【摘要】 以门式刚架结构用钢最少为目标函数，进行满足结构设计规范要求的最优化设计．这种优化设计能够降低结构成本．比传统设计方法效果更好更多还原

【Abstract】 Adopts optimal technique to design portal frame under vertical and horizontal load. The desi- gen uses the least amount of steel to satisfy engineering requirement. To compare the results of optimum design with result of traditional design method,the former can areduce the cost of production more.更多还原