城市轨道交通弹簧浮置板轨道过渡段设计分析  

Analysis of Spring Floating Slab Transition Section Design in UMT

作　　者：耿传智[1] 刘在庆[1] 

机构地区：[1]同济大学铁道与城市轨道交通研究院,上海副教授201804

出　　处：《城市轨道交通研究》2011年第2期39-41,75,共4页Urban Mass Transit

摘　　要：针对弹簧浮置板轨道的不同过渡段形式建立有限元模型,采用移动轮对荷载进行动力仿真计算。分析不同过渡形式下钢轨的动力特性,包括动态的钢轨位移、钢轨挠度变化率以及钢轨加速度。计算结果表明,采用弹性支承块和加密浮置板弹性支座相结合的方式能使钢轨动态位移变化更为平缓,适当增加加密的弹簧支座数量也有利于过渡段钢轨的动态平顺性。Different finite element models for different types of spring floating slab transition sections have been built. The moving loads of wheel set are used to analyse the dynamic performance of rail in transition section. The designs of trasition section are evaluated by the dynamic displacement of rail, the change ratio of rail deflection and the acceleration of rail. The results suggest that the design shall use both elastic supporting block and spacing deduced spring to smooth the dynamic change of rail displacement, and to increase proper numbers of spacing deduced spring, also help to improve the track regularity of transition section.

关 键 词：城市轨道交通 弹簧浮置板 轨道 过渡段设计 

分 类 号：U213.21[交通运输工程—道路与铁道工程]