Study of shaking table model test of fault strike on the seismic response of tunnels
LIU Li-biao1, WANG Yong-fu2, LIU Fang1, ZHOU Jie1
1. College of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China;
2. Department of Military and Civil Engineering, Logistical Engineering University, Chongqing 401311, China.
To reveal the response and damage mechanism of a tunnel through the different fault strike under earthquake, a shaking table model test and numerical analysis were introduced. The research focuses on the acceleration, the strain, earth pressure and fracture patterns of the tunnel. The test results show that the tunnel lining is subjected to large tension and compressive stress, most complex and wider cracks of the lining occurred concentrated on the spandrel, arch foot and invert arch when the tunnel cross the fault zone. The change law of acceleration and dynamic strain along the tunnel are similar in every point, show that the tunnel is a unity, but the seismic dynamic response has significant amplification effect when the tunnel cross the fault zone, and the more obvious with the angle decrease of the fault strike and tunnel. The dynamic earth pressure curves show the value and direction changed with the seismic loads, the amplitude of the dynamic earth pressure is the rules of the big on the both sides and the small on the top floor. This paper can provide references on the earthquake resistant design and construction of practical projects, which has an important practical engineering significance.
刘礼标1,王永甫2,刘方1,周杰1. 断层走向对隧道地震响应影响的振动台试验研究[J]. 振动与冲击, 2017, 36(21): 196-202.
LIU Li-biao1, WANG Yong-fu2, LIU Fang1, ZHOU Jie1. Study of shaking table model test of fault strike on the seismic response of tunnels. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(21): 196-202.
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