnels will inevitably be built. Most of these areas are in high-intensity areas. It is of great strategic importance to ensure the normal function of tunnel engineering during earthquakes. Especially the earthquake damage of the subway in the "Hanshin" earthquake in Japan and the severe earthquake damage of the 109 tunnel in the "5.12 Wenchuan" earthquake in China have made people have a clearer understanding of the earthquake damage of underground engineering. [0003] The seismic analysis methods of mo...

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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method for seismic analysis of mountain tunnels, aiming at solving the problem of mountain tunnels under the action of strong earthquakes, using relatively simple methods and procedures for the preliminary design of mountain tunnels, and providing engineering designers with the necessary design Questions about parameters and data

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