焊接组合双轴对称工字形截面翼缘改变单跨简支梁优化设计程序

The procedure of optimal design for the flang varied the single span simple beam with built-up welded double-axes.and symmetric H-shaped section

钢梁设计时，对于粱型选择、梁的截面尺寸拟定等需多次的反复试算‘这样不但工作量大而且往往不易求得最优解，着采用优化程序设计则可芍省大量的宝贵时间和精力，并且使设计更准确经济合理节约钢材。本程序是根据焊接组合双轴对称工字形截面翼缘改变单跨简支梁按照《钢结构设计规范》（ＧＢＪ１７－８８）概率极限状态方法和采用ＢＡＳＩＣ语言编写，在ＡＰＰＬＥ－Ⅱ机和ＩＢＭ－ＰＣ机或ＰＣ－１６００机以及苹果机上均可实现。

In the design process of steel beam.we must do much work over andagain such as choosing the type of beam.drafting the size of the steel beamcross section. So not only a great a mount of calculation have to bo reformed. but also the optimal solution. may not often be obtained.If the procedure ofoptimal design would be employed.a lot of time and our vigour could be savedand the design could be made exact.economic. rational and a large amountof steels may be saved.This procedure is edited for the optimal design of thewelded one- span built-up beam with simply supported ends which is doubleaxes symmetric H- section with variable flange.The procedure is based on theProbability Limit Method in Design Standard of Steel Structure(GB17-88).It iswritten by BASIC Ianguage and can be executed in APPLE-Ⅱ,IBM- PC.PC-1500 or APPLE micro computers.