再说位移法

Further Discussion on the Displacement Method

本文在力法基础上指出单根杆的杆端弯矩是杆端支承变动的函数,转入标系结构后,将其结点视作杆端支承,自然得出杆端弯矩是结点位移的函数;根据独立位移与独立平衡方程的对应关系列出位移法方程的概念式;利用叠加原理展开概念式,建立起位移法的典型方程。

It is held in this paper that the pole-end bending momentof the single pole is the function of the change in the pole-end bearing force. If the structure turned into that of a linkage system and the junction is regarded as the pole-end bearing ,the pole-end bending moment is certainly the function of junction displacement. Using superposition theorem to unfold what is achieved by making use of the corresponding relations between the formula of independent displacement and the formula of independent balance, a typical formula of displacement is established.