Analysis of the Structural Dynamic Response of Near-fault Shallow-buried Tunnel
Currently,the quantitative standardization of seismic motion in near-fault sites in seismic design specifications is relatively rough,and the research on the dynamic interaction between fault sites and underground tunnel structures is still unclear.Therefore,a hybrid boundary element finite element method(IBEM-FEM)is proposed for in-depth study of dynamic analysis of near-fault tunnel structures.Using the indirect boundary element method(IBEM)to simulate ground motion near-fault sites with high accuracy,and based on this,combining viscous-spring artificial boundaries and external wave input methods of equivalent loads,ANSYS finite element software is used to construct numerical analysis models of tunnels and adjacent soil and solve them.Verify the reliability of the research method through the validation of the example model.At the same time,parameterization analysis of fault distance and fault dip angle is conducted to study the influence of fault parameters on the dynamic response of tunnel structures.
tunnelsnear-faultground motiondynamic responseboundary element methodfinite element method
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