| 弹性层状土体中波阻板(WIB)减振效果的边界元传递矩阵法分析 |
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| 引用本文： | 徐满清,王向东,闵崇武.弹性层状土体中波阻板(WIB)减振效果的边界元传递矩阵法分析[J].南昌水专学报,2011(3). |
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| 作者姓名： | 徐满清 王向东 闵崇武 |
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| 作者单位： | 南昌工程学院土木与建筑工程学院;九江市水利规划设计院; |
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| 基金项目： | 国家自然科学基金资助项目(50578071); 江西省教育厅青年科学基金项目(GJJ09367); 南昌工程学院首批大学生科研训练计划项目 |
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| 摘 要： | 采用边界元传递矩阵法,研究了层状土体中埋置波阻板(WIB)对条形简谐荷载振动的减振效果.土体为层状弹性半无限空间,波阻板埋置在层状土体中,通过计算层状土体中不同观察点的插入耗损,分析波阻板的减振效果.数值结果表明:波阻板对低频有较好的减振效果,但当振动波长相对于波阻板的埋深、宽度较小时,对于某些频率的振动,较远处的观察点有频率放大现象.
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| 关 键 词： | 波阻板(WIB) 层状弹性土 边界元传递矩阵法 减振 |
Vibration reduction due to wave impedance block embedded in layered elastic soil with BEM transfer matrix method |
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| XU Manqing,WANG Xiangdong,MIN Chongwu.Vibration reduction due to wave impedance block embedded in layered elastic soil with BEM transfer matrix method[J].Journal of Nanchang College of Water Conservancy and Hydroelectric Power,2011(3). |
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| Authors: | XU Manqing WANG Xiangdong MIN Chongwu |
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| Affiliation: | XU Manqing1,WANG Xiangdong2,MIN Chongwu1(1.School of Civil and Architectural Engineering,Nanchang Institue of Technology,Nanchang 330099,China,2.Jiujiang Water Planning and Designing Institute,Jiujiang 332100,China) |
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| Abstract: | A numerical model which investigates the transmission of vibrations and its reduction in the far-field of the surface of the ground is presented.The vibration attenuation device is the wave impedance block(WIB).It is based on an integral equation and transfer matrix formulation of the problem which is solved by using a boundary element approach.The ground is modeled as an elastic layered half-space and the inclusion is under the load within the layered half-space.The performance of WIB in impeding wave tran... |
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| Keywords: | wave impedance block(WIB) layered elastic half-space BEM method vibration attenuation |
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