On subsurface box-shaped lined tunnel under incident SH-wave propagation

作     者：Mehdi PANJI Saeed MOJTABAZADEH-HASANLOUEI Mehdi PANJI;Saeed MOJTABAZADEH-HASANLOUEI

作者机构：Department of Civil EngineeringZanjan BranchIslamic Azad UniversityZanjan45156-58145Iran 

出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)

年 卷 期：2021年第15卷第4期

页      面：948-960页

核心收录：

学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）] 

主　　题：box-lined tunnel half-plane BEM surface response SH-wave time-domain 

摘      要：In this paper,a half-plane time-domain boundary element method is applied to obtain the seismic ground response,including a subsurface box-shaped lined tunnel deployed in a linear homogenous elastic medium exposed to obliquely incident *** the boundary around the tunnel is required to be *** prepare an appropriate model by quadratic elements,a double-node procedure is used to receive dual boundary fields at corners as well as change the direction of the normal *** encoding the method in a previously confirmed computer program,a numerical study is carried out to sensitize some effective parameters,including frequency content and incident wave angle for obtaining a surface *** depth and impedance ratio of the lining are assumed to be *** responses are illustrated in the time and frequency domains as two/three-dimensional *** results showed that subsurface openings with sharp corners distorted the propagation path of the anti-plane waves to achieve the critical states on the ground *** present approach can be proposed to civil engineers for preparing simple underground box-shaped models with angular boundaries.