单跨静定三角形桁架的内力分析,一般传统的解法为“截面法”、“节点法”或“图解法”而本文则依据其受荷后的内力特点及规律提出一种新的解法,即“解体叠加法”。其具体方法就是将一个整体的桁架,按顺序分解成多个三角形,然后以各三角形为一独立单元按简支三角架进行分析,并得出各杆内力,最后再将各三角形叠合,从而快速地求得桁架各杆内力。 Single-span static triangular truss internal force analysis, the general traditional solution for the “section method”, “node method” or “graphic method” and this article is based on its internal forces after load characteristics and laws proposed a new solution, namely “Disintegration superposition method.” The concrete method is to decompose a whole truss into a plurality of triangles in sequence, and then take each triangle as an independent unit to analyze according to the simple tripod, and then derive the internal force of each bar, and finally superimpose the triangles to thereby Quickly obtain the truss rod internal force.