Investigation of reasonable sections for simply supported steel plate-concrete composite girder bridge

The simply supported steel plate-concrete composite girder bridge is widely used in bridge construction. Based on the economical height of girders formulas introduced in this paper, the structure parameters, including the height, stiffness of girders, the minimum compressive flange area, the ratio of steel consumption to span and the stress of the concrete slab are analyzed to obtain the reasonable section structures for this type of bridge. This is under the typical bridge width and the proper main girders arrangement in the state of stress control. The design suggestion of the corresponding structural parameters is given to guide the practical engineering.