Dynamic response of a non-circular lined tunnel with visco-elastic imperfect interface in the saturated poroelastic medium
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- 作者：Xue-Qian Fang ; stduxfang@yeah.net ; He-Xin Jin
- 关键词：Non-circular lined tunnel ; Saturated poroelastic medium ; Visco-elastic interface ; Conformal transformation method ; Dynamic stress
- 刊名：Computers and Geotechnics
- 出版年：2017
- 出版时间：March 2017
- 年：2017
- 卷：83
- 期：Complete
- 页码：98-105
- 全文大小：822 K
- 卷排序：83
文摘
A semi-analytical method is proposed to investigate the dynamic response of a non-circular tunnel with visco-elastic imperfect interface in poroelastic medium. Biot’s dynamic theory is used to simulate the saturated poroelastic medium, and the governing equations are solved by reducing them into three Helmholtz equations that the potential functions satisfy. The visco-elastic interface model with elastic and viscosity coefficients is adopted to analyze the interface effect around the non-circular lined tunnel. The analytic solutions of displacements and stresses are expanded in terms of wave functions. Some numerical examples are provided to analyze the effect of visco-elastic interface on the dynamic stress around the tunnel.