哈尔滨工程大学学报2024，Vol.45Issue(3)：423-431,9.DOI:10.11990/jheu.202209006
考虑轮轨多点接触关系的车轨系统地震响应分析
Seismic response analysis of vehicle-track system considering wheel-rail multipoint contact relationship
摘要
Abstract
The geometric relationship of wheel-rail multipoint contact was analyzed based on virtual penetration the-ory,while the wheel-rail contact forces were solved by using the modified Kik-Piotrowski method and Kalker's line-ar theory.These were done with the goal of studying the wheel-rail multipoint contact relationship during earth-quakes and its influence on the seismic response of the vehicle-track system.Then,a train-ballastless track system model was established,considering the wheel-rail multipoint contact relationship during an earthquake.The seismic response of this track system and the running safety of trains were studied by taking a high-speed railway as the re-search object.The results reveal that the two-point contact occurs between the wheel and rail during an earthquake and that the secondary contact patch has an important influence on the wheel-rail contact behavior.In addition,the wheel-rail multipoint contact relationship has an important influence on the wheelset lateral force and the derailment coefficient under earthquake.Thus,ignoring it will underestimate the running safety of trains.Wheel rise is not particularly sensitive to seismic intensity.关键词
轮轨多点接触/车轨系统/地震响应/虚拟渗透理论/Kik-Piotrowski方法/接触斑/无砟轨道/行车安全Key words
wheel-rail multi-point contact/vehicle-track system/seismic response/virtual penetration theory/Kik-Piotrowski method/contact patch/ballastless track/running safety分类
交通工程引用本文复制引用
朱小杰,王浩,周智辉,茅建校,郜辉..考虑轮轨多点接触关系的车轨系统地震响应分析[J].哈尔滨工程大学学报,2024,45(3):423-431,9.基金项目
国家自然科学基金项目(51722804,51978155). （51722804,51978155）
