撬轨动力效应影响因素研究

摘要

The sled-track dynamic response is influenced by many factors. In this paper, a dynamic analysis finite element model is established combining with a sled-rail system of China, and based on orthogonal test design, the sensitivity influence of the factors including the regularity of rail, the stiffness of beams, the stiffness of beams, the speed of sled, the stiffness of rail fastenings, the stiffness of lining on sled-rail dynamic response were studied. The results show that three factors mostly influencing on sled-rail dnamic response are in turn: the regularity of track, the speed of sled, the stiffness of beams. The improvement of regularity of rail is the most important factors for lessening the sled-rail dynamic response.%撬轨动力响应受多因素影响,本文结合我国某类型撬轨系统,建立了撬轨动力分析有限元模型,基于正交试验方法,研究了轨道平顺度、轨道刚度、承载梁刚度、滑橇速度、衬片刚度、扣件刚度6种因素对撬轨动力响应的敏感性.研究表明:对撬轨动力响应影响最显著的3个因素依次为:轨道平顺度、滑撬速度、承载梁刚度；提高轨道平顺度是减小滑橇动力响应的最为关键的因素.