Flexural Strength of Steel-Concrete Composite Beams Under Two-Point Loading

Abstract

This study investigates the flexural strength of simply-supported steel–concrete composite beams under two-point loading. A total of four specimens were tested to failure for varying parameters including type of connectors (stud and channel) and number of connectors (two and four). ANSYS software was used to establish the finite element models that can simulate the flexural behaviour of the composite beam. The test results show that a beam with channel connectors performs better than a beam with stud connectors. The composite beam with two connectors between the beam and slab causes additional deflection due to slippage in the connectors, when compared to the beam with four connectors. The results from the analytical model are in good agreement with the experimental results.

Study on the Flexural Behavior of Steel-Concrete Composite Beams Based on the Shear Performance of Headed Stud Connectors

“…Reducing shear connectors decreased the composite beams' initial stiffness and bearing capacity and increased the relative slip in the interfaces. Using composite beam tests and finite element analyses, Sangeetha et al [19] showed that the composite beams arranged with fewer connectors had greater deflection and slip. Ding et al [20] investigated the shear performance of steel-concrete composite beams connected with studs through finite element numerical analyses based on steel-concrete composite beam tests, derived the bounded shear-to-span ratios of the composite beams subjected to bending damage or bending-shear damage, and proposed a formula for calculating the shear strength of the composite beams.…”