铁路斜拉桥钢混结合段传力途径分析与研究

Transmitting Force Way Analysis and Research of Steel-concrete Composite Segment of Gable-stayed Bridge Used as Railway Bridge

铁路上采用混合梁斜拉桥具有一定的优势。由于钢-混结合段构造复杂、传力途径类型多样,依托甬江特大桥,采用有限元分析方法,研究钢-混结合段各板件的传力机理,得出钢-混结合段不同位置各板件分担的内力比例,表明通过钢箱过渡段、钢-混结合段、混凝土过渡段,实现了内力均匀传递。

Hybrid girder cable-stayed bridge used as Railway Bridge has certain advantages.Due to the complexity of the structure of steel-concrete composite segment,the ways and types for force transmitting are varied.Relying on Yongjiang super major bridge,the internal force transmission of every steel-concrete composite segment part is studied by the finite element analysis,and the internal force ratio of different parts in different position of steel-concrete composite segment is got.The internal force uniform transmission is realized through steel box transition section,steel-concrete transition section and concrete transition section.