统一杆件内力分析方法的探讨

本文在建立坐标系的基础上 ,对杆件的内力、外力的符号进行了简单、明确的统一规定 ,从而使杆件三种基本变形和平面刚架结构的内力分析统一用同一种方法完成。这种方法克服了过去存在的内力计算和内力图绘制方法的多样性、规定不统一、难以识记的缺点 ,具有概念清晰、计算简便、工作流程固定统一的优点 ,便于学校师生和广大工程技术人员学习和掌握 ,编制上机操作程序简单易行。

The probe into a unified method on analyzing internal forces of rod

This paper provides unified sign convention for the internal and external forces of rod on the basis of a local coordinate system. Three types of fundamental deformations in the internal forces of rod are analysed with the same method, and this method can be applied expansively in internal forces analysis of a plane rigid frame. The method has merits-a distinct concept, a handy calculation, the same working procedure. It is convenient for teachers, students and engineers to learn and apply it,and surmount difficulties on varied rules.