Numerical simulation of dynamic response of operating metro tunnel induced by ground explosion

查看全文 作　　者：Yubing [1]Yang;Xiongyao [1]Xie;Rulu [2]Wang

机构地区：[1]Key Laboratory of Geotechnical Engineering,Department of Geotechnical Engineering,Tongji University,Shanghai,200092,China;[2]Shanghai Metro Operation Co.,Ltd.,Shanghai,200003,China

出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》索引2010年第2卷第4期,共12页

基　　金：Supported by the National Natural Science Foundation of China (40874074, 50950110347);the National High Technology Research and Development Program (863 Program) of China (2006AA11ZAA8);Shanghai Science and Technology Development Funds (07ZR14117) 摘　　要：To evaluate the effects of possible ground explosion on a shallow-buried metro tunnel, this paper attempts to analyze the dynamic responses of the operating metro tunnel in soft soil, using a widely applied explicit dynamic nonlinear finite element software ANSYS/LS-DYNA. The blast induced wave propagation in the soil and the tunnel, and the von Mises effective stress and acceleration of the tunnel lining were presented, and the safety of the tunnel lining was evaluated based on the failure criterion. Besides, the parametric study of the soil was also carried out. The numerical results indicate that the upper part of the tunnel lining cross-section with directions ranging from 0° to 22.5° and horizontal distances 0 to 7 m away from the explosive center are the vulnerable areas, and the metro tunnel might be safe when tunnel depth is more than 7 m and TNT charge on the ground is no more than 500 kg, and the selection of soil parameters should be paid more attentions to conduct a more precise analysis. 关键词：ground surface explosion numerical simulation metro tunnel dynamic response

相关文献

参考文献（25）
引证文献（18）
耦合文献（650）

参考文献(25)

引证文献(18)

耦合文献(650)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Numerical simulation of dynamic response of operating metro tunnel induced by ground explosion

参考文献(25)

引证文献(18)

耦合文献(650)

用户提示