Flexural strength for engative bending and vertical shear struength of composite steel slag-concrete beams

摘要

This paper is part of a summary on a series of tests and studies of 6 simply supported and 12 continuous composite steel slag-concrete beams.Using simple plastic theory and conversion of the steel member cross-section shape from "I" to rectangle,calculation formula of flexural strength of continuous composite beams for negative bending is obtained and this formula can provide accurate results no matter the cross-section neutral axis of the composite beam lies in the web or in the top flange of the steel member.main factors affecting the strength of composite beams for vertical shear such as concrete slab,nominal shear span-ratio and force ratio.are discussed in this paper.It is necessary considering the effect of the concrete slab when calculating the strength of composite beams for vertical shear.Bending moment-ratio shold be considered for continuous composite beams.