重载铁路桥梁设计的几点思考

简要介绍重载铁路特点及煤运通道蒙华铁路三荆段自然环境、桥涵分布情况;结合煤运通道重载铁路桥梁设计,从活载标准的选择、桥式、桥型方案的确定、常用跨度简支梁的选型、特殊跨度桥梁设计、桥墩设计等方面阐述重载铁路桥梁设计思路。结合煤运通道城烟特大桥对高桥桥型选择进行综合分析,桥墩设计应结合合理刚度选择、施工、景观等因素综合确定。最后对煤运通道三荆段桥梁设计进行反思和总结。

Study on the Design of Heavy Haul Railway Bridges

This paper briefly introduces the features of the heavy haul railway and the natural environment the distribution of bridges and culverts on Sanmenxia- Jingmen coal corridor. This paper addresses the design concepts for heavy haul railway bridges in terms of live load standard selection,bridge type and bridge scheme determination,selection of common span simply supported beam,design of special span bridge and bridge piers. With reference to Yancheng bridge on coal corridor,the selection of Takahashi bridge type is analyzed. The bridge design should address such factors as the selection of reasonable stiffness,construction and landscape and other factor. Finally the design of bridges on Sanmenxia-Jingmen section is reviewed and summarized.