预防列车脱轨措施及抗脱轨安全系数N的计算理论  

Measures to Prevent Train Derailment and Calculating Theory of Safety Coefficient N for Resisting Derailment

作　　者：向俊[1] 曾庆元[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《长沙铁道学院学报》2003年第2期1-8,共8页Journal of Changsha Railway University

基　　金：国家自然科学基金资助项目(50078006);铁道部科技研究开发计划项目(2001G029);教育部高等学校博士点科研基金项目(20010533004).

摘　　要：基于列车脱轨能量随机分析理论,指出预防直线提速货物列车脱轨的根本措施在于一方面要提高列车轨道(或列车桥梁)系统脱轨抗力作功σc,另一方面要降低此系统的输入能量σp,并对此进行了理论分析.同时还提出了预防脱轨的轨道参数改善方法及改善轨道参数后此系统抗脱轨安全系数N的计算方法,以确保直线段提速货物列车的正常运行,不会脱轨.最后还提出了现场行车试验验证方法,以鉴别上述计算理论的可行性.According to the theory of random energy analysis for train derailment,the fundamental measures to prevent derailment of accelerated freight train on tangent section are,on the one hand,to increase the work σc done by resistance to derailment,and on the other hand,to decrease the energy σp input to the traintrack(or trainbridge)system.A theoretical analysis of the fundamental measures to prevent deailment of accelerated freight train on tangent section is also made in this paper.The methods of improving track parameters and calculating safety coefficient N,which can ensure proper running of accelereated speed freight train on tangent section,are presented.The field test method applied to identify the feasibility of the calculation theory is put forward in the last part of the paper.

关 键 词：脱轨 预防 安全系数 直线货物列车 轨道参数 提速 试验 

分 类 号：U270[机械工程—车辆工程]