Abstract
This paper is theoretical and experimental studies for the shearing strength in steel tubular connections filled with concrete. On the theoretical study, we simplify beam-to-column connections to untisymmetrical cantilevers and discuss bending of a steel tubular cantilever filled with concrete by a force applied at the virtual free end of it in the same manner as Part I. In the analysis of this problem, we apply Saint-Venant's flexure theory both a steel tubular cantilever and a concrete cantilever in the steel tubular, assuming those possess a property of elasticity. After we find elastic deformations of the free ends, we consider these are equal. Then, the formula for the shearing strength of connections subjected to moment and shear is obtained from equation (4.7). In the experiment, four cruciform specimens are tested. They consist of steel tubular columns and H-section beams. Columns of three specimens are filled with concrete, and the other one is not. In consequence of experimental research, theoretical yield loads of connections approximate experimental them.
