Comparative Analysis on Dynamic Responses of Deep-Seated Highway Tunnel under Bidirectional Seismic Actions
详细信息
- 责任者：Sun Wen (Key Laboratory of Road and Bridge and Underground Engineering of Gansu Province ; Lanzhou 730070 ; China) ; Liang Qingguo
- 刊名：Northwestern Seismological Journal
- 出版年：2012
- 卷期：34(4)
- 关键词：隧道 ; tunnels ; 应变分析 ; strain analysis ; 地震动 ; ground motion
- 页码：p.369-374, 382
- 图表：2 illus., 3 tables, 15 refs.
- 分类号：1702
- issnNo：ISSN1000-0844
- isbnNo：CN62-1048/P
摘要
The effect of earthquake actions on deep highway tunnel lining is investigated by numerical simulation using the finite element method (FEM) code MIDAS/GTS with the emphasis on the ground motions in unidirection,bidirections and on the gravity load.The acceleration time history obtained from the tunnel site with exceedance probability of 10% in 50 years is corrected with baseline before as input into simulation.The simulated results indicate that the response of tunnel lining under bidirectional seismic actions is bigger than those under unidirectional seismic action,where the arch springing and crown are the most dangerous positions under seismic forces.The combined actions of longitudinal and vertical directions will produce the biggest responses in tunnel lining.
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