工程设计中内力图的简捷作图法

提出一种新的作内力图简捷作图法。在计算四种内力时，不需要用截面法或分段列内力方程，直接应用最简单的加减法运算可求出各截面的内力。实质是对计算截面直接应用一系列静力平衡方程求解，而省略了截面法的截开和代替的两个步骤及梁中分段列剪力方程和弯矩方程的过程。

A SIMPLE AND DIRECT WAY OF DRAWING INTERNAL FORCE DIAGRAM IN ENGINEERING DESIGN

a new simple way of drawing internal force diagram is proposed. When calculating four kinds of internal, forces, you do not have to use section method or list interrnal force equations in segments. The internal forces of each section can be figured out simple using addition add subtraction. Infact we solve a series of static force balance equetions directly for each section,and the two steps of severing and substituting in section methed,as well as the proceduces of listing shearing stress equctions and bending torque equations,are omitted.