交通运输研究2023，Vol.9Issue(5)：97-104,8.DOI:10.16503/j.cnki.2095-9931.2023.05.009
浮置板轨道沿线砖混建筑物振动响应及楼内振动传播规律
Vibration Response and Internal Vibration Propagation Law of Brick-Concrete Buildings Along Floating Plate Track Line
摘要
Abstract
In order to explore the vibration level and vibration propagation attenuation law of brick-concrete buildings along the floating slab track,and to make up for the shortcomings in the design and selection of existing vibration reduction and isolation measures,this article established a simulation and prediction model for building vibration along the metro line considering floating slab track,and calculated the vibration response inside the buildings along the line.Taking an operational floating slab track as the background,a train-floating slab track coupled analytical model in the frequency do-main and a finite element simulation model of tunnel-soil-building were established.The models were verified with in-site measured data,and the frequency division vibration characteristics of each floor of a building were analyzed.The results show that:the vibration response inside the buildings along the floating slab track line is simultaneously affected by the natural frequency of the floating slab track,the inherent modal frequency of the building,and the wheel-rail resonance frequency;the vibra-tion response of different floors and rooms on the same floor in the building varies greatly,with the maximum difference in frequency division vibration levels reaching over 15 dB.Therefore,targeted design of vibration reduction and isolation measures should be carried out based on the specific floor and position of the building where the protected object is located when the vibration reduction and iso-lation design is needed,and the frequency matching awareness of vibration reduction track design should be improved to avoid the extensive use of vibration reduction tracks.关键词
地铁/钢弹簧浮置板轨道/振动预测/室内振动/减振效果Key words
metro/floating slab track/vibration prediction/indoor vibration/vibration control effect分类
通用工业技术引用本文复制引用
刘悦,谭新宇,姜博龙,刘冀钊,陈江雪..浮置板轨道沿线砖混建筑物振动响应及楼内振动传播规律[J].交通运输研究,2023,9(5):97-104,8.基金项目
中央级公益性科研院所基本科研业务费项目(20224805) （20224805）
天津市科技计划项目(22JCQNJC01710) （22JCQNJC01710）
中国铁路设计集团有限公司科技开发课题(2021A241005) （2021A241005）
