不同轨道支承下地铁引起的地面振动分析  

The Analysis on Ground-borne Vibration in Buildings Caused by Metro Train Operation with Different Rail Bearing Systems

作　　者：赵伟屹[1] 申道明[1] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092

出　　处：《佳木斯大学学报（自然科学版）》2012年第3期360-363,367,共5页Journal of Jiamusi University：Natural Science Edition

摘　　要：为了研究不同轨道支承在地铁减振中的作用,测试了三种轨道支承下地铁引起的地面竖向振动加速度.对其进行时程与三分之一倍频程分析,总结地面振动与轨道支承方式以及列车速度间的变化规律.研究表明,不同轨道支承的减振效果与其自身竖向刚度有关;不同车速对地面振动的VL zmax影响很小.本研究对于轨道支承在地铁减振中的使用具有理论指导意义.On the purpose of researching the application of different rail bearing systems in the ground vibration mitigation, the vertical vibration in buildings was tested with three kinds of bearing systems. Besides, the trend of the ground - borne vibration in buildings was analyzed by calculating the history and 1/3 octave of in - situ measurement results. It indicated that the vibration mitigation performance of rail bearing systems is related on the vertical stiffness of themselves, and that VLzmsx changes little at different train speeds. The calculation and analysis above may be helpful for the usage of rail bearing systems in vibration mitigation.

关 键 词：地铁 测试 减振扣件 室内振动 时程分析 频谱分析 

分 类 号：TU311[建筑科学—结构工程]