摘要
研究目的:以某大型地下轨道交通枢纽车站为研究对象,采用传递函数法对高铁及地铁列车运行引起的地下轨道交通枢纽车站结构的振动响应进行预测,并与传统的有限元模型计算结果进行对比分析,以研究传递函数法在大型复杂建筑结构振动预测中的适用性。研究结论:(1)传递函数法可以用于列车运行引起的大型复杂建筑结构的振动预测,且具有良好的准确性;(2)相比于传统的有限元法,传递函数法计算效率高,尤其适用于多种车轨工况下大型复杂建筑结构振动响应的计算;(3)对于地下列车振源,地下结构振动响应在轨道的侧面会出现振动放大区,这一现象源于隧道-土体-地下结构系统的振动传递特性;对于高铁和地铁列车而言,其引起的地下结构振动分别在40~60 Hz和50~80 Hz具有较大的量级,这一现象源自高铁和地铁列车-轨道动力相互作用系统的特性;(4)本研究成果可应用于大型地下交通枢纽的振动预测与减振设计,为高铁与地铁沿线建筑结构的振动舒适性评估及低频噪声控制提供一种新的思路。
Research purposes:Taking a large-scale underground rail transit hub station as the research object,the vibration response in the underground rail transit hub station caused by the operation of high-speed railways and metro trains was predicted by using the transfer function formulation,and a comparative analysis was conducted with the calculation results of the traditional finite element model to study the applicability of the transfer function formulation for the vibration prediction in large and complex structures.Research conclusions:(1)The transfer function formulation can be used for vibration prediction of large and complex structures caused by running trains,and it has good accuracy.(2)Compared with the traditional finite element method,the transfer function formulation has high calculation efficiency and is especially suitable for the calculation of vibration responses for large and complex structures under various train-track cases.(3)For the underground train vibrations,the vibration response of underground structure presents a vibration amplification zone along the sides of the track,which is caused by the vibration transmission characteristics of tunnel-soil-underground structure system.For high speed railways and subway trains,the underground structure vibrations they generate exhibit significant amplitudes in the 40~60 Hz and 50~80 Hz ranges,respectively,which results from the characteristics of train-track dynamic interaction system.(4)These results can be applied to the vibration prediction and vibration-damping design of large scale underground transport hubs.It lays a foundation for the vibration comfort assessment of building structures and the control of low-frequency noise along high-speed railway and subway lines.
作者
赵斗
叶少敏
刘鹏
姜博龙
芦峙廷
刘卫丰
ZHAO Dou;YE Shaomin;LIU Peng;JIANG Bolong;LU Zhiting;LIU Weifeng(China Railway Design Corporation,Tianjin 300308,China;National Engineering Research Center for Digital Construction and Evaluation Technology of Urban Rail Transit,Tianjin 300308,China;Beijing Jiaotong University,Beijing 100044,China)
出处
《铁道工程学报》
北大核心
2025年第12期95-100,共6页
Journal of Railway Engineering Society
基金
国家自然科学基金项目(52178404)
北京市自然科学基金-丰台轨道交通前沿研究联合基金项目(L221021,L231022)
中国铁路设计集团有限公司科技开发计划重点项目(2024A0253808)。
关键词
大型地下轨道交通枢纽
振动预测
传递函数法
高铁
地铁
large-scale underground rail transit hub
vibration prediction
transfer function formulation
high-speed railway
metro
