[1]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.[doi:10.3969/j.issn.1001-0505.2013.04.035]
　Zhang Chenchen,Qian Zhendong,Zhang Xiaochun.Numerical simulation of environmental vibration induced by viaduct rail transit[J].Journal of Southeast University (Natural Science Edition),2013,43(4):863-867.[doi:10.3969/j.issn.1001-0505.2013.04.035]
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高架地铁列车环境振动传播规律的数值模拟()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第4期
页码:
863-867
栏目:
交通运输工程
出版日期:
2013-07-20

文章信息/Info

Title:
Numerical simulation of environmental vibration induced by viaduct rail transit
作者:
张辰辰; 钱振东; 张晓春
东南大学智能交通运输系统研究中心, 南京 210096
Author(s):
Zhang Chenchen;  Qian Zhendong;  Zhang Xiaochun
Intelligent Transport System Research Center, Southeast University, Nanjing 210096, China
关键词:
环境振动;  轨道不平顺;  动荷载;  功率谱
Keywords:
environmental vibration;  rail irregularity;  dynamic load;  power spectrum
分类号:
U260.11
DOI:
10.3969/j.issn.1001-0505.2013.04.035
摘要:
为研究地铁诱发的环境振动在周围土体和邻近建筑物内的传播规律,建立了31自由度地铁车辆模型以及桥梁-土体-建筑三维有限元模型,并进行了数值研究.首先,通过三角级数法获得可靠的轨道不平顺谱,建立车辆-轨道动力学模型,得到车辆随机振动荷载时程谱;然后,将荷载时程谱加载到桥梁-土体-建筑三维有限元模型上,计算得到周围土体和临近建筑内关键点位的振动幅值,并对计算结果进行频谱分析,获得各点的振动功率谱函数.研究结果表明:地铁环境振动在地面上的传播存在明显的方向性,竖向振动占主导地位;高层建筑12层以上部分需重点考虑水平面上的振动;传播过程中10 Hz以上的高频振动衰减较快,距轨道中心30 m以外的环境振动以低频振动为主.
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 obtained. 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.

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备注/Memo

备注/Memo:
作者简介: 张辰辰(1985—),男,博士生;钱振东(联系人),女,博士,教授,博士生导师,qianzd@seu.edu.cn.
基金项目: “十一五”国家科技支撑计划资助项目(2009BAG15B03).
引文格式: 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. ［doi:10.3969/j.issn.1001-0505.2013.04.035］
更新日期/Last Update: 2013-07-20