Numerical and analytical solution of stresses on a box-type lining structure under the effect of ground fracture

W Huang^{1, 2}, D Y Liu^{1, 2, 3}, H F Jiang^{1, 2}, F Y Liu^{1, 2}

COMPUTER MODELLING & NEW TECHNOLOGIES 2014 18(5) 269-274

¹College of Civil Engineering, Chongqing University, Chongqing, China, 400045
²Key Laboratory of New Technology for Construction of Cities in Mountain Area (Chongqing University) Ministry of Education, Chongqing, China, 400045
³School of Civil Engineering and Architecture, Chongqing University of Science & Technology Chongqing, Chongqing, China, 401331

This study attempts to study the stress mechanism of a box-type lining structure during its inclined penetration of ground fissure and calculate the normal stress and shearing stress of the structure section. Based on thin-wall structure theory combined with the stress boundary conditions of the physical model of the box-type lining structure, we derived the analytical solution of the normal stress and shearing stress of the physical model. The stress analytical solution indicates that the damage of the footwall of the ground fissure is more serious than that of the hanging wall, which could match the physical model experiment. The effectiveness and accuracy of the analytical solution of the normal stress and shearing stress of the section were verified using finite element software to establish the mechanical model of the box-type lining structure. The results of the numerical model were compared with the analytical solution results.