结构力学中位移法与力矩分配法的关系分析

Modified iterative initial values for the reliability calculating of marine concrete structures

超静定结构的求解方法在综合考虑平衡条件、几何条件和物理条件的情况下日益增多,为此需要建立近似状态使其求解方法简化。通过研究位移法的计算过程,引入曲率半径、转动刚度、分配系数和传递系数将位移法求解过程中的方程消除,从而得到不必解算联立方程的近似解法——力矩分配法。力矩分配法不必联立方程,计算步骤简单,可以直接求得杆端弯矩,大大降低了求解问题的难度。

The solution methods of statically indeterminate structures are increasing under the condition of comprehensive consideration of equilibrium conditions,geometric conditions and physical conditions.By studying the calculation process of displacement method,the curvature radius,rotation stiffness,distribution coefficient and transfer coefficient are introduced to eliminate the equation in the process of displacement method,so that the approximate solution of simultaneous equation without solving moment distribution method is obtained.The moment distribution method does not need simultaneous equations,the calculation procedure is simple,and the moment at the end of the rod can be calculated directly,which greatly reduces the difficulty of solving the problem.