| P波作用下深埋隧道动应力集中问题参数敏感性分析 |
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| 引用本文： | 王长柏,李海波,周青春,夏祥.P波作用下深埋隧道动应力集中问题参数敏感性分析[J].岩土力学,2011,32(3):775-780. |
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| 作者姓名： | 王长柏 李海波 周青春 夏祥 |
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| 作者单位： | 1. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉,430071;安徽理工大学上木建筑学院,安徽淮南,232001
2. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉,430071 |
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| 基金项目： | 国家自然科学基金资助项目，"十一五"科技支撑计划课题 |
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| 摘 要： | 采用波函数展开法,推导了无限介质中双层衬砌圆形洞室在P波作用下衍射问题的解析解,并结合南水北调西线1期工程3#引水隧道开展了动应力集中系数参数敏感性分析。计算结果表明,围岩和内层衬砌的弹性模量对结构的动应力集中系数影响较大,而围岩泊松比对计算结果的影响几乎可以忽略不计;围岩和衬砌之间的介质层在一定程度上具有减震作用,前提条件是其弹性模量低于围岩弹性模量的1/20,否则减震效果不明显。
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| 关 键 词： | 平面P波 衍射 深埋隧道 动应力集中 |
| 收稿时间： | 2010-04-28 |
Parameters sensitivity analysis of dynamic stress concentration for deep buried tunnel under incident plane waves |
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| WANG Chang-bo,LI Hai-bo,ZHOU Qing-chun,XIA Xiang.Parameters sensitivity analysis of dynamic stress concentration for deep buried tunnel under incident plane waves[J].Rock and Soil Mechanics,2011,32(3):775-780. |
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| Authors: | WANG Chang-bo LI Hai-bo ZHOU Qing-chun XIA Xiang |
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| Institution: | 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2.Department of Civil Engineering and Architecture,Anhui University of Science and Technology, Huainan, Anhui 232001, China |
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| Abstract: | Based on wave function expansion method,an analytical solution for dynamic stress concentration of circular tunnel with double-layer-liner in infinite media under incident plane P waves is deduced.According to the solution,parameters sensitivity analysis of dynamic stress concentration is carried out in combination with the tunnel #3of the first phase project along the Western Route Project of South-to-North Water Transfer Project.The calculation results show that the elasticity modulus of surrounding rock ... |
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| Keywords: | plane P waves diffraction deep buried tunnel dynamic stress concentration |
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