Experimental studies on prestressed steel-concrete composite beams with various types of innovative webs have been conducted to improve prestress efficiency and composite action. These researches observed that the efficiency of prestress introduced into the flanges of composite beams with corrugated webs or discontinuous webs significantly increased due to accordion effect. In this study, nonlinear finite element analysis has been performed to evaluate the local behavior of specimens that are very difficult or sometimes impossible to observe. A suitable modeling method for PS composite beam has been developed, which can consider the loading stages along construction sequences and the interface interaction between different materials such as concrete and steel. The analysis results have been compared to test results for verification.

• 오재열(서울시립대학교 박사과정) | Oh, Jae Yuel
• 이득행(서울시립대학교 박사과정) | Lee, Deuck Hang
• 주현진(서울시립대학교 박사과정) | Ju, Hyun Jin
• 김강수(서울시립대학교 교수, 공박) | Kim, Kang Su Corresponding Author
• 이성태(인하공업전문대학, 교수, 공박) | Yi, Sung Tae