Full scale experimental study on vibration scattering using open and in-filled (GeoFoam) wave barriers
Full scale experimental study on vibration scattering using open and in-filled (GeoFoam) wave barriers
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DOI：
10.1016/j.soildyn.2010.08.010
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发表时间：
2011-03-01
影响因子：
4
通讯作者：
El Naggar, M. Hesham
中科院分区：
文献类型：
--
作者：
Alzawi, Ashref;El Naggar, M. Hesham
机器基础引起的地面振动可能会对附近的建筑物造成从恼人到结构损坏的不利影响。这些振动大多以表面波(瑞利波)的形式传播。机器基础产生稳态振动，对于这种振动，波障可以是一种成功的技术，通过散射产生的稳态表面波来减小这些影响。通过现场足尺试验研究了土工泡沫材料对明渠和填沟的防护性能，并考察了振源的墙体几何形状和位置对隔震效果的影响。本研究还提出了一种创新的方法来建造土工泡沫海沟作为防波堤。对现场试验研究的结果进行了分析和解释，为设计中的实施提供了建议。实验结果表明，开口屏障和土工泡沫屏障均能有效地减小透射波。现场试验结果与用ABAQUS有限元程序建立的数值模型的结果进行了比较。(C)2010爱思唯尔有限公司。保留所有权利。
Ground vibrations induced by machine foundations can cause unfavourable effects on the nearby buildings ranging from annoyance to structural damage. Most of these vibrations propagate in the form of surface (Rayleigh) waves. Machine foundations produce a steady state vibration, for which, wave barriers can be a successful technique to minimize these effects by scattering the generated steady state surface waves. A full scale field experimental study has been conducted to investigate the protective performance of both open and in-filled trench with GeoFoam material as well as to examine the influences of wall geometry and location from the vibratory source on the isolation efficiency. An innovative approach to construct GeoFoam trench as a wave barrier is proposed in this study as well. The results of the field experimental investigations are analyzed and interpreted to provide recommendations for implementation in design. Experimental results show that both open and GeoFoam barriers can effectively reduce the transmitted waves. The field experimental results have been compared with those obtained from the developed numerical model using a finite element package, ABAQUS. (C) 2010 Elsevier Ltd. All rights reserved.