首页|人群与交通振源下综合交通枢纽振动规律研究

人群与交通振源下综合交通枢纽振动规律研究

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原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
以武汉站为例,结合现场实测和数值模拟,研究了综合交通枢纽结构在人群荷载与多重交通振源耦合作用下的振动特性,探究了候车层的最不利振源工况和振动敏感区,并进行了振动舒适度评价.结果表明:相比于单一荷载作用,人群荷载与其它交通振源耦合作用下候车层楼板峰值加速度明显增大;随着振源数目增加,候车层楼板的峰值加速度增大,振动加速度频域段拓宽,振动衰减速度放缓,但人群荷载参与耦合会加速振动的衰减;耦合振源的振动加速度主频越接近,峰值加速度放大越明显;候车层振动敏感区为楼板跨中位置,最不利振源工况为人群荷载与高铁、地铁以及路面交通荷载耦合的情况;候车层满足计权加速度下的振动舒适度要求,但其振动超过四次方振动剂量值限值.本研究对交通枢纽结构的运营和振动控制具有重要的工程意义.
Research on the Vibration Law of Integrated Transportation Hub Under the Influence of Crowds and Traffic Vibration Sources
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.

integrated transportation hubfield measurementnumerical simulationvibration cou-plingcomfort evaluationhuman-induced vibration

吴巧云、项复佳、李佳靖、谢伟平

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武汉工程大学 土木工程与建筑学院,湖北 武汉 430074

武汉理工大学 土木工程与建筑学院,湖北 武汉 430070

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

国家自然科学基金湖北省杰出青年项目湖北省青年拔尖人才计划项目

520783952023AFA103鄂组通[2021]17号

2024

10.13579/j.cnki.2095-0985.2024.20230539

土木工程与管理学报
华中科技大学

土木工程与管理学报

CSTPCDCHSSCD
影响因子：0.837
ISSN：2095-0985
年,卷(期)：2024.41(3)