力法基本结构的选择技巧  

作　　者：赵朝前 

机构地区：[1]四川建筑职业技术学院土木工程系,四川德阳618000

出　　处：《科技视界》2020年第29期90-92,共3页Science & Technology Vision

摘　　要：为了简化力法的计算过程,本文提出采用铰化法来选择连续梁和部分超静定刚架的力法基本结构,以使计算所需的弯矩图的绘制以及系数和自由项的计算变得较为简单容易,同时根据叠加原理得出杆端弯矩正好等于相应的多余未知力,使最终弯矩图的绘制更为简便。In order to simplify the calculation process of force method,this paper takes the hinge method on the continuous beam and the part of frame,selecting fundamental structure of force method.In this way,the moment diagram of drawing and calculation of the coefficient and the free items become easier.At the same time,according to principle of superposition,we may safely draw that the rod end bending moment is equal to the corresponding redundant unknown force.So the ultimate bending moment diagram drawing is easier.

关 键 词：基本结构 铰化法 多余未知力 系数 自由项 弯矩图 

分 类 号：O342-4[理学—固体力学] G642[理学—力学]