土木工程与管理学报2024，Vol.41Issue(3)：28-35,8.DOI:10.13579/j.cnki.2095-0985.2024.20230539
人群与交通振源下综合交通枢纽振动规律研究
Research on the Vibration Law of Integrated Transportation Hub Under the Influence of Crowds and Traffic Vibration Sources
摘要
Abstract
Taking Wuhan Station as research object,this paper studied the vibration characteristics of the integrated transportation hub structure under the coupling of crowd load and multiple traffic vibra-tion combined with field measurement and numerical simulation,explored the most unfavorable vibra-tion source conditions and vibration sensitive areas of the waiting floor,and evaluated its vibration comfort level.The results show that,compared with the single load,the peak acceleration of the wait-ing floor increases obviously under the coupling of crowd load and other traffic vibration sources.With the increase of the number of vibration sources,the peak acceleration of the waiting floor slab increa-ses,the frequency domain of vibration acceleration widens,and the vibration attenuation rate slows down,but the crowd load will accelerate the vibration attenuation.The closer the main frequency of vibration acceleration of the coupled vibration source is,the more obvious the amplification of peak acceleration is.The vibration sensitive area of the waiting floor is the middle span of the floor,and the most unfavorable vibration source condition is the coupling of crowd load with the traffic load of high-speed railway,subway and road surface.The waiting floor meets the vibration comfort requirement un-der weighted acceleration,but its vibration exceeds the fourth power vibration measurement value lim-it.This study has important engineering significance for the operation and vibration control of transpor-tation hub structures.关键词
综合交通枢纽/现场实测/数值模拟/振动耦合/舒适度评价/人致振动Key words
integrated transportation hub/field measurement/numerical simulation/vibration cou-pling/comfort evaluation/human-induced vibration分类
建筑与水利引用本文复制引用
吴巧云,项复佳,李佳靖,谢伟平..人群与交通振源下综合交通枢纽振动规律研究[J].土木工程与管理学报,2024,41(3):28-35,8.基金项目
国家自然科学基金(52078395) （52078395）
湖北省杰出青年项目(2023AFA103) （2023AFA103）
湖北省青年拔尖人才计划项目(鄂组通[2021]17号) （鄂组通[2021]17号）
