地铁运行振动对周边建筑影响监测及分析  

Analysis and monitoring of subway-induced vibration on a surrounding building

作　　者：俞翔 张启迪 柏文[2,3] 邵志鹏 戴君武 俞涵[4] 周以勒 YU Xiang;ZHANG Qidi;BAI Wen;SHAO Zhipeng;DAI Junwu;YU Han;ZHOU Yile(Ningbo Rail Transit Property Company Limited,Ningbo 315000,China;Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China;Key Laboratory of Earthquake Disaster Mitigation,Ministry of Emergency Management,Harbin 150080,China;Architectural Design&Research Institute of Ningbo Housing Co.,Ltd.,Ningbo 315012,China)

机构地区：[1]宁波市轨道交通物产置业有限公司,浙江宁波315000 [2]中国地震局工程力学研究所地震工程与工程振动重点实验室,黑龙江哈尔滨150080 [3]地震灾害防治应急管理部重点实验室,黑龙江哈尔滨150080 [4]宁波市房屋建筑设计院有限公司,浙江宁波315012

出　　处：《地震工程与工程振动》2024年第6期161-172,共12页Earthquake Engineering and Engineering Dynamics

基　　金：中国地震局工程力学研究所基本科研业务费专项资助项目(2024C03);国家自然科学基金项目(52378542);云南省市一体化项目(202202AH210004)。

摘　　要：为研究城市轨道交通振动对沿线建筑的振动影响,选取某临近地铁线的在建框架剪力墙结构为研究对象。进行了轨道交通车致激励下,建筑在基础处、沿着高度方向和沿着楼层水平方向的振动监测,并以1/3倍频程铅垂向振级加速度级、竖向四次方振动剂量值等评价标准进行了分析。研究结果表明:结构距离隧道内侧轮廓55 m时,结构内仍能监测到明显的轨道交通车致振动,且相关评价量值可能超过规范限值;此外,现有规范未明确地铁振动的选取依据,按照不同取值方法确定的评价量值可能严重低估轨道交通振动的影响;沿结构高度方向,地下1层至地上3层测点的竖向振动响应未明显降低,并且在顶部出现放大;楼板中心处的竖向振动相对于楼板边缘处存在明显的放大,板中心处的竖向四次方振动剂量值可达板边处的345%,对应的竖向振动加速度级最大值可增大12.9 dB。To study the vibration influence of urban rail transit on buildings along the line,a frame-shear wall structure near a subway was selected as the research object.Under the excitation of rail transit vehicles,vibration monitoring of typical buildings was carried out at the foundation,along the height direction and the horizontal direction of the building,and the evaluation criteria such as 1/3 octave plumb vibration acceleration level,peak acceleration,and plumb fourth power vibration dose value were used for the analysis.The research results indicate that when the structure is 55 meters away from the inner contour of the tunnel,significant subway-induced vibration can still be detected inside the structure,and the relevant evaluation values may exceed the regulatory limits.In addition,the existing regulations do not specify the selection criteria for subway vibration,and the evaluation quantities determined by different value methods may seriously underestimate the impact of subway-induced vibration.Along the height direction of the structure,the vertical vibration response of the measurement points from the first underground level to the third above ground level did not significantly decrease,and there may be amplification at the top.The vertical vibration at the center of the floor slab is significantly amplified compared to the edge of the floor slab.The plumb fourth power vibration dose value at the center of the slab can reach 345%of that at the corner of the slab,and the corresponding maximum vertical vibration acceleration level can increase by 12.9 dB.

关 键 词：车致振动 结构 楼板 振动放大 振动加速度级 

分 类 号：X839[环境科学与工程—环境工程]