| 弹性半空间中衬砌隧道对瑞利波的散射 |
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| 引用本文： | 刘中宪,梁建文,张贺.弹性半空间中衬砌隧道对瑞利波的散射[J].岩石力学与工程学报,2011,30(8):1627-1637. |
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| 作者姓名： | 刘中宪 梁建文 张贺 |
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| 作者单位： | (1. 天津城市建设学院 天津市软土特性与工程环境重点实验室，天津 300384；2. 天津大学 土木工程系，天津 300072) |
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| 基金项目： | 国家自然科学基金资助项目(50978183,51008210) |
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| 摘 要： | 采用一种高精度的间接边界积分方程法，对弹性半空间中衬砌隧道对入射瑞利的二维散射问题进行求解分析。结果表明：衬砌隧道和非衬砌隧道对瑞利波的散射具有显著的差别，衬砌刚度对波的散射规律具有重要影响。隧道附近地表动力响应和隧道衬砌动应力集中主要取决于衬砌和围岩的刚度比、隧道的埋深和直径、入射波频率等因素。对于柔性衬砌，浅埋隧道对低频瑞利波会产生显著的位移放大效应；对于刚性衬砌，衬砌内壁的动应力集中效应十分明显。整体上看，随着埋深的增大，隧道周围波的散射逐渐减弱。
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| 关 键 词： | 隧道工程弹性半空间衬砌隧道间接边界积分方程法瑞利波散射 |
| 收稿时间： | 2011-03-25; |
SCATTERING OF RAYLEIGH WAVE BY A LINED TUNNEL IN ELASTIC HALF-SPACE |
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| LIU Zhongxian,LIANG Jianwen,ZHANG He.SCATTERING OF RAYLEIGH WAVE BY A LINED TUNNEL IN ELASTIC HALF-SPACE[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(8):1627-1637. |
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| Authors: | LIU Zhongxian LIANG Jianwen ZHANG He |
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| Affiliation: | (1. Key Laboratory of Soft Soils and Engineering Environment of Tianjin，Tianjin Institute of Urban Construction，Tianjin ;
300384，China；2. Department of Civil Engineering，Tianjin University，Tianjin 300072，China) |
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| Abstract: | Two-dimensional scattering of incident Rayleigh waves by a lined tunnel in elastic half-space is solved and analyzed by the high-precision indirect boundary integral equation method(IBIEM).It is found that the scattering around the lined tunnel may be significantly different from that around the unlined tunnel;and the lining stiffness has a great effect on the wave scattering.The dynamic response and dynamic stress concentration depend considerably on the stiffness ratio of the lining to the surrounding soi... |
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| Keywords: | tunnelling engineering elastic half-space lined tunnel indirect boundary integral equation method(IBIEM) Rayleigh wave scattering |
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