| Title |
An Experimental Study on Buckling Strength of Single Curvature Stainless Steel Circular Hollow Section Beam-Columns Subjected to Axial Force and Asymmetrical End-Moment |
| Authors |
Jang Ho-Ju ; Ryu Ki-Pyo ; Park Jae-Seon ; Yang Young-Sung |
| Keywords |
Stainless Steel Circular Hollow Section ; Axial Force ; the Asymmetrical End Moment ; a Single Curvature ; Slenderness Ratio ; Magnitude of Eccentricity ; Axial Force-moment(P-M) Interaction Curves ; Stub Column |
| Abstract |
This study presents a series of experimental investigations on buckling strength of eccentrically compressed cold-formed stainless steel CHS(circular hollow section) columns. The principal parameters in this study are slenderness ratios(Lk/r = 30, 50, 70) and magnitude of eccentricity e(one way : 0, 25, 50, 75, 100mm, the other way : 0, 12.5, 25, 37.5, 50mm) for single-curvature asymmetrical end moment. Objectives of this study are to obtain the maximum loads by performing an experimental work and to compare the experimental behaviors with analytical results. The ultimate buckling strength of CHS members is evaluated by a numerical method for axial force-bending moment(P-M) interaction curves. The behavior of each specimen is displayed in the form of strength-displacement and moment-angle(M-θ) relationship. The numerically obtained ultimate buckling interaction curves of beam-columns show a reasonably good agreement with the available experimental results for slenderness ratio 30. But experimental results for slenderness rations 50, 70 were below M-P interaction curve. |