会议专题

Full 3D Numerical Analysis of A Mountain Tunnel Under Seismic Loadings

  As the most significant part of traffic system, tunnel was widely supposed to have higher seismic stability.However, according to the post-disaster investigations in the 2008 Wenchuan earthquake, there are more than ten mountain tunnels in service near the epicenter suffered from small to heavy damages.The Longxi tunnel was the most typical one.Different kinds of damage from concrete lining crack to integral collapse were observed in this tunnel.Therefore, this paper aims at clarifying the seismic response of mountain tunnel under different input scenarios.In this study, the three-dimensional numerical model is adopted to conduct analysis on seismic response of tunnel structures and three input scenarios are considered.The results indicates that horizontal motions are the main reason to the tunnel damages and the horizontal motion along tunnel axis has large effect on tunnel stress and the plastic zone of the surrounding rock, while the vertical motion has less effect on the seismic response of tunnel.

Wenchuan earthquake mountain tunnel input scenarios numerical simulation

Juntao Chen Haitao Yu

Department of Geotechnical Engineering, Tongji University, Shanghai, 200092, China Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji Universit

国际会议

The 3rd International Conference on Service Life Design for Infrastructure(2014第三届基础设施服役寿命设计国际会议)

珠海

英文

69-75

2014-10-15(万方平台首次上网日期,不代表论文的发表时间)