三线平行地铁车站振动及传播规律实测研究  

Experimental Study of Vibration and Propagation Patterns in Three Parallel Subway Stations

作　　者：周思凡 冯青松[1] 成功[1] 张凌 万宇婷 罗信伟 Zhou Sifan;Feng Qingsong;Cheng Gong;Zhang Ling;Wan Yuting;Luo Xinwei(State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure,East China Jiaotong University,Nanchang 330013,China;Guangzhou Metro Design and Research Institute,Guangzhou 510010,China)

机构地区：[1]华东交通大学轨道交通基础设施性能监测与保障国家重点实验室,江西南昌330013 [2]广州地铁设计研究院股份有限公司,广东广州510010

出　　处：《华东交通大学学报》2024年第4期1-9,共9页Journal of East China Jiaotong University

基　　金：国家自然科学基金项目(52178423,52068029);江西省教育厅科学技术研究项目(GJJ210644)。

摘　　要：【目的】研究三线平行地铁进出站引起的地铁车站的振动特性。【方法】以国内某城市三线平行换乘地铁车站为研究对象,基于现场实测数据分析该车站振动特性及传播规律。【结果】受线路建成及运营影响,该车站内各站台振动响应差异较大,进站工况下,站台1,站台2和C线站台平均Z振级分别为81.9,91.4,61.7 dB;站台1和站台2振动主要频段为75~125 Hz。出站工况下,3个站台的平均Z振级分别为82.7,93.8,63.7 dB;站台1和站台2的振动主要频段为50~100 Hz。C线站台振动响应在两种工况下均集中在50~60 Hz内。【结论】在车站内多数测点均可发现出站工况下振动大于进站工况,最大差值约2.5 d B。车致振动传递至地面一层后会先产生一定衰减,传递至地面二层时则会产生放大,振动放大约3.6~5 dB。车致振动在该车站建筑内的传递所产生的衰减较小,振动衰减主要依靠的是土层,振动衰减量约为0.53 d B/m。研究成果可为类似结构、平行接入多条线路的地铁车站及车站上盖建筑的振动预测、振动舒适度评价及减振设计提供参考依据。【Objective】To study the vibration characteristics of subway stations caused by the entry and exit of three-line parallel subway stations.【Method】Taking a third-line parallel transfer subway station in a domestic city as the research object,the vibration characteristics and propagation rules of the station were analyzed based on the field measured data.【Results】Affected by the completion and operation of the line,the vibration response of each platform in the station varied greatly.Under the inbound condition,the average Z vibration levels of plat-forms 1,2 and C were 81.9,91.4,61.7 dB,and the main frequency bands of platform 1 and 2 were 75~125 Hz.Un-der outbound conditions,the average Z vibration levels of the three platforms were 82.7,93.8,63.7 dB,the main frequency band of vibration of platforms 1 and 2 is 50~100 Hz,while the vibration response of platform C is con-centrated within 50~60 Hz under both conditions.【Conclusion】In most measuring points in the station,it can be found that the vibration under outbound conditions is greater than that under inbound conditions,and the maxi-mum difference is about 2.5 dB.After the vehicle-induced vibration is transmitted to the ground floor,it will first produce a certain attenuation,and when it is transmitted to the ground floor,it will produce amplification,and the vibration is about 3.6~5 dB.The attenuation of vehicle-induced vibration transmitted in the station building is small,and the vibration attenuation mainly depends on the soil layer,and the vibration attenuation is about 0.53 dB/m.The research results can provide a reference for vibration prediction,vibration comfort evaluation and vibration reduction design of similar structures,subway stations and buildings with parallel access to multi-ple lines.

关 键 词：环境振动 地铁车站 现场实测 振动传递规律 

分 类 号：TB535[理学—物理] U231[理学—声学]