Dynamic Response of Shallow-Buried Small Spacing Tunnel with Asymmetrical Pressure: Shaking Table Testing and Numerical Simulation

被引：29
作者：
Jiang X. [1 ,2 ]
Wang F. [1 ,2 ]
Yang H. [1 ,2 ]
Sun G. [1 ,2 ]
Niu J. [1 ,2 ]
机构：
[1] College of Civil Engineering, Central South University of Forestry and Technology, Changsha
[2] Rock and Soil Engineering Research Institute, Central South University of Forestry and Technology, Changsha
来源：
Geotechnical and Geological Engineering | 2018年 / 36卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Dynamic response; Numerical simulation; Shaking table testing; Shallow-buried small spacing tunnel; Shock absorption measure;
D O I：
10.1007/s10706-017-0444-0
中图分类号：
学科分类号：
摘要：
A series of shaking table tests were designed and carried out to study the seismic behaviors of a shallow-buried small spacing tunnel with asymmetrical pressure. The key details to shaking table model test, including test equipment, model similarity relation, similarity constant, model box, physical model, layout of transducers, seismic waves, and loading system were presented. The numerical simulation of the shaking table test was also carried out by using a finite element simulation software. The results show that: (1) the Fourier spectrums in the vertical direction and horizontal direction are different at the same measuring point. The structure of tunnel transforms the Fourier spectrum of horizontal direction. (2) The stability of middle rock pillar is poor under seismic wave action. The anchor plays an important role in strengthening the stability of middle rock pillar. The dynamic strain of anchor has accumulative effect. (3) The numerical simulation results are in significant agreement with the shaking table test results. (4) Compared with type of seismic wave, peak seismic wave has a significant effect on acceleration response of tunnel. The peak acceleration response of the tunnel is linear with the peak seismic wave, in the horizontal direction. The peak acceleration response is nonlinear in the vertical direction. (5) The axial force of cross section at arch foot is larger than other position. The shock absorption effect of 10 cm seismic isolation layer is better than 5 and 20 cm. © 2018, Springer International Publishing AG, part of Springer Nature.
引用
收藏
页码：2037 / 2055
页数：18
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