北京交通大学学报2017，Vol.41Issue(4)：23-30,39,9.DOI:10.11860/j.issn.1673-0291.2017.04.004
地铁线邻近建筑物振动特性及参数影响分析
Analysis of vibration characteristics and influence parameters of buildings adjacent to subway line
摘要
Abstract
The spatial coupled dynamic model of vehicle-track-tunnel and ground-building structure is established,and the spatial coupled vibration analysis of vehicle,track,foundation and building structure is realized by setting up the interaction relationship between the sub-models.The reliability of the model is verified by related field research and test.The effect of tunnel burial depth,building height,floor thickness,train speed and other parameters on the vibration characteristics and the law of vibration attenuation of buildings are analyzed.The results show that there is a vibration amplifying area in the range of 10～60 m from the centerline of the tunnel when the burial depth of the tunnel varies from 11.6 m to 21.6 m.The vibration decrease amplitudes of the floors range from 8.3 dB to 13.4 dB when the burial depth of tunnel increases from 11.6 m to 21.6 m,and the vibration modes of buildings change from high-order modes to low-order modes.The vibration level of buildings near the subway line decreases with the decrease of buildings' height.The range of vibration level amplitude of each floor is from 0.9 dB to 7.4 dB when the thickness of floors increases from 0.15 m to 0.25 m.The decline in vibration level amplitude is from 5.7 dB to 6.9 dB when the speed of the subway decreases from 80 km/h to 40 km/h.Thus,when the subway line is prior to the existence of buildings,the thickness of building floors should be increased properly,the speed of vehicle should be decreased and the vibration amplification area should be shied away so as to effectively control structural vibration of buildings.关键词
轨道交通/建筑物振动特性/数值模拟/振动放大区Key words
rail transit/vibration characteristics of building/numerical simulation/vibration amplification area分类
交通工程引用本文复制引用
孙成龙,高亮,侯博文,王艺臻..地铁线邻近建筑物振动特性及参数影响分析[J].北京交通大学学报,2017,41(4):23-30,39,9.基金项目
中国铁路总公司科技研究开发计划重点课题(2016G009-A,2015YJ121) （2016G009-A,2015YJ121）
中央高校基本科研业务费专项资金(2016JBM037)Science and Technology Research and Development Key Program of China Railway Corporation (2016G009-A,2015YJ121) （2016JBM037）
Fundamental Research Funds for the Central Universities(2016JBM037) （2016JBM037）
