The Mechanism of Deformation on Tian-Liao No.3 Viaduct and Chung-Liao Tunnel [跨???道三?田寮3 ??与中寮隧道北口段?形机制]
Journal
Journal of the Chinese Institute of Civil and Hydraulic Engineering
Journal Volume
30
Journal Issue
1
Pages
17-28
Date Issued
2018
Author(s)
Abstract
Tian-Liao No.3 Viaduct on the National Highway No.3, and Chung-Liao Tunnel cross Chekualin Fault and Chishan Fault respectively. Due to continuous deformation, they have not been improved efficiently even if repeated maintenance since it opened to traffic in 2000 till now. In this study, the software PFC3D (Particle Flow Code 3 Dimension) of the discrete element method was used to establish the model of the interaction between the fault and the bridge/tunnel. The mechanical parameters of the structure and the material of soil layer were also introduced to simulate the interaction behavior between the overburden soil and the structure which is caused by the relative displacement of Chekualin Fault. This study shows that the relative displacement at the deeper level of Chekualin Fault causes the deformation of the trishear zone at the shallow mudstone and accompanied back thrust fault, and it may be used as an interpretation for the deformation characteristics of Tian-Liao No.3 Viaduct on the National Highway No.3, or Chung-Liao Tunnel.
Type
journal article