摘要
为评估某火车站高架候车厅结构车致振动特性及振动对于舒适度的影响,采用振动测试的方法对列车经过时该候车厅不同部位的振动进行现场实测。基于实测数据及数值模拟分析对比,得到该火车站结构不同部位对车致振动的响应特征,在此基础上结合国家标准进行舒适度评估;通过1/3倍频程谱分析,研究结构不同部位各频带范围的加速度振动级。对于加速度振动级超出标准限值的工况,采用数值模拟的方法进行多重调谐质量阻尼器减振系统的设计。结果表明:重载货运列车过站时,火车站高架候车厅的车致振动最大加速度振动极易超过75 dB的标准限值从而对舒适度产生影响;在对该车站的研究中,通过对减振系统的优化设计,阐明明合理设计的多重调谐质量阻尼器系统可以有效降低候车厅的振动响应,其振动加速度最大降幅达到73.9%,振动加速度级最大减值为19.9 dB。
In order to evaluate the train-induced vibration characteristics of the structure of the elevated waiting hall and its influence on the comfort,the vibrations of different parts of the waiting hall,when the train is passing through,are measured.The measurement data and numerical simulation data are analyzed and compared mutually.The train-induced vibration response characteristics of different parts of the railway station are obtained.On this basis,the comfort of the railway station is evaluated according to the domestic standards.The vibration acceleration levels of frequency bands in different parts of the structure of the railway station are studied by 1/3 octave spectrum analysis.For the operation condition that the vibration acceleration level exceeds the standard limit,the design of the multi-tuned mass damper system is carried out by numerical simulation.The results show that when the heavy-duty freight train passes the station,the maximum vibration acceleration level of the train-induced vibration of the elevated train waiting hall can easily exceed the standard limit of 75 dB,which greatly reduces the passenger comfort.In the research of the station,through the optimization design of the damping system,it is shown that the multi-tuned mass damper system designed reasonably can effectively reduce the vibration response of the waiting hall.The maximum reduction of the vibration acceleration reaches 73.9%,and the maximum reduction of the vibration acceleration level is 19.9 dB.
作者
孟庆成
何翰林
张梦宇
马袁俊
齐欣
MENG Qingcheng;HE Hanlin;ZHANG Mengyu;MA Yuanjun;QI Xin(School of Civil Engineering and Geomatics,Southwest Petroleum University,Chengdu 610500,China;School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China)
出处
《噪声与振动控制》
CSCD
北大核心
2021年第1期177-183,共7页
Noise and Vibration Control
基金
四川省教育厅自然科学重点资助项目(16ZA0058)
住房与城乡建设部科研开发资助项目(2016-K4-060)
国家安监总局重大事故防治关键技术科技资助项目(sichuan-0012-2016AQ)
西南石油大学青年教师“过学术关”资助项目(201599010026)
西南石油大学科研启航计划资助项目(2015QHZ023)
国家自然科学基金资助项目(51408498)。
