In this study, structural analysis was performed for the trapezoidal steel box girders. The girder is assumed to be made not by welded but by folded. Because the girder has no welded connection, the material can show its full strength without residual stresses. In the nonlinear analysis, however, there should be difference between sharp-corner girder and rounded-corner girder. Therefore, the parametric study was performed due to the radius of fillet to estimate the shear buckling strength of the girders.

• 이기세(고려대학교 건축사회환경공학부 박사과정) | Lee, Kee Sei
• 장민서(고려대학교 건축사회환경공학부 석박통합과정) | Jang, Min Seo
• 조시영(고려대학교 건축사회환경공학부 석사과정) | Cho, Si Young
• 강영종(고려대학교 건축사회환경공학부 교수, 공학박사) | Kang, Young Jong