Seismic response of tunnel under normal fault slips by shaking table test technique

被引:20
作者
Fan, Ling [1 ]
Chen, Jie-ling [1 ]
Peng, Shu-quan [1 ]
Qi, Bin-xi [1 ]
Zhou, Qi-wen [1 ]
Wang, Fan [1 ]
机构
[1] Cent South Univ, Sch Resource & Safety Engn, Changsha 410083, Peoples R China
基金
中国国家自然科学基金;
关键词
tunnel; normal fault; earthquake; fault slip; shaking table test; peak acceleration; MOUNTAIN TUNNELS; DAMAGE; DEFORMATION; EVOLUTION; BEHAVIOR;
D O I
10.1007/s11771-020-4368-0
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
Mountain tunnel crossing a normal fault in seismically active zone is easily affected by normal fault slip and earthquake. It is necessary to study tunnel dynamic response under action of normal fault slip and earthquake. In this paper, a three-dimensional normal fault sliding device was designed, and a shaking table test was carried out to study tunnel seismic performance under normal fault slip. The results show that peak acceleration of lining is dominated by an existence of fault and direction of seismic excitation, not normal fault slip. And the incremental strains of lining in critical zone with 1.7 times fault thickness and centered in faults induced by normal fault slip and seismic excitation are larger than ones only by seismic excitation. And the incremental strains in critical zone increase with the increase of normal fault slip magnitude ranging from 0 to 2 mm. And normal fault slip results in a significant reduction of overall tunnel stiffness subjected to an earthquake. These experimental results provide a scientific reference for prevention and control measurement of tunnel damage under earthquake and normal fault slip.
引用
收藏
页码:1306 / 1319
页数:14
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