EXPERIMENTAL STUDY ON BEHAVIOR OF RECTANGLE CFT STUB COLUMN WITH BINDING BARS SUBJECTED TO AXIALLY LOADING
2007
A test on eight specimens of rectangle concrete-filled steel tubular(R-CFT) stub columns,including one specimen without binding bars and seven specimens with binding bars,is carried out,aiming at axially-loaded behavior of R-CFT influenced by binding bars.The primary study parameters are diameter and space of binding bar,width-thickness ratio of steel tube and length-width ratio of specimen cross-section.It is shown that the binding bars do enhance ductility and deformability of R-CFT,though not contributing to the ultimate bearing capacity of R-CFT.Finally,a comparison between the ultimate bearing capacity,calculated by the current methods at home and that of EC4(1996) respectively,and the counterpart of experiment results is conducted,which shows that the results of calculation are conservative.
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