Shear Lag Effect for PC Continuous Curved Box-section Girder Bridge under the Moving Vehicular Loads

In order to analyze the shear lag effect for pre-stressed concrete continuous curved box-shaped girder bridge under the moving vehicular load, bridge and vehicle are taken as two separate systems in this paper, which are connect by the conditions of geometric compatibility and force equilibrium on the contact point of wheels and bridge deck, and a quarter vehicle mode with six parameters and two degrees of freedom and a three-dimension physical finite element mode have been obtained. The analysis shows that the shear lag effect of different locations of box-girder curved bridge with four types of curvature radius subjected to three different traffic conditions, seven different driving eccentric and four different width-span radius. The results show that the impacts on the shear lag effect for the pre-stressed concrete continuous curved box-shaped girder bridge which is due to the variation of the curvature radius, width-span ratio, vehicle speed and driving eccentric.