Shaking table tests on performances of anti-seismic and damping measures for fault-crossing tunnel structures

被引:0
作者
Xin, Chun-Lei [1 ]
Gao, Bo [1 ]
Zhou, Jia-Mei [1 ]
Shen, Yu-Sheng [1 ]
Quan, Xiao-Juan [1 ]
机构
[1] Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu
来源
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2014年 / 36卷 / 08期
关键词
Anti-seismic and damping measure; Destructive pattern; Horizontal seismic excitation; Shaking table test; Tunnel engineering;
D O I
10.11779/CJGE201408006
中图分类号
学科分类号
摘要
Fault-crossing tunnel structures are more and more universal in high intensity seismic regions of western China. The current code for aseismic design of civil engineering cannot be used for them. To deal with this problem, the seismic response characteristics and failure mechanism of routine and new anti-seismic and damping measures for tunnel structures are investigated based on shaking table tests. The results show that the self-developed sliding device can simulate fault movement successfully in a single model box. The casing-shape damping measure can provide the most effective protection, and it is the best-performing aseismic and damping measure for fault-crossing tunnels. The damping layer can enhance the general vibration strength of tunnel structures. The absorbing joint can reduce the post-seismic destruction by increasing longitudinal freedom degrees of tunnel structures. The initial destructive position and the whole destructive process of tunnels during the earthquake are analyzed. The action mechanism of various anti-seismic and damping measures are released. Finally, by analyzing the relationship between seismic intensity and destructive process of tunnel structures, the service conditions of various anti-seismic and damping measures are put forward. The above results certainly contribute to studying and developing new types of anti-seismic and damping measures for tunnels and provide references for seismic fortification of tunnels as well.
引用
收藏
页码:1414 / 1422
页数:8
相关论文
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