钢桁梁明桥面轨枕板式轨道结构设计研究

Study on structure design of sleeper slab track on open deck of steel truss bridge

在系统总结轨枕板式轨道结构特点基础上,通过建立有限元分析模型,计算了轨枕板式轨道结构受力和变形。首次运用极限状态法对轨枕板式轨道进行配筋设计及检算,检算了轨枕板纵向承载力、裂纹宽度、轨枕板横向预应力损失,确定了合理的配筋方案,为类似大跨度钢桁梁明桥面上轨枕板式轨道设计提供参考。

Based on the systematic summary of the characteristics of the sleeper slab track structure,this paper calculates the force and deformation of the sleeper slab track structure by establishing the finite element analysis model.For the first time,the limit state method is used to design and check the reinforcement of the sleeper slab track.The longitudinal bearing capacity,crack width,transverse prestress loss and stress of the sleeper slab are checked,and the reasonable reinforcement scheme is determined,which provides reference for the design of the sleeper slab track on the similar large-span steel truss open deck bridge.