Analytical study on bending moment of long span pc slab for steel girders bridge caused by live load

Recently, with the spread of application of steel twin girders bridges, PC slab has become to be generally used and its span is getting longer. In construction of the New Tomei Expressway, we studied the most suitable shape and estimate of bending moment of PC slab which span length is over 6m that is limit of specifications for highway bridges. In this study, we calculated the bending moment of long span PC slab caused by B-class live load, using FEM analysis. We considered influence by the loading condition of the live load and anisotropy of PC slab. In addition, we suggested new design moment for long span PC slab, by analyzing the results of other bridges which calculated by similar technique.