The Analysis of the Insufficient Lining Thickness and Cavity on Tunnel

Deformation

Jiwei HEI

Civil Construction Department of Chongqing Jiaotong University, Chongqing 400074, CHINA

Abstract: With the expansion of the construction of highway, insufficient lining thickness and cavity defect become commonplace in the tunnel operation. Based on the "formation - Structure" method for simulation for different parts and different defect degrees of the tunnel, this article analyze the model of insufficient lining thickness combine with cavity and the single model of the insufficient lining thickness on the level of convergence and vault settlement by the finite element analysis software MIDAS / GTS.

Keywords: Tunnel lining; Insufficient lining thickness; Deformation; Numerical analysis