Abstract: In this paper, a method for calculating the load distribution of in-plane curved bridge with rigid cross section is derived from the principle of minimum potential energy. Its essentials are as follows: 1. The deflection and twist for in-plane curved bridge under a unit of concentrated load can be given through application of Rayleigh-Ritz method. 2. By the aid of the compatible conditions of deformation, the load distribution of in-plane curved bridge can be easily determined.

摘要： 本文利用能量原理推导出具有刚性横截面曲线粱桥的横向分布计算方法,它的基本出发点是:1.借助于瑞利·里兹(Rayleigh-RiTz)法求出单位荷载作用下曲线梁桥的挠度和扭转角。2.根据变形协调条件求出荷载横向分布系数。