摘要
以位移法与弯矩分配法联合求解的交叉梁系平板网架与空腹网架结构,适用于各类边界条件下的正交正放、正交斜放、三向钢网架及钢筋混凝土空腹网架结构的内力分析,且求解简单方便。文中给出了考虑剪切变形时梁的弯矩分配系数,并列出了考虑剪切变形的基本梁元在外力作用下及支座产生单位位移时的杆端弯矩和剪力,以利计算时查用。
A mixed method is used to calculate the internal forces of the crossed beam system grids and open-web grids.It applies to analysis of the internal forces for the two-way rectangular grid,two- way diagonal grid,three-way grid and the open-web grid structure in any boundary condition.It is simple and easy in working out the solution for all kinds of grids.This paper also presents the moment- dividing coefficients of beams with regard to the shearing displacement, the rod-end moments and the shears of some elementary beams having nod displacement or bearing loads for consulting in calculating.
关键词
混合法
交叉梁
平板网架
空腹网架
mixed method
displacement method
moment-dividing method
shearing displacement
