静定平面刚架剪力图和弯矩图画法研究

Research on the Drawing Methods of the Shearing Force and Bending Moment Diagram of Static Determinacy Plane Rigid Frame

针对静定平面刚架剪力图和弯矩图常用绘制方法,如方程式法、简捷法及叠加法等,存在计算量大、比较抽象、易于出错等缺点,根据荷载、内力之间的微分、积分关系,分析荷载形式、大小与剪力图、弯矩图的曲线形状、数值之间的关系,编制了剪力图和弯矩图的绘制口诀,据此,做到直观、快速、准确绘制静定平面刚架的剪力图和弯矩图。

For the common drawing methods of static determinacy plane rigid frame shearing force diagram and bending moment diagram, such as equation method, short-cut method and superposition method, there are such weaknesses as a large amount of calculation,relative abstraction and fallibility. The pithy formula for shearing force diagram and bending moment diagram drawing is made up by analyzing the relationship between the load pattern and size and the curve shape and numeral value of shearing force diagram and bending moment diagram based on the relationship between load and internal force in differential and integral to draw the shearing force and bending moment diagram of static determinacy plane rigid frame intuitively, quickly and accurately.