期刊 车辆荷载作用下隔震沟隔震效率影响因素分析  被引量:20

Analysis of efficiency of vibration isolating groove subjected to vehicle load

作  者:邓亚虹[1] 夏唐代[1] 陈敬虞[1] 

机构地区:[1]浙江大学岩土工程研究所

出  处:《岩土力学》2007年第5期883-887,894,共6页Rock and Soil Mechanics

Analysis of efficiency of vibration isolating groove subjected to vehicle load

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,对隔震沟对车辆荷载(FWD荷载)引起的地基振动的隔震效率的影响因素进行了弹塑性数值分析。考虑到人工边界上波反射对计算结果的影响,分别用有限单元和半无限单元离散计算区域内部和边界,分析中主要考虑了隔震沟的位置、深度、宽度三个主要影响因素,基于计算结果总结出其影响规律。

According to the basic equation of dynamics, using FEM and NEWMARK implicit integration algorithm, an elastoplasuc numerical analysis is made to analyze the efficiency of vibration isolating groove to the vibration caused by vehicle load. In order to reduce the effect of wave reflecting on border, finite element and semi-infinite element are respectively used to discrete the internal and border parts. The position of the vibration isolating groove and its depth and width are the three mainly considered factors. Finally, on the basis of the numerical calculation results, their effect laws are analyzed.

关 键 词:隔震沟 隔震效率 有限元法 车辆荷载 FWD荷载 

vibration isolating groove  vibration isolating efficiency  FEM  vehicle load  FWD load 

分 类 号:TU352.12[建筑科学—结构工程]

 

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