Shear-slip failure in steel-concrete-steel composite beams with bidirectional webs

摘要

Steel-concrete-steel composite structures with bidirectional thin-walled webs (SCSBWs) are used to build largescale structures. The presence of steel webs causes notable differences in shear behavior compared to other types of steel-concrete-steel (SCS) composite structures. In this paper, the shear-slip behavior of SCSBWs is studied through experiments and numerical simulations. Particularly, the numerical simulations cover a wide range of variations in the structural parameters to explore the effect of each parameter on the shear- slip behavior. A theoretical model to describe shear-slip in SCSBWs is proposed chiefly by introducing a slip reduction factor. The experimental and numerical data verified the proposed model, which also demonstrated acceptable accuracy and efficiency.