铁道科学与工程学报2025，Vol.22Issue(10)：4636-4649,14.DOI:10.19713/j.cnki.43-1423/u.T20250090
地铁上盖建筑车致环境振动预测模型及影响因素研究
Study on the prediction of building vibration induced by subway operation and influencing factors
摘要
Abstract
With the continuous improvement of urban rail transportation system,the environmental vibration problem caused by subway operation has become increasingly prominent.Based on the fixed-interface modal synthesis method in the dynamic substructure method,this paper established a two-dimensional finite element model of the tunnel-soil-building coupled system.By comparing the calculation results with that from the finite element model of the overall structure,the effectiveness of this method in the study of vehicle-induced environmental vibration was verified,and the problem of applying artificial boundaries was explored.Based on this prediction model,the vibration propagation law and the vibration characteristics of the building were systematically analyzed from three aspects:vehicle intersection,soil parameters,and building parameters.The research results show that the dynamic substructure method has significant advantages when studying the vehicle-induced environmental vibration characteristics of the building above subway lines.It can reduce the degrees of freedom of the model while ensuring the calculation accuracy,improve computational efficiency,and lower the demand for hardware.Vehicle intersection,soil parameters,and building parameters all have significant impacts on the building vibration,mainly influencing its vibration amplitude.In general,the vertical vibration of the building exhibits a gradually increasing tendency as the number of stories increases.When adopting vibration reduction designs for subway lines,since soft soil has certain vibration attenuation properties,corresponding vibration reduction measures should be selected according to the actual soil.The number of floors of the building is not the key factor determining its vehicle-induced vibration.It cannot be simply thought that the higher the building above the subway is,the greater the impact of vehicle-induced vibration would be.Instead,the comprehensive effect of multiple factors needs to be considered.If a new tunnel is built on the existing underground lines,the reflection effect formed by the vehicle-induced vibration propagation is very likely to affect various performances such as the dynamic train operation.关键词
城市轨道交通/环境振动/上盖建筑/固定界面模态综合法/参数组合分析Key words
urban rail transit/environmental vibration/over-track building/fixed-interface component mode synthesis/parameter combination analysis分类
交通工程引用本文复制引用
张小安,王庞瑞,李姝婷,杨建近,徐磊,张晓芸..地铁上盖建筑车致环境振动预测模型及影响因素研究[J].铁道科学与工程学报,2025,22(10):4636-4649,14.基金项目
国家自然科学基金资助项目(52362049,52208446) （52362049,52208446）
甘肃省科技计划资助项目(25JRRA158) （25JRRA158）
中国国家铁路集团有限公司科技研究开发计划项目(L2024G008) （L2024G008）
兰州交通大学-对口支援高校联合创新基金资助项目(LH2023016) （LH2023016）
