关键词: 曲线箱梁桥, 剪力滞效应, 跨间矩阵, 节点矩阵, 传递矩阵法

Abstract: Based on the potential energy variation functional principle and the warping displacement function under shear lag effect of the box girder fender, the governing differential equations and boundary conditions of a curved box girder are derived. The closed so lutions of governing differential equations are derived by the elim ination method. And the starting parameter equations of calculating deformation and internal force for the curved girders are derived. Based on the static equilibrium and consecutive condition from the trans??boundary of the multi-span curved beam bridge, the interspaces-span matrix and the node matrix are proposed. The transfer matrix method in calculating the shear lag effect in continuous curved box girders is put forward. Case study shows that the method is effective.

Key words: curved box girder bridge, shear lag effect, interspaces-span ma rix, node matrix, transfer matrix method