东南大学学报（自然科学版）2013，Vol.43Issue(4)：863-867,5.DOI:10.3969/j.issn.1001-0505.2013.04.035
高架地铁列车环境振动传播规律的数值模拟
Numerical simulation of environmental vibration induced by viaduct rail transit
摘要
Abstract
To study the environment vibration and its effect on surrounding soil and structures around,a 31-degree freedom vibration model of metro vehicle and a three-dimensional finite element model of bridges-soil-building were proposed.First,the track irregularities were simulated by the trigonometric series method.A vertical vehicle-track coupling model was developed and the time-history loads of metro vehicle was obtained.Then,a three-dimensional finite element model of bridges-soil-building was set up and the time-history loads were utilized to analyze the effect of accelerate parameters on the key points in ground and buildings.The calculation results were analyzed by the spectral analysis method,and the power spectrum functions of the key points were obrained.The results of this study show that the environment vibration on the ground has significant directionality characteristic,and vertical vibration plays a dominant role.The horizontal vibration becomes a major concern in the high-rise building above 12-storey.The high frequency vibration component above 10 Hz attenuates faster than the component below 10 Hz.The vibration in the area 30 m away from the line is mainly of the low frequency.关键词
环境振动/轨道不平顺/动荷载/功率谱Key words
environmental vibration/rail irregularity/dynamic load/power spectrum分类
交通工程引用本文复制引用
张辰辰,钱振东,张晓春..高架地铁列车环境振动传播规律的数值模拟[J].东南大学学报（自然科学版）,2013,43(4):863-867,5.基金项目
"十一五"国家科技支撑计划资助项目(2009BAG15B03). （2009BAG15B03）
