| Title |
An Experimental Study on the Buckling Strength of Subject to Axial Force and Asymmetrical End-Moment a Single Curvature Stainless Steel Rectangular Hollow Section Beam-Columns |
| Authors |
Jang Ho-Ju ; Ryu Ki-Pyo ; Park Jae-Seon ; Yang Young-Sung |
| Keywords |
Stainless Steel Rectangular Hollow Section ; Axial Force ; the Asymmetrical End-moment ; a Single Curvature ; Slenderness Ratio ; Magnitude of Eccentricity ; Moment-axial Force(M-P) Interaction Curves |
| Abstract |
This study is a series of experimental investigation on the buckling strengths of eccentrically compressed cold-formed stainless steel rectangular hollow section beam-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, 100㎜, the other way : 0, 12.5, 25, 37.5, 50㎜) on the asymmetrical end-moment of a single curvature. Objectives of this paper 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 square section members are evaluated by a numerical method in accordance with the bending moment-axial force(M-P) interaction curves. The behavior of each specimen is displayed in the form 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 of slenderness ratios 30 and 50. But experimental results of slenderness ratios 70(e/k=0, 1.5) were below M-P interaction curve. |