›› 2016, Vol. 37 ›› Issue (9): 2687-2695.doi: 10.16285/j.rsm.2016.09.034

• Numerical Analysis • Previous Articles     Next Articles

Scattering of SH-wave along lined tunnel in alluvial valley

ZHAO Rui-bin1, 2, LIU Meng3, LIU Zhong-xian1, 2, ZHANG Jian-xin1, 2   

  1. 1. School of Civil Engineering,Tianjin Chengjian University, Tianjin, 300381, China; 2. Key Laboratory of Soft Soil Engineering Character and Engineering Environment of Tianjin, Tianjin Chengjian University, Tianjin, 300384, China; 3. Hebei Capital Group, National Geological Center of Building Materials Industury, Baoding, Hebei 075051, China
  • Received:2014-09-22 Online:2016-09-12 Published:2018-06-09
  • Supported by:

    This work was supported by the Tianjin Research Program of Application Foundation and Advanced Technology, the National Natural Science Foundation of China (51278327) and the key Research Program of Application Foundation and Advanced Technology Tianjin (13JCZDJC35500).

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Abstract: Although lined tunnels usually pass through the alluvial valley; the study of their seismic responses is limited. The SH-plane wave scattering induced by an elastic-half-space lined tunnel in alluvial valley is studied with MATLAB program and the indirect-integral boundary element method. The influences of frequency, tunnel depth and incident angle are investigated on the surface displacement and the dynamic stress concentration factor of the internal and surface displacements of alluvial valley. The difference between tunnel and semi-space tunnel in alluvial valley is compared. The results show that the dynamic stress concentration of lined tunnel in alluvial soft clay is significant, and due to the high frequency incident waves, the effect of tunnel depth in alluvial area on the displacement distribution and lined stress spectrum as well as surface displacement is also significant.

Key words: elastic half-space, alluvial valley, lined tunnel, SH-plane wave, indirect-integral boundary equation method (IBIEM)

CLC Number: 

  • TU 452

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