| 饱和地基中二维填充沟远场被动隔振研究 |
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| 引用本文： | 时刚,郭院成,高广运.饱和地基中二维填充沟远场被动隔振研究[J].岩土工程学报,2011(1). |
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| 作者姓名： | 时刚 郭院成 高广运 |
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| 作者单位： | 郑州大学土木工程学院;同济大学岩土及地下工程教育部重点实验室; |
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| 基金项目： | 国家自然科学基金项目(50878155,50678128) |
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| 摘 要： | 针对饱和均质地基中二维填充沟远场被动隔振问题,首先,基于饱和多孔介质频域边界元法,建立了以薄层法(TLM)基本解作为动力Green函数的饱和土半解析边界元法,该方法可有效的分析饱和半空间的动力问题,是解决土–结构动力相互作用问题的一种有效工具。在此基础上,根据填充沟与周围土体的邻接条件,推导得到了填充沟对Rayleigh波散射的二维边界元方程;运用上述边界元方程,对刚性填充沟的远场隔振问题进行了详细的参数分析。结果表明:在饱和地基中设置填充沟能够对地面振动起到有效的隔振作用;增加填充沟的深度和剪切模量均能有效地提高其隔振效果;填充沟宽度对隔振效果影响较为复杂,而填充材料的泊松比对隔振效果则基本没有影响。
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| 关 键 词： | 薄层法 边界元 填充沟 饱和地基 隔振效果 |
Two-dimensional analysis of in-filled trenches as passive barriers in saturated soil |
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| SHI Gang,GUO Yuan-cheng,GAO Guang-yun.Two-dimensional analysis of in-filled trenches as passive barriers in saturated soil[J].Chinese Journal of Geotechnical Engineering,2011(1). |
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| Authors: | SHI Gang GUO Yuan-cheng GAO Guang-yun |
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| Affiliation: | SHI Gang1,2,GUO Yuan-cheng1,GAO Guang-yun2(1.School of Civil Engineering,Zhengzhou University,Zhengzhou 450001,China,2.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University,Shanghai 200092,China) |
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| Abstract: | A study on the problem of vibration isolation efficiency by in-filled trenches as passive barriers in homogeneous saturated ground is presented.The investigation is accomplished by use of the semi-analytical boundary element method(BEM) in cooperation with the basic solution of the thin layered method(TLM).Consequently,a two-dimensional semi-analytical BEM model is put forward,where the TLM basic solution is employed,to use in-filled trenches as passive barriers taking into account the dynamical interaction... |
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| Keywords: | thin layered method boundary element method in-filled trench saturated soil isolation efficiency |
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