摘要
针对TOD发展模式带来的车致振动-噪声日益突出的问题,提出一种轨道交通沿线建筑车致振动及二次结构噪声正向设计方法,按照“方案设计-声振计算-结果评估-方案优化”的设计思路,在项目设计阶段针对轨道沿线建筑进行振动噪声控制。提出车致振动及二次结构噪声快速计算方法,并通过振动试验及已发表文献中数据验证了其准确性。并通过某“高架式车站-商业”共建体的设计过程阐述此振动噪声正向设计方法的工程应用。研究结果表明:根据该正向设计方法可在短时间内设计多种振动噪声控制方案并准确计算其减振降噪效果,具有较高的工程应用价值。案例中最终输出的优选方案使站房振动值降低至79.6 dB,站厅及商业区域内结构噪声值分别降低至36.3 dB(A)和42.3 dB(A)。在项目设计阶段使车致振动及噪声达到标准限值要求,可避免线路建成之后振动噪声超标所带来的负面影响。
In view of the increasingly prominent problem of vehicle-induced vibration and noise caused by TOD development mode,a forward design method for vehicle-induced vibration and re-radiation noise of buildings along rail transit was proposed.According to the design idea of“scheme design-acoustic and vibration calculation-results evaluation-scheme optimization”,the vibration and noise control of buildings along the track was carried out in the project design stage.A fast calculation method for vehicle induced vibration and re-radiation noise was developed,and its accuracy was verified by the vibration test results and the data in the published literature.The engineering application of this forward design method was demonstrated by the design process of an “elevated railway station-commercial” co-construction structure.The results show that the forward design method can design a variety of vibration and noise control schemes in a short time and accurately calculate the vibration and noise reduction effect,which has high engineering application value.The optimal output scheme in this case reduces the vibration of the station to 79.6 dB,and reduces the structural noise of the station hall and the commercial area to 36.3 d B(A) and 42.3 dB(A),respectively.In the design stage of the project,this scheme makes the vehicle-induced vibration and noise meet the standard limit requirements so as to avoid the negative impact of excessive vibration and noise after the completion of the line.
作者
刘舫泊
陈以庭
冯读贝
杨吉忠
LIU Fangbo;CHEN Yiting;FENG Dubei;YANG Jizhong(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)
出处
《噪声与振动控制》
CSCD
北大核心
2022年第6期233-239,共7页
Noise and Vibration Control
关键词
振动与波
TOD
车致振动
二次结构噪声
正向设计
vibration and wave
TOD
vehicle-induced vibration
re-radiation noise
forward design
