青岛胶东国际机场列车振动影响研究

Study on train vibration influence of Qingdao Jiaodong International Airport

以往针对高铁列车对建筑结构振动影响的研究多数情况建筑位于线路两侧,对于高铁正线在建筑物正下方高速穿越所造成的结构振动影响研究较少。本文以青岛胶东国际机场为实例,针对高速列车穿越引起的航站楼及附属结构振动影响展开研究,对列车轮轨激励和列车风造成的建筑结构振动响应进行计算对比,并分析了航站楼结构列车振动响应的幅值大小、分布特点、时程特点等规律。为减小列车振动影响,在中心区南侧梁板区柱底位置设置了竖向隔振支座,计算表明,隔振支座可以有效隔离列车行驶造成的振动影响。

Most of the previous studies on the impact of high-speed railway trains on the vibration of building structures are located on both sides of the line,but there are few studies on the impact of structural vibration caused by the high-speed crossing of high-speed railway main line directly below the building.Taking Qingdao Jiaodong International Airport as an example,the vibration impact of the terminal and auxiliary structures caused by high-speed train crossing is studied,the vibration response of the building structure caused by train wheel rail excitation and train wind are calculated and compared,and the amplitude,distribution characteristics and time history characteristics of the train vibration response of the terminal structure are analyzed.In order to reduce the impact of train vibration,a vertical vibration isolation support is set at the bottom of the column in the south of the central area.The calculation shows that the vibration isolation support can effectively isolate the vibration impact caused by train running.