In this study, elastic flange local buckling strength of doubly symmetric I-girder subjected to bending moment were evaluated by 3D finite element analysis. The analysis model were modeled by 3D shell elements(S4R) using ABAQUS 6.13 program. And loading and boundary conditions were determined by equal end moments and simple boundary conditions. Flange and web slenderness ratio were considered in the parametric studies to evaluate flange local buckling strength with AISC design equations. Then, AISC design equations and characteristics of Elastic flange local buckling of I-girder were evaluated.

ABSTRACT
 1. 서 론
 2. 유한요소해석
  2.1 해석 개요
  2.2 매개변수 연구
  2.3 해석 결과
 3. 결 론
 References

• 이정화(고려대학교 건축사회환경공학부) | Lee Jeong-Hwa
• 이기세(고려대학교 초대형구조기술연구소) | Kim Kee-Sei
• 변남주(초대형구조기술연구소 연구교수) | Byun Nam-Joo
• 강영종(고려대학교 건축사회환경공학부) | Kang Young-Jong