Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Automatic Design of Steel Frame Using Nonlinear Analysis

비선형 해석을 이용한 강뼈대구조물의 자동화설계

  • 김창성 (세종대학교 토목환경공학과/건설기술연구소) ;
  • 마상수 (세종대학교 토목환경공학과/건설기술연구소) ;
  • 최세휴 (건설기술연구소) ;
  • 김승억 (세종대학교 토목환경공학과/건설기술연구소)
  • Received : 2001.12.20
  • Published : 2002.04.27
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Abstract

The study developed an automatic design method of steel frames which uses nonlinear analysis. The geometric nonlinearity was considered using stability functions. Likewise, the transverse shear deformation effect in a beam-column was explained. A direct search method was used as an automatic design technique. The unit value of each part was evaluated using LRFD interaction equation. The member with the largest unit value was replaced one by one with an adjacent larger member selected from the database. The weight of the steel frame was considered as an objective function. On the other hand, load-carrying capacities, deflections, inter-story drifts, and ductility requirement were used as constraint functions. Case studies of a two-dimensional and a three-dimensional two-story frames were presented.

본 논문에서는 비선형 해석을 이용한 강뼈대 구조물의 자동화설계를 수행한다. 기하학적 비선형은 안정함수를 사용하여 고려한다. 보-기둥 부재에 대하여 전단변형 효과를 고려한다. 자동화 설계 기법으로는 직접 탐색법을 사용한다. LRFD의 상관방정식으로 각각의 부재의 상관 계수 값을 계산하여 가장 큰 상관 계수 값을 가지는 부재의 크기를 데이터베이스에서 단계별로 증가시킨다. 목적함수는 강뼈대 구조물의 중량을 사용하며, 계약조건식은 하중-저항능력, 처짐, 층간 수평변위 및 연성도를 고려한다. 2차원과 3차원 2층 강뼈대구조물에 대한 예제 해석을 수행한다.

Keywords

Acknowledgement

Supported by : 과학기술부

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