钢—混凝土组合梁在我国铁路桥梁中的应用

Application of steel-concrete composite girders in China railway bridge

钢—混凝土组合梁桥具有整体受力经济、跨越能力强、充分发挥钢与混凝土各自材料性能优势并弥补各自缺点的合理性的突出优点。组合梁可以使桥梁更加轻巧,制造安装容易,施工速度快,对交通影响小,具有良好的发展前景和动力。铁路钢—混组合结构桥梁在跨越城市道路、铁路桥梁,无运架梁条件,无设置预制梁场条件以及高烈度地震区桥梁中具有显著优势。在我国铁路桥梁工程中,钢—混凝土组合梁在简支梁、连续梁、斜拉桥中均得到了应用。

Steel-concrete composite girders have the advantages of better economic gain,long span,combined the advantages of steel structure and concrete structure,fully exert the fortes of both steel and concrete,etc..The composite girders can make the bridge lighter,easier to manufacture and install,faster to construct,less to affect the traffic,and has a good development prospect.Steel-concrete composite girders of railway have significant advantages,when crossing urban roads or railways,no conditions for transporting or erecting,no conditions for setting prefabrication yard and in highly seismic region.In China railway bridge engineering,the steel-concrete composite girders has been applied in simply supported bridges,continuous bridges and cable-stayed bridges.