| Title |
An Experimental Study on the Buckling Strength of Subject to Axial Force and Symmetrical End-Moment Stainless Steel Square Circular Hollow Columns |
| Authors |
Jang Ho-Ju ; Seo Seong-Yeon ; Yang Young-Sung |
| Keywords |
stainless steel circular hollow section ; eccentrically compression ; slenderness ratio ; magnitude of eccentricity ; axial force-moment(P-M) interaction |
| Abstract |
This study is a series of experimental investigation on the buckling strengths 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(0, 2.5, 5.0, 7.5, 10㎝) on the symmetrical end moment. Objectives 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 in accordance with the axial force-bending moment(P-M) interaction curves. The behavior of each specimen is displayed in the form of 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(Lk/r = 30, 50). But experimental results of slenderness ratios 70 were below M-P interaction curve. |