This study numerically investigates flexural behavior of press braked U-type section girders for fabrication simplicity. In order to improve structural stability during construction, the top flanges of press braked U section girder are laterally braced by installation of precast half-deck. Thus, laterally unbraced length is taken by the pocket spacing of the half-deck. This study performed 3D nonlinear finite element analyses on the U-type section girders along with inner bend radii to thickness ratio (ri/t). The numerical models reflect initial imperfection and residual stress. Through the finite element analyses, the flexural strength of the press-braked U-type section models were compared with those of general welded girder.

ABSTRACT
 1. 서 론
 2. 이론적 배경
 3. 해석모델
 4. 재료특성 및 초기변형
 5. 해석결과
 6. 결론
 References

• 김정원(한밭대학교 토목공학과) | Kim Jung-Won
• 오정균(한밭대학교 건설환경공학과) | O Jeong-Gyun
• 김민호(한밭대학교 건설환경공학과) | Kim Min-Ho
• 최병호(한밭대학교 건설환경공학과) | Choi Byung-Ho