摘要
为了探究轨道敏感波长对现代有轨电车运行的影响,通过对某独立轮现代有轨电车在不同波长激励时的动力响应指标进行分析,得到电车的敏感波长范围;并以此生成轨道不平顺激励,分析线路在施加此激励前后,车辆通过时参数变化。电车在直线线路运行时,轨向和水平不平顺主要影响横向加速度,高低不平顺主要影响垂向加速度。电车在曲线线路运行时,轨向和水平不平顺分别影响电车的中低速和高速曲线通过性能,两者同时作用时对电车曲线运行具有综合的影响效果,高低不平顺主要改变电车高速曲线运行状态。方向水平逆向不平顺对电车安全性影响会随着波长增大而减小,合理曲线超高能够降低影响,通过分析敏感波长与电车运行的关系,对电车通过不同激励路段形成指导。
In order to explore the influence of the track sensitive wavelength on the operation of modern trams,the dynamic response index of a modern tram with the independent wheels under different wavelengths excitations was analyzed to obtain the sensitive wavelength range of the tram.Then,the irregular excitation of track was generated,and the parameter changes of vehicle passing before and after the excitation were analyzed.When the tram runs in a straight line,the direction and horizontal irregularity mainly affect the lateral acceleration,and the longitudinal irregularity mainly affect the vertical acceleration.When the vehicle runs on a curve,the direction and horizontal irregularity affect the low-speed and high-speed curve passing performance of the tram respectively.The combination of the two has a comprehensive effect.The longitudinal irregularity mainly changes the running state of the trolley curve of high speed.The impact of the direction and horizontal reverse irregularity of the tram’s safety will decrease with the increase of the wavelength,and the reasonable curve can reduce the impact.By analyzing the relationship between the sensitive wavelength and the operation of tram,it has guiding significance for tram to pass through different excitation sections.
作者
未向柳
许贵阳
WEI Xiang-liu;XU Gui-yang(School of Mechanical-electronic and Vehicle Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;Urban Rail Transit Vehicle Service Performance Guarantee Key Laboratory of Beijing, Beijing University of Civil Engineering and Architecture, Beijing 100044, China)
出处
《科学技术与工程》
北大核心
2021年第31期13497-13504,共8页
Science Technology and Engineering
基金
国家自然科学基金面上项目(51975038)
北京市自然科学基金重点项目(KZ202010016025)。
