부산대학교 도서관

In this study, a steel-concrete composite slim floor system with variable steel cross-sections was proposed to efficiently use the structural member. An experimental study was conducted with hollow-core and shear connectors as key variables to identify the structural performance of flexure and shear. The specimens showed structural performances under negative moment and shear force higher than the nominal strengths, but lower positive moment strength than the nominal strength since the bond capacity between steel and concrete was not sufficient to have full composite behavior. In particular, in the case of a member in which the shear connector was not placed, the loss of bond between the steel and the concrete led to a drastic decrease in performance. Therefore, it is suggested that sufficient horizontal shear capacity between two different materials should be guaranteed to have sufficient structural performance of the steel-concrete composite slim floor system.