论文部分内容阅读
轨道几何形位不平顺是影响轮轨动态作用力和行车平稳性的主要因素之一,是当前高速重载和提速线路的主要研究内容。利用动力模拟仿真计算多种类型轨道单一不平顺、复合不平顺和随机不平顺激扰下提速车辆的动力响应,并着重分析轨道复合不平顺对提速列车运行安全性和平稳性的影响。对各种轨道不平顺条件下车辆动力响应的计算结果进行分析对比,找出相对不利的轨道不平顺类型及其波长和幅值,为现场控制各种类型轨道不平顺、制定提速线路轨道养护维修和不平顺管理标准提供理论依据。结果表明,方向和水平复合不平顺对车辆运行的安全性和平稳性的影响较大,是需要重点控制的轨道不平顺类型。
Uneven track geometry is one of the main factors that affect the wheel-rail dynamic force and ride stability, and is the main research content of the current high-speed heavy load and speed-up lines. Dynamic simulation is used to calculate the dynamic responses of various types of orbits with single irregularities, complex irregularities and random disturbances, and the effects of orbital compounding irregularities on the safety and stability of the train are analyzed. The calculation results of vehicle dynamic response under various track irregularities are analyzed and compared to find out the relatively unfavorable track irregularities and their wavelengths and amplitudes so as to control the unevenness of various types of tracks on site and to formulate the track maintenance and repair of speed- And to provide theoretical basis for the standard of non-smooth management. The results show that the combination of direction and level has a greater impact on the safety and stability of vehicle operation and is an irregular track type that needs to be controlled.