摘要
针对地震环境下铁路轮轨动态安全性及列车脱轨问题,本文详细地评述了近些年来国内外的研究进展情况。首先分析了地震作用下轮轨相互作用模型,包括密贴轮轨接触模型、简化轮轨弹性接触模型、轮轨弹性接触模型;然后分别评述了地震激励模型及输入方法的研究进展;接着分析了地震作用下列车脱轨判断准则、铁路地震预警系统及防脱轨措施的研究进展;接下来分析了车辆-轨道耦合动力学理论在地震作用下列车脱轨研究中的应用前景,并结合笔者目前现有工作,对车辆高速跳轨脱轨时的轮轨动态接触几何状态及其边界条件进行了初步的探讨;最后,建议了地震环境下列车运行安全性及脱轨机理等方面的今后研究重点。
Some recent advances in study on wheel/rail dynamic safety and train derailment of railway during an earthquake are reviewed in this paper. Firstly, the interaction models between wheel and rail are discussed, inclu- ding the closed contact model between wheel and rail, the simplified elastic contact model, and the elastic contact model. The description and the input method of the earthquake are then reviewed. Under the action of the earth- quake, the criteria of derailment of the train, the early warning systems and the anti-derailment measures are also discussed. In addition, in the research of the derailment during an earthquake, the applications of the theory of the wheel-rail coupled dynamics are analyzed, and the geometrical parameters of dynamic contact and their boundary conditions are discussed when a vehicle derails at high speed. Lastly, the promising future development in this area is discussed.
出处
《地震工程与工程振动》
CSCD
北大核心
2012年第6期82-94,共13页
Earthquake Engineering and Engineering Dynamics
基金
国家科技支撑计划项目(2009BAG12A01-B02-1)
四川省青年科技基金后续计划项目(2011JQ0048)
关键词
地震
轮轨系统
铁路
动态安全
脱轨
earthquake
wheel-rail system
railway
dynamic safety
derailment
