基于最小势能原理,建立了刚架结构的间接荷载效应矩阵。将间接荷载效应矩阵转化为约束矩阵后,根据约束矩阵的性质,推导了刚结点转变为铰结点时约束矩阵自身的传递规律。将约束矩阵中导出的重分布弯矩向量与初始弯矩向量进行叠加,即可得到新刚架结构的内力。因为避免了刚度矩阵的再次形成与分解、计算结点位移等中间过程,所以使计算量大幅度减少。算例表明该文提出的简洁方法是正确、可靠和有效的。 Based on the principle of minimum potential energy, the indirect load effect matrix of rigid frame structure is established. After transforming the indirect load effect matrix into a constraint matrix, according to the nature of the constraint matrix, the transfer law of the constraint matrix itself is deduced when the node just turns into a hinge point. The internal force of the new frame structure can be obtained by superposing the redistribution moment vector derived from the constraint matrix and the initial moment vector. Because the stiffness matrix to avoid the formation and decomposition again, calculate the displacement of nodes such as the intermediate process, so that a substantial reduction in the amount of computation. The example shows that the concise method proposed in this paper is correct, reliable and effective.