钢筋混凝土框架结构优化设计

就钢筋混凝土框架的优化设计进行了深入的探讨。为便于工程设计者易于接受优化的概念，使用方便，在研究中选择了优化设计的准则迭代法。在优化软件的研制中使输入数据尽量少，让程序自动形成结构的有关数据库，并进行荷载的组合，按照国家现行设计规范进行优化设计。在优化过程中，分别选择了梁的截面高度和柱的截面宽度作为设计变量，经迭代收敛后，给出各种构件的截面优化尺寸和相应的配筋量。文中给出了框架的优化设计软件。经工程实例的考核证明，优化设计的框架比原设计方案节省造价30％以上。

The Optimum Design of the Frame of RC

As the optimum design of the frame of RC is studied,in order to make the conception of optimization accepted easily and used expediently,the standard iterative method is selected during the research.To reduce the data of input at most,the database related to frame are created automatically as well as the combination of loads,and besides,the development of the software of optimization must be strictly in accordance with the criterions in use in China.During the optimization, the height of beam and the width of column are selected as the parameters in design. After having iteratived some times till convergence,the size and amount of steel of every structural unit are supplied.At last there is the program of optimum design of the frame of RC.Proved by many engineering examples,the frame after optimization design is 30% on cost more economical than the one original designed.