In this paper, it is covered in detail the process of generating structural alternatives with geometry change and its optimization by StrAuto. The main roof structure of the Exhibition Center is modelled parametrically and the optimal alt is derived by observing volume changes according to geometry change of main roof truss. Existing studies performed optimization process through sections and properties due to the limitations of shape change, but this study have meaning of performing the optimization with geometry changes which is the most critical skills of StrAuto. By the process of securing a sufficient margin by geometry changes and reducing volume with the optimization of sections, despite of a partial optimization of large space structure, it could be reduced by 11.7% of the total volume.

• 최현철(가천대학교 건축학과) | Hyunchul Choi (Dept. of Architecture, Gachon Univ., Seongnam, 13120, Korea)
• 이시은(백석대학교 정보통신학부) | Si Eun Lee (Division of Information & Communication Baekseok Univ., Cheonan, 31065, Korea)
• 김치경(단국대학교 건축공학과) | Chee Kyeong Kim (Dept. of Architectural Engineering, Dankook Univ., Yongin, 31116, Korea) Corresponding author