摘要
雄安站地面夹层设置了一个回字形交通连廊,该交通连廊采用钢结构吊桥形式吊挂于承轨层下,吊桥结构舒适度分析是其设计重点之一。首先将不同的步频、步幅单人行走激励叠加得到人群行走激励,以此来计算交通连廊在人群行走激励下的加速度响应。然后建立车桥耦合振动模型,进行上部列车振动及人行激励同时作用下的交通连廊舒适度分析,从加速度云图、加速度时程曲线、典型频谱曲线等几方面对计算结果进行分析。结果表明,该交通连廊舒适度满足要求。
A circular traffic corridor is set up on the mezzanine floor of Xiong’an Railway Station,and the traffic corridor is suspended under the rail bearing layer by using steel structure suspension bridge structure form.The comfort analysis of suspension bridge structure is one of the key points in its design.Firstly,different step frequency and stride length were superimposed to obtain the crowd walking excitation,and the acceleration response of the traffic corridor under the crowd walking excitation was calculated.Then,the vehicle-bridge coupled vibration model was established,and the comfort analysis of the traffic corridor under the simultaneous action of the upper train vibration and pedestrian excitation was carried out.The calculation results were analyzed from the acceleration cloud diagram,acceleration time history curve and typical spectrum curve and else.The results show that the comfort of the traffic corridor meets the requirement.
作者
于军港
YU Jungang(China Railway Design Corporation,Tianjin 300308,China)
出处
《建筑结构》
CSCD
北大核心
2021年第24期39-43,102,共6页
Building Structure
基金
中国铁路设计集团有限公司重点课题:时速200km及以上的“房桥合一”结构体系及关键技术研究(2021A240702)。
关键词
雄安站
吊挂
连廊
振动响应
舒适度分析
Xiong’an Railway Station
hanging
corridor
vibration response
comfort analysis
