铁道标准设计2019，Vol.63Issue(3)：12-16,5.DOI:10.13238/j.issn.1004-2954.201805150003
重载铁路桥上无砟轨道动力学选型研究
Study on Dynamics Selection of Ballastless Track on Heavy-haul Railway Bridge
摘要
Abstract
In order to provide a basis for the structural type selection of ballastless track on the railway connecting line on Bangladesh Padma Bridge, a coupled dynamic model of heavy-haul truck-ballastless track-bridge is established based on the theory of vehicle-track coupling dynamics and the dynamic responses of the freight trains with different axle loads on different ballastless tracks are compared and analyzed.The results show that with the increase of train axle load, the dynamic response of ballastless track on the bridge is increased obviously.To reduce track displacement, single layer ballastless track such as cast-in-place slab ballastless track and single layer long sleeper buried ballastless track is prioritized.To reduce the contact stress between track and bridge, and reduce the vibration acceleration of the bridge, double layer ballastless track such as the unit slab track and the long sleeper buried ballastless track should be prioritized.The selection of the ballastless track on heavy-haul railway bridge should synthetically take into consideration of the dynamic characteristics of ballastless track on the bridge, line characteristics and the interfaces with related specialties.The related results can provide reference for the selection of ballastless track on heavy-haul railway bridge.关键词
重载铁路/铁路桥梁/无砟轨道/动力学/选型Key words
Heavy-haul railway/Railway bridge/Ballastless track/Dynamics/Type selection分类
交通工程引用本文复制引用
徐浩,蔡文锋,林红松,颜华..重载铁路桥上无砟轨道动力学选型研究[J].铁道标准设计,2019,63(3):12-16,5.基金项目
中国中铁股份有限公司科技开发计划 (2016-重点-28) （2016-重点-28）
中铁二院科学技术研究计划 (KYY2016052 (16-18)) （KYY2016052 (16-18）
