Shear-lag Effects Analysis of Continuous Rigid-frame Box Girder Bridge

According to the continuous rigid-frame box girder bridge with single box three rooms, two models were created which considered the interaction between pile and soil£o taper section 3D beam element model and, 3D compounding model with solid element and shell element.The shear-lag effects under surface load and concentrated load were analyzed and the impact of these two models on dynamic characteristics discussed.The result shows that, under static loading, the shear effects of boxing beam is notable, and the taper section 3D beam element model which considered the interaction between pile and soil has higher precision and e~ciency.The obtained analysis results have great practical values for the design of related engineering structures.