Experimental study of slender concrete-filled elliptical hollow section beam-columns

摘要: Experiments on concrete-filled elliptical hollow section beam-columns have been conducted to examine their fundamental structural behaviour. A total of 27 specimens were tested — 3 stub columns and 24 longer members varying slenderness. Seven the also contained steel reinforcement. The loaded in compression, either concentrically or with different major minor axis eccentricities. Measurements applied load, strains at mid-height, axial displacement lateral deflection mid-height recorded. Plots load against are presented for specimens, along values strength index ductility index. Comparisons made between test results provisions European Standard EN 1994-1-1:2004 determining ultimate circular rectangular columns. It was found that predicted resistances safe use design without reinforcement, eccentrically.