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在分析客运专线有砟道岔轨道刚度组成的基础上,建立了有砟道岔轨道动刚度的计算方法,分析了我国时速250 km客运专线有砟道岔轨道动刚度特性.结果表明:心轨的动静刚度比最大,基本轨、尖轨和导轨次之,翼轨最小;在小于100 Hz的频段上,各钢轨的动刚度随着激振频率增加而减小;在0～250 Hz的频段上,各钢轨会出现3个共振峰.
On the basis of analyzing the composition of the orbit turnout rigidity of the passenger dedicated railway line, the calculation method of the dynamic stiffness of the turnout rail track is established and the dynamic stiffness characteristics of the turnout rail track with the speed of 250 km / h is analyzed. The results show that the dynamic and static stiffness And the minimum of the wing rail. The dynamic stiffness of each rail decreases with the increase of excitation frequency in the frequency range of less than 100 Hz. In the frequency band of 0 ~ 250 Hz, The rail will have 3 formants.