| Title |
An Experimental Study on Buckling Strength of Stainless Steel Circular Hollow Section Columns Subjected to One way Concentric and the Other Way Eccentric Compressive Force |
| Authors |
Jang Ho-Ju ; Park Jae-Seon ; Yang Young-Sun |
| Keywords |
Stainless Steel Circular Hollow Section ; Compressed Axial Force ; the Asymmetrical End Moment ; Eccentricity ; Slenderness Ratio ; Magnitude of Eccentricity ; Axial Force-moment(P-M) Interaction Curves ; Moment-angle(M-θ) |
| Abstract |
This study presents a series of experimental investigations on buckling strength of one way concentric and the other way eccentric compressive 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(0, 25, 50, 75, 100㎜) 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 are 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 columns show a reasonably good agreement with the available experimental results for slenderness ratio 30, 50, 70. But experimental results for slenderness ratios 30(e/k=0) were below M-P interaction curve. |