Study on the anti-breaking design method of tunnel across active fault #br#
based on the energy balance method
Cui Guangyao1 Song Bohan1 Wang Mingnian2 Wang Daoyuan2 Wu Xiugang1
1. North China University of Technology, Beijing 100144, China;
2. Key Laboratory of Transportation Tunnel Engineering of the Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China
Abstract： The scientific design and reasonable fortification of the cross-active fault tunnel in the strong earthquake area was a difficult point. For this reason, based on the principle of energy conservation, the anti-breaking design method of the tunnel under faults was studied. Through the energy analysis of the tunnel failure process, the theoretical formula of the releasable strain energy of the tunnel structure was obtained. The anti-breaking design idea of the cross-active fault tunnel was proposed and the design method was established. The application was combined with numerical simulation and calculation. The minimum safety factor of the tunnel structure obtained by the design method was 18.5% larger than the norm value, which indicates that the established design method can be used for the anti-breaking design of the cross-active fault tunnel and was conservative. The research results can provided reference for the improvement of the anti-breaking performance of high-risk mountainous cross-active fault tunnels.
崔光耀 宋博涵 王明年 王道远 伍修刚. 基于能量守恒原理的跨活动断层隧道抗#br#
错断设计方法研究[J]. 土木工程学报, 2020, 53(S2): 309-314.
Cui Guangyao Song Bohan Wang Mingnian Wang Daoyuan Wu Xiugang. Study on the anti-breaking design method of tunnel across active fault #br#
based on the energy balance method. 土木工程学报, 2020, 53(S2): 309-314.
