多梁式平面弯粱桥的横梁分析法

将宽跨比较大的多梁式平面弯梁桥的上部结构看作是主梁与横梁互为弹性支承的格构，考虑弯扭耦合作用的特点，应用有限差分法原理求出结点的挠度及转角，进而找出结点力。由于摒弃横梁刚度无限大的假定，充分考虑横梁受力后的实际挠曲变形，因此能同时比较精确计算主梁荷载横向分布与弯梁桥的横梁内力。

Crossbeam Analysis Method of Multibeam Plane Curved Beam Bridge

in this paper,the superstructure of a multibeam curved beam bridge is regarded as grillage beam elastically supported with the crossbeams and girders. The coupling effects of bending and twisting action are taken into consideration. The deflexion and angle of rotation of nodal point can be obtained on the ground of finite difference method and the forces of nodal points are further obtained.The ideas in this paper are expressed with clarity and conciseness,so it is easy for engineers to accept.