高架轨道系统诱发环境振动的实测与数值分析

刘庆杰; 雷晓燕; 许士强; 吕绍棣

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铁道工程学报 ›› 2008, Vol. 25 ›› Issue (5) : 23-29.

路网研究

高架轨道系统诱发环境振动的实测与数值分析

刘庆杰,雷晓燕,许士强,吕绍棣

作者信息 +

Field Test and Numerical Analysis of Environment Vibration Induced by Viaduct Track System

LIU Qing-jie, LEI Xiao-yon, XU Shi-qiang, Lv Shao-di

Author information +

文章历史 +

摘要

研究目的:研究高架轨道系统诱发的地面振动特性。

研究结论:(1)点荷载作用下，大地的响应与表面波的频散特性有关，低频振动衰减速度较慢，高频振动衰减速度较快，当激振频率接近大地主频时，大地振动有放大现象。(2)在数值计算当中，Rayleigh阻尼能较好的模拟大地的阻尼特性，其参数选取可采用试算的方法确定。

Abstract

Research purposes :The research is done on the characteristics of ground vibration induced by viaduct track system.

Research conclusions: (1)The results show the group response relates to the characteristics of frequency dispersion under the effects of point load, that is the low frequency vibration wave is attenuated mare slowly than high frequency vibration wave and when the vibration frequency is close to the main ground frequency, the ground vibration becomes large. (2)In numerical calculation, Rayleigh damping can simulate the ground damping characteristics well and its parameters can be decided with calculation.

导出引用

刘庆杰, 雷晓燕, 许士强, 等. 高架轨道系统诱发环境振动的实测与数值分析[J]. 铁道工程学报, 2008, 25(5): 23-29

LIU Qing-jie, LEI Xiao-yon, XU Shi-qiang, et al. Field Test and Numerical Analysis of Environment Vibration Induced by Viaduct Track System[J]. Journal of Railway Engineering Society, 2008, 25(5): 23-29

中图分类号： U233

参考文献

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