| 车辆动荷载作用下隔振沟响应增强区数值分析 |
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| 引用本文： | 邓亚虹,夏唐代,陈敬虞.车辆动荷载作用下隔振沟响应增强区数值分析[J].岩土工程学报,2006,28(12):2121-2127. |
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| 作者姓名： | 邓亚虹 夏唐代 陈敬虞 |
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| 作者单位： | 浙江大学岩土工程研究所；浙江大学岩土工程研究所 浙江杭州310027；浙江杭州310027； |
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| 摘 要： | 基于动力学基本方程,运用有限单元法(FEM)和NEWMARK隐式积分方法,对车辆荷载(FWD荷载)作用下明沟隔振结构附近振动响应增强区的分布范围特征及其增强效应进行了弹塑性数值分析。考虑到人工截断边界上波反射对计算结果的影响,分别用传递边界和半无限单元来处理侧面和底面边界。文中主要考虑了隔振沟位置、隔振沟深度和宽度三个主要影响因素,并在计算结果的基础上分析总结了他们对隔振沟响应增强区的影响规律。
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| 关 键 词： | 隔振沟 响应增强区 有限元法 传递边界 半无限单元 车辆荷载 FWD荷载 |
| 文章编号： | 1000-4548（2006）12-2121-07 |
| 收稿时间： | 2005-09-23 |
| 修稿时间： | 2005-09-23 |
Numerical analysis of response magnified area of vibration isolation trenches subjected to vehicle dynamic loads |
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| DENG Ya-hong,XIA Tang-dai,CHEN Jing-yu.Numerical analysis of response magnified area of vibration isolation trenches subjected to vehicle dynamic loads[J].Chinese Journal of Geotechnical Engineering,2006,28(12):2121-2127. |
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| Authors: | DENG Ya-hong XIA Tang-dai CHEN Jing-yu |
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| Affiliation: | Institute of Geotechnical Engineering Zhejiang University Hangzhou 310027 China |
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| Abstract: | According to the basic equation of dynamics, using FEM and NEWMARK implicit algorithm, an elastic-plastic numerical analysis was made to analyze the response magnified area of the vibration isolation construction of open trenches for the vibration induced by vehicle dynamic loads. In order to reduce the effect of wave reflecting on artificial boundaries, transmitting boundary and semi-infinite elements were respectively used to treat the lateral and underside boundaries. The position, depth and the width of open trenches were the three mainly considered factors. Finally, on the basis of the numerical calculation results, their effects laws were analyzed. |
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| Keywords: | vibration isolation trenche response magnified area FEM transmitting boundary semi-infinite element vehicle load FWD load |
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