大跨度桥上铺设无砟轨道结构设计研究

分析日本、德国、UIC及我国标准中对铺设无砟轨道大跨度桥梁刚度要求,研究和探讨大跨度桥梁梁端道床板稳定性、扣件上拔力计算、大梁缝处轨道结构设计、钢轨伸缩调节器区无砟轨道结构设计等桥上无砟轨道的关键问题,提出结构设计方法,以期为我国大跨度桥上铺设无砟轨道结构设计提供参考。

Research on the structural design of ballastless tracks on the long-span bridges

The article analyzes the requirements on the stiffness of long-span bridges where ballastless tracks are laid set by Japanese,Germany,UIC and China standards and discusses some key problems such as the stability of ballast bed board on the beam end,calculation of up-pull force of fasteners,track structure design of girder joints and proposes structure design methods in order to provide reference for the structural design of ballastless tracks laid on the long-span bridges.