Evaluation of vehicle-track-bridge interacted system for the continuous CRTS-II non-ballast track slab

作     者：ZHANG Nan ZHOU Shuang XIA He SUN Lu 

作者机构：School of Civil Engineering Beijing Jiaotong University School of Transportation Southeast University 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2014年第57卷第10期

页      面：1895-1901页

核心收录：

学科分类：08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：supported by the National Basic Research Program of China("973"Project)(Grant No.2013CB036203) the National Natural Science Foundation of China(Grant No.U1134206) the 111 project(Grant No.B13002) the Doctoral Fund of Ministry of Education of China(Grant No.20130009110036) 

主　　题：vehicle-track-bridge interacted system CRTS-II track slab in-span spring element equal-band-width storage 

摘      要：Considering the CRTS-II track slab,which is commonly used in the Chinese high-speed railway system,a vehicle-track-bridge dynamic analysis method is proposed in which the vehicle subsystem equations are established by the rigid body dynamics method,the track subsystem and the bridge subsystem equations are established by the FEM,the wheel-rail contact relation is defined by the corresponding assumption in vertical direction and the Kalker linear creep theory in lateral *** in-span spring element is derived to model the track-bridge interaction;the equal-band-width storage is adopted to fit the track structure with multilayer uniform section beam;and the dynamic equilibrium equations are solved by the inter-history iteration *** a case study,the response of a CRH2 high-speed train transverses a simply-supported bridge with successive 31.5m double bound pre-stress beams is *** result shows that using the vehicle-track-bridge interaction model instead of the vehicle-bridge interaction model helps predict the rotation angle at beam ends and choose an economic beam vertical stiffness.