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分析高速无砟道岔轨道刚度的组成特点,从舒适性、应力、变形、振动和部件刚度匹配5个方面提出了高速道岔刚度合理取值的评判,运用车辆-道岔空间耦合动力学理论建立了高速道岔轨道合理取值的确定方法。运用该方法分析了时速350 km客运专线无砟道岔轨道刚度的合理取值,结果表明:22.5～27.5 kN/mm的扣件系统刚度,270～330 kN/mm的轨下胶垫刚度,24～30 kN/mm的板下胶垫刚度最为合理。
The compositional characteristics of orbit stiffness of high-speed ballastless turnout are analyzed. Judgment of the reasonable value of stiffness of high-speed switch is proposed from the aspects of comfort, stress, deformation, vibration and component stiffness matching. The coupling theory of vehicle- Determination of Reasonable Value for Turnout orbit. The results show that the stiffness of fastener system with 22.5 ~ 27.5 kN / mm, the rigidity of rail under 270 ~ 330 kN / mm, the thickness of rail under 24 ~ The stiffness of the pad under 30 kN / mm is the most reasonable.