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随着运行速度的提高,高速列车对环境振动的影响变得更为明显。列车造成的振动会进一步传递至上部结构,影响上部的结构安全性和人员舒适性,需要在设计时予以解决。本文对高速列车通过北京大兴国际机场时航站楼的结构振动响应进行了计算分析,对车致振动的幅值大小、分布特点、时程特点等规律进行了研究,并重点研究了轮轨激励和列车风各自造成的振动影响。结果表明,对于北京大兴国际机场这种梁板结构地下站场形式的封闭空间,当列车速度达到350km/h时,列车风引发的列车振动响应明显,设计时需充分考虑。
With the increase of operating speed, the impact of high-speed train on environmental vibration becomes more obvious. Vibration caused by the train will be further transmitted to the superstructure, affecting the structural safety and comfort of the upper part of the need to be addressed at design time. In this paper, the structural vibration response of high-speed train passing through Beijing Daxing International Airport is calculated and analyzed. The amplitude, distribution characteristics and time-history characteristics of the vehicle-induced vibration are studied. And train wind their own vibration effects. The results show that when the train speed reaches 350km / h, the train vibration response caused by train wind is obvious and the design time needs to be taken into full consideration for the closed space in the form of underground station with beam plate structure such as Beijing Daxing International Airport.