%0 Journal Article
%T CRTSⅡ型板式无砟轨道路桥过渡段动力响应研究<br>Study on dynamic response of CRTSII slab track of bridge-subgrade transition section
%A 周文涛
%A 涂鹏
%A 陈宪麦&lt
%A br&gt
%A ZHOU Wentao
%A TU Peng
%A CHEN Xianmai
%J 铁道科学与工程学报
%D 2018
%X 为研究CRTSⅡ型板式无砟轨道路桥过渡段动力响应规律，以CRTSⅡ型板式无砟轨道为研究对象，建立列车-轨道-路基(桥梁)仿真模型，包括路桥过渡段模型，研究列车速度对系统动力响应的影响，将路基段、桥梁段与路桥过渡段动力响应对比分析，并探讨过渡段不均匀沉降差和轨面折角对系统动力响应的影响。研究结果表明：过渡段车体和轨道动力响应指标大于路基段和桥梁段；过渡段车体和轨道动力响应随着不均匀沉降差值的增大而增大，不均匀沉降差限值建议为5 mm；过渡段车体和轨道动力响应指标随着轨面折角增大而增大，对于车体垂向和横向加速度而言，轨面折角限值建议为1‰，而对于轮重减载率和脱轨系数而言，轨面折角限值建议为1.5‰。<br>In order to study the dynamic response of CRTSII slab track transitional section, this paper took CRTSII slab ballastless track as the research object to establish train-track-embankment (bridge), including road and bridge transitional section model, and studied the effect of train speed on system. The dynamic response of the roadbed and bridge section was compared with that of the transitional section of the road and bridge. The influence of the differential settlement and the turning angle of the transitional section on the dynamic response of the system was also discussed. The results show that the dynamic response of body and track in transition section is larger than that in subgrade sections and bridge section. The dynamic response of the body and the rail of the transition section increases with the difference of the uneven settlement and the recommended value of the differential settlement difference is 5 mm. The dynamic response of the body and the rail in the transition section increases with the increase of the turning angle of the rail surface. For the vertical and lateral acceleration of the car body, the recommended value of the limit of the rail surface is 1‰, and for wheel load deloading ratio and derailment coefficient, the recommended value of the limit of the rail surface is 1.5‰
%K 无砟轨道
%K 动力响应
%K 列车-轨道-路基(桥梁)
%K 路桥过渡段&lt
%K br&gt
%K ballastless track
%K dynamic characteristics
%K train-track-subgrade (bridge)
%K bridge-subgrade transition section
%U http://www.jrse.cn/paper/paperView.aspx?id=paper_318844