多拱梁法是把拱坝离散为一系列水平向的拱和竖直向的梁。一般是用分载法求解,即以拱或梁分担的荷载为未知数,以节点处的位移相等为条件。建立方程求解。本文放弃分载的概念。以节点(拱梁交点)位移为未知数,以节点平衡为条件,建立方程求解。该法概念清楚、算法有规律,很适于计算机自动计算。本文推导了拱单元、梁单元、基础单元的单元刚度矩阵。推导了各种荷载的等效节点力。最后提供了一个计算实例,以资与多拱梁分载法比较 The multi-arched beam method divides the arch dam into a series of horizontal arches and vertical beams. Generally, it is solved by the load sharing method, that is, the loads shared by the arches or beams are unknown, and the displacements at the nodes are equal. Set up equation solving. This article gives up the concept of offloading. The displacement of the node (arch-girder intersection) is unknown, and the equilibrium of the node is used as a condition to establish the equation. The concept of the law is clear and the algorithm is regular. It is suitable for computer automatic calculation. In this paper, the element stiffness matrixes of arch elements, beam elements and base elements are deduced. Derive the equivalent nodal forces for various loads. Finally, a calculation example is provided to compare the cost with the multi-arch beam load distribution method.