基于径向纤维直线假定的拱坝分析全调整法

Complete adjustment method for arch dam analysis based on the straight radial fibre assumption

本文从拱梁分载法的基本原理出发，在拱梁变形分析中以径向纤维直线假定代替原平截面假定，在此基础上发展出的全调整法能满足所有拱梁变位协调条件、径向微元平衡条件、剪应力互等关系和坝顶边界条件，提高了拱梁分载法计算体系的完备性．实例分析结果合理可靠．

Based on the basic principles of the trial load method and the straight radial fibre assumption, a complete adjustment method for arch dam analysis is developed. The compatibility of all displacement components, equilibrium of radial element in all directions, the boundary conditions, and the reaction between arches and cantilevers due to the effects of Poisson's ratio are considered. The global equations are assembled regularly and can be solved by the frontal method in short time. Results from illustrative examples and practical engineering problems show that the method is reasonable, efficient and superior to the conventional method.