RESEARCH ARTICLE


Shaking Table Model Test and Numerical Modeling for Tunnels Traversing Faultage



Yang Bo*, 1, Zheng Yingren1, 2, Lai Jie1, 4, Liu yun3, Li Xiudi1
1 Department of Civil Engineering, Logistical Engineering University, Chongqing 401311, China
2 Chongqing Key La-boratory of Geomechanics & Geoenvironment Protection, Chongqing 401311, China
3 Chongqing Jiaotong University, Chongqing 400074, China
4 Chongqing Engineering and Technology Research Center of Geological Hazard Prevention and Treatment, Chongqing 400041, China


Article Metrics

CrossRef Citations:
1
Total Statistics:

Full-Text HTML Views: 559
Abstract HTML Views: 904
PDF Downloads: 481
Total Views/Downloads: 1944
Unique Statistics:

Full-Text HTML Views: 322
Abstract HTML Views: 556
PDF Downloads: 343
Total Views/Downloads: 1221



Creative Commons License
© 2015 Bo et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



Abstract

To reveal the response and damage mechanism of a tunnel across through the fracture zone under earthquake, a shaking table model test and numerical analysis were introduced, where the scale of the numerical simulation and the model test was 1:1. The tunnel acceleration response and the crack, development process, strain response characteristics and dynamic stress distribution of lining were investigated. The results show that the tunnel lining will be subjected to large tension and compressive stress, when its tensile strength is insufficient, tension fracture would generate in the bottom of the arch or near both sides of the arch foot , so reinforced concrete lining should be adopted in order to improve its ability to bear the tensile failure; the acceleration response of lining increases with the increase of input seismic acceleration; dynamic earth pressure response is more intense on both sides of the surrounding rock. This research can serve as a reference for the seismic design of the tunnel.

Keywords: Acceleration response, dynamic earth pressure, fracture, fracture zone, shaking table model test.