有轨电车线路土质路基段单元式无砟轨道结构设计

Structural Design of Ballastless Track with Single Slab for the Soil Subgrade Section on Tram Line

参考铁路客运专线无砟轨道计算方法,对有轨电车线路土质路基段轨道承受的荷载作用进行了分类和组合。建立了无砟轨道的“梁-板”有限元模型,采用极限状态法对车辆荷载下的道床结构进行了设计,并基于容许应力进行了安全性复核。复核结果显示,道床正截面受弯承载能力、正常使用极限状态下的道床裂缝、道床强度等均满足规范要求。

Referring to the calculation methodology of the ballastless track on passenger dedicated railway line,the affordable load for tram soil subgrade section built on ballastless track with single slab structure design is categorized and regrouped.A"beam-shell"finite element model for ballastless track is constructed,and the limit state method is adopted to design the track structure under vehicle load,and the security based on allowable stress is reviewed.The result shows that the bending capacity of the front section of the track structure,the cracks under extreme state of normal use,and the track structure intensity are all up to the regulatory demands.