| Rayleigh波作用下地下结构的动力反应分析 |
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| 引用本文： | 刘晶波,李彬.Rayleigh波作用下地下结构的动力反应分析[J].工程力学,2006,23(10):132-135,131. |
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| 作者姓名： | 刘晶波 李彬 |
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| 作者单位： | 清华大学土木工程系,北京,100084 |
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| 基金项目： | 国家自然科学基金;国家重点基础研究发展计划(973计划);北京市自然科学基金 |
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| 摘 要： | 基于粘弹性人工边界提出了Rayleigh波的时域波动输入方法,在此基础上研究了Rayleigh波作用下地下隧道的动力反应特性,重点研究了埋深对结构动力反应的影响。结果表明提出的波动输入方法具有良好的模拟精度;Rayleigh波对浅埋地下结构的动力反应影响显著;存在临界埋深D0,当结构埋深D>D0时,随着埋深的增加,结构动力反应逐渐减小;当D
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| 关 键 词： | 地下结构 人工边界 波动输入 土-结构动力相互作用 时程分析 核试验 |
| 文章编号： | 1000-4750（2006）10-0132-04 |
| 收稿时间： | 2005-02-28 |
| 修稿时间： | 2005-02-282005-05-31 |
DYNAMIC RESPONSE ANALYSIS OF UNDERGROUND STRUCTURES DURING PROPAGATION OF RAYLEIGH WAVES |
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| LIU Jing-bo,LI Bin.DYNAMIC RESPONSE ANALYSIS OF UNDERGROUND STRUCTURES DURING PROPAGATION OF RAYLEIGH WAVES[J].Engineering Mechanics,2006,23(10):132-135,131. |
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| Authors: | LIU Jing-bo LI Bin |
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| Affiliation: | Department of Civil Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Rayleigh wave input method is proposed based on Viscous-Spring Boundaries. The dynamic response of a tunnel during propagation of Rayleigh wave is studied using the proposed method, and the influence of depth is investigated in detail. Numerical analysis results show good accuracy of the wave motion input method and large effect of Rayleigh wave on the dynamic response of shallow underground structures. If structural depth D is larger than a critical depth Do, the influence of Rayleigh wave on dynamic response will reduce with the increase in burial depth; otherwise the influence is governed by the property of Rayleigh wave. The influence of depth on underground structures in nuclear explosion tests is briefly introduced, the results of which show good agreement with the analyzed ones using the proposed method. |
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| Keywords: | underground structure artificial boundary wave motion input soil-structure dynamic interaction time history analysis nuclear test |
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