中南大学学报（自然科学版）Issue(1)：314-320,7.DOI:10.11817/j.issn.1672-7207.2016.01.043
竖曲线桥上带减振扣件整体道床轨道动力学特性分析
Analysis on dynamic characteristic of monolithic track bed with damper fastener on vertical curve bridges
摘要
Abstract
In order to provide the logical proofs for the design of slab track on the vertically curved substructure, the dynamic characteristics of the monolithic track bed with damper fastener on the vertically curved bridges were researched under the effect of the train-induced dynamic load. A study on the monolithic slab track with damper fasteners of Guiyang subway line No. 1 was conducted by establishing a vertically coupled vibration model of vehicle−track−bridge system, based on the basic principle of wheel/rail system dynamics and the multi-body system dynamics theory. The influence of the different train speeds, the different gradient differences of track and the different radii of vertical curve of track on the dynamic responses of vehicles and track structure components were analyzed. From the point of view of safety and comfort for the operation, the numerical simulation indicates that for the monolithic slab track bed with damper fastener on vertically curved bridges:when the train speed reaches 80 km/h, the gradients difference is less than18‰for the track with vertical curve, the gradients difference is less than 4.5‰for the track without vertical curve, and the radius of the vertical curve is greater than 2.5 km;when the train speed reaches 100 km/h, the gradients difference is less than 10‰for the track with vertical curve, the gradients difference is less than 4‰for the track without vertical curve, and the radius of the vertical curve is greater than 4 km;when the train speed reaches 160 km/h, the gradients difference is less than 5‰for the track with vertical curve, the gradients difference is less than 2‰ for the track without vertical curve, and the radius of the vertical curve is greater than 5 km.关键词
减振扣件/多体系统动力学/整体道床/竖曲线Key words
damper fastener/multi-body system dynamics/monolithic track bed/vertical curve分类
交通工程引用本文复制引用
齐少轩,任娟娟,巫江,刘学毅..竖曲线桥上带减振扣件整体道床轨道动力学特性分析[J].中南大学学报（自然科学版）,2016,(1):314-320,7.基金项目
国家自然科学基金资助项目(51578472，U1434208)；中国铁路总公司科技开发计划项目(2015G001-F)(Project(51578472， U1434208) supported by the National Natural Science Foundation of China （51578472，U1434208）
Project(2015G001-F) supported by China Railway Corporation) （2015G001-F）
