When the prestress is introduced to a typical steel beam with wide flanges, the introduction efficiency of prestress is significantly low due to its large axial stiffness. In this study, the steel beam with discontinuous webs is developed to improve the efficiency of prestress introduced into top and bottom flanges by utilizing the accordion effect. The experiment and FE analysis are performed to verify the introduction efficiency of the prestress on the steel beam with discontinuous webs.

• 오재열(서울시립대학교 건축공학과, 박사과정) | Oh, Jae Yuel
• 이득행(서울시립대학교 건축공학과, 박사과정) | Lee, Deuck Hang
• 강현(서울시립대학교 건축공학과, 박사과정) | Kang, Hyun
• 김강수(서울시립대학교 건축학부, 교수) | Kim, Kang Su
• 이성태(인하공업전문대학 토목환경과, 교수) | Yi, Seong Tae