Fatigue parameter index analysis of steel-concrete composite beams

Steel-concrete composite beams can give full play to the material properties of concrete and steel, and have been widely used in bridge structures. The two are connected by shear joints, so that the two materials form a single unit, allowing the composite beam to make full use of the advantages of both. In this paper, a fatigue analysis model is established to analyze the fatigue parameters of steel-cement composite beams. From the results of the analysis, it can be seen that the initial maximum value of shear force is assumed by the studs at the beam ends at the intersection of the composite beam, and then decreases non-linearly with fatigue loading, and vice versa for the studs near the middle of the span.