有砟-无砟轨道过渡段动刚度研究

轨道刚度是轨道结构动力特性的一个重要参量。由于轮轨间的动力作用，轨道刚度由动刚度来衡量更为合理。以往对过渡段的研究多是轨道静刚度。论文以有砟-旭普林无砟轨道过渡段为例，对过渡段静刚度过渡方案进行了分析，发现静刚度过渡方案不能满足动刚度的平缓过渡。又根据轨道结构和参数变化对动刚度的影响规律，调整了静刚度过渡的方案，提出了动刚度过渡相对合理的方案。

Study on Dynamic Rigidity of Ballasted-Ballastless Track Transition Section

Track rigidity is an important parameter for track dynamic characteristics.Due to dynamic action between wheel and track,it is more logical to measure track rigidity by its dynamic rigidity.Transition section is almost studied on track static rigidity before.This paper analyzes the transition program for transition section static rigidity by taking ballasted-Züblin ballastless track transition section for example.It is found that static rigidity transition program cannot satisfy the smooth transition for dynastic rigidity.Thereby it adjusts static rigidity transition program according to the influencing rule of track structure and parameter changes on dynamic rigidity and puts forward the relatively reasonable program for dynamic rigidity transition.