Conventional analysis and design of steel structures are performed using the assumption of a either fully rigid or pinned. However, every steel connection lies in between fully rigid and pinned connection. So, It is important to consider the connection for steel structure design. In this paper Computer-based second-order elastic analysis is used to calculate one story two bay and two story three bay for steel structures with semi-rigid connection. Genetic Algorithms(GAs) and Sequential Unconstrained Minized Technique(SUMT) dynamic programming is used to the method for optimum design of steel structures. The efficiency and validity of the developed continuous and discrete optimum design algorithm was verified by applying the algorithm to optimum design examples.

• 구본율(경북대학교 건축공학과 박사과정) | Gu, Bon-Ryul
• 박춘욱( 영진전문대학 건축계열 전임강사, 공학박사) | 박춘욱
• 강성원( (주) 본구조 엔지니어링, 공학석사) | 강성원
• 강문명( 경북대학교 건축공학과 교수, 공학박사) | 강문명