Experimental investigation on the structural performance of a reinforced CFS beam-column joint

A reinforced beam-column joint specific to mid-rise cold-formed steel (CFS) dwellings was proposed and studied by six full-scale cyclic loading tests. Afterwards, a moment-rotation relationship prediction model and a numerical model of the joint were established. The results show that: (1) the joint has a certain bending moment transmission capacity; (2) the joint's moment-rotation curve has distinctive three-stage deformation characteristics, including elastic, nonlinear and failure stages successively; the structural performance of the joint is better and more in line with the requirements of mid-rise CFS dwellings than conventional joint; (3) the elastic buckling strength of beam flange can be taken as the elastic limit of the joint, and the ultimate bending moment of the joint is determined by elastic flexural capacity of beam section; (4) the prediction model and the numerical model can be used to establish an overall model of mid-rise CFS dwelling with consideration of jointsâ nonlinear behaviour.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author