沉积谷中衬砌隧道对SH波的散射

doi:10.16285/j.rsm.2016.09.034

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

沉积谷中衬砌隧道对SH波的散射

赵瑞斌^{1, 2}，刘萌³，刘中宪^{1, 2}，张建新^{1, 2}

1. 天津城建大学土木工程学院，天津 300384；2. 天津城建大学天津市软土特性与工程环境重点实验室，天津 300384； 3. 中国建筑材料工业地质勘查中心河北总队，河北保定 071051

收稿日期:2014-09-22 出版日期:2016-09-12 发布日期:2018-06-09
通讯作者: 刘中宪，男，1982年生，副教授，博士，主要从事地震工程、工程波动领域的研究工作。E-mail: zhongxian1212@163.net E-mail: zhao.rb@263.net
作者简介:赵瑞斌，男，1964年生，教授，博士，主要从事地震工程、岩土工程领域的研究工作。
基金资助:
天津市应用基础与前沿技术研究计划项目（No.14JCYBJC21900）；国家自然科学基金项目（No.51278327）；天津市应用基础与前沿技术研究计划重点项目（No.13JCZDJC35500）。

Scattering of SH-wave along lined tunnel in alluvial valley

ZHAO Rui-bin^{1, 2}, LIU Meng³, LIU Zhong-xian^{1, 2}, ZHANG Jian-xin^{1, 2}

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).

摘要/Abstract

摘要： 现实中衬砌隧道穿越沉积谷地十分常见，而国内外对其地震响应规律研究较少。基于MATLAB编程平台，采用间接边界积分方程法，就沉积谷地衬砌隧道对平面SH波的散射问题进行了初步探讨。研究了不同频率、隧道埋深与入射角度对地表位移和衬砌内外壁动应力集中因子的影响，并比较了沉积谷地中隧道与半空间隧道两种情况下的差别。结果表明：软土沉积中隧道衬砌动应力集中更为显著；高频波入射下，隧道埋深对沉积区域内位移分布、衬砌应力频谱特性和地表位移频谱特性均有较大影响。研究结论可为沉积谷地中衬砌隧道抗震设计与安全性评估提供定量依据。

关键词: 弹性半空间, 沉积谷, 衬砌隧道, 平面SH波, 间接边界积分方程法

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)

中图分类号:

TU 452

赵瑞斌，刘萌，刘中宪，张建新, . 沉积谷中衬砌隧道对SH波的散射[J]. , 2016, 37(9): 2687-2695.

ZHAO Rui-bin, LIU Meng, LIU Zhong-xian, ZHANG Jian-xin, . Scattering of SH-wave along lined tunnel in alluvial valley[J]. , 2016, 37(9): 2687-2695.

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沉积谷中衬砌隧道对SH波的散射

Scattering of SH-wave along lined tunnel in alluvial valley

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