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本文根据沈大线旅客列车构架振动测试资料对其振动特性进行了研究，得出了构架振动特性与其行车速度的一系列关系，为分析列车－轨道、列车－桥梁振动系统提供了一些重要的参数．
In this paper, the vibration characteristics of the passenger train frame vibration test are studied based on the Shenyang-Dalian line. A series of relationships between the vibration characteristics of the frame and its driving speed are obtained. Some important parameters are provided for the analysis of the train-rail, train-bridge vibration system .