Study On The Interaction Characteristics And Earthquake Resistant Construction Of The Tunnel And Surrounding Rock Under Movable Fault

In recent years,the rapid development of subway industry in our country,the subway in the big city needs the subway construction is due to grow with each passing day,to facilitate people's travel and ease the traffic pressure,therefore,the choice of the line,the subway tunnel may need inevitably across the fault zone.How to ensure the activity of crossing fault broken subway tunnel belt in fault under the earthquake does not collapse and post earthquake safety requirements can be built,for the industry has brought new challenges,has the practical significance.The subway tunnel in Urumqi Metro Line 2 as the research object,using the finite element analysis software ABAQUS,establish the model with the broken tunnel crossing active faults,seismic and vibration analysis and Research on the line 2 subway tunnel.First,Outlines the current crossing the active fault fracture zone tunnel seismic research development status,summarized the domestic and foreign relevant of underground tunnel seismic and fault fault resistance research method and the calculation theory,and choose the reasonable calculation theory and method.combined with the actual working condition,fault activities are different width,fault rupture forms and lining displacement under the different way of constraint,force characteristics and regularity,put forward the reasonable range of fault fortification.Again,the different thickness of damping layer,and different length of tunnel segment contrast and analysis,summarized the reasonable seismic design measures are put forward.In the final analysis the tunnel under the condition of setting aseismic measures overall stability and security.The results of the study for seismic design of urumqi subway crossing the active fault and similar engineering construction to provide the reference.