摘要
地铁车辆段物业开发已成为大城市建设的热点,为了研究地铁车辆段库上建筑振动影响及分布规律,对北京某车辆段地铁振动进行现场实测,获得库内道床、柱及库上建筑各层地铁振动数据;建立柱-平台-建筑三维精细化有限元模型,以实测加速度作为输入激励,采用考虑列车行驶效应的多点输入加载方式,在并行计算平台上对地铁车辆段库上建筑振动进行数值模拟计算,模型计算结果与实测结果吻合较好。实测与数值计算结果表明库上建筑受地铁振动影响明显,建筑振动以竖向为主,楼板振动程度与自身固有频率有关,楼板自振频率应尽量避开地铁振动主频范围。
In recent years, the development of properties of subway stations has become a hot spot in the construction of large cities. In order to investigate the influence and distribution of metro vibration on metro depot superstructure, a field measurement on the vibration on a metro depot in Beijing has been carried out, to obtain the vibration data of the ballast bed, column and superstructure of the depot. A 3D refined finite element model of the building on metro depot has been established. With measured acceleration as input excitation, the multipoint input method that considered train driving effect was used to simulate the vibration on the depot super- structure on the parallel computation platform. The calculating results agreed well with the field measurement data. The results of both field measurement and numerical computation showed that the superstructure was significantly affected by metro vibration and the building vibration was largely vertical. The vibration strength of floor was related to its natural frequency. The natural frequency of floor should avoid the main frequency range of subway vibration.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2015年第8期98-103,共6页
Journal of the China Railway Society
基金
北京市博士后工作经费(2012ZZ-30)
北京市科学技术研究院青年骨干计划(2012-004)
关键词
地铁车辆段
振动污染
现场实测
多点输入
振动加速度级
metro depot
vibration pollution
field measurement
multi-support excitation
vibration acceleration level
