Research on the mechanism of an adaptive device to deal with bridgehead jump

Abstract This article aims to solve the problem of vehicle bumping at bridgehead which caused by uneven settlement in transition section road and bridge. Firstly, a new adaptive device was established. In addition, mechanism revealed. Secondly, analytical calculations were performed for hitch plate equipped with device, deflection equation derived, solution compared numerical solution. Finally, applied actual project, elongation analyzed plate. The results show that can realize smooth road-bridge connection self-adjustment. Thus, bridge head jump be avoided case soil foundation settlement, overall slap slope. solutions maximum end slab are 2.571 cm 2.263 cm. corresponding longitudinal slope change rates 2.8‰ 2.5‰. One year after completion two devices is 1.63 1.97 cm, 3.74 provide reference solving jumping traffic head.