摘要
分析比较了目前国际上常用的车辆脱轨评价标准的特点及其不足 ,指出我国现行国家标准 GB 5 5 99—85评判车辆脱轨所存在的突出问题 ,在此基础上提出直接根据车轮抬升量评判脱轨的原理与方法。运用车辆 -轨道耦合动力学理论 ,对单轮对爬轨脱轨和跳轨脱轨过程进行了计算仿真 ,得出脱轨系数超限时间与车轮抬升量之间的关系 ,提出最大允许超限时间为 35 ms的安全准则 ,并进行了实际线路工况下整车轮轨相互作用脱轨仿真验证。最后提出针对我国车辆脱轨评判的建议标准及其实施细则。
After comparing the worldwide commonly used evaluation criteria for wheel derailment with that given in the China's national standard, GB 5599—85, some limitations were pointed out in the paper. A principle and the method were then proposed to evaluate the wheel derailment based on the variation of wheel vertical rise. Wheel derailment courses were simulated both for a single wheelset derailment and for a full scale vehicle derailment from the point of view of vehicle track coupling dynamics. Results obtained show that if the wheel vertical rise height is smaller than the wheel flange height, the wheel derailment can be avoided, no matter whether the derailment coefficient (Q/P) is larger than the Nadal value or not. A proposed derailment criterion for evaluation of railway vehicle safety is given in the last part of the paper.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2001年第2期17-26,共10页
Journal of the China Railway Society
基金
铁道部科技研究开发计划项目!(98J2 9)
高等学校骨干教师资助计划项目
国家杰出青年科学基金项目!(5952 551 1 )
关键词
脱轨准则
车轮抬升量
脱轨系数
轮轨动力学
铁路
列车
derailment
derailment criterion
wheel vertical rise
derailment coefficient
wheel rail dynamics
