세장판요소를 갖는 스테인리스강 각형강관 압축재의 좌굴내력에 관한 실험적 연구

초록

In this study, experiments of austenitic stainless steel (STS304 TKC) SHS(square hollow section) compression member under concentric axial loading were conducted to investigate buckling strength. Specimens are composed of slender section with large width-to-thickness ratio and same plate thickness. Main parameters are column length and width. Most of specimens except one with 50 mm width and 2,000 mm length and global buckling failed by local buckling. Yield strength obtained from compressive material tests of stub column got lower by 34 % than that of tensile coupon test results. The test buckling strengths were compared with those predicted by current stainless steel design specifications (American Society of Civil Engineers [ASCE] and Eurocode [EC3]) for stainless steel compressive members, American Iron and Steel Institute (AISI) code for carbon steel. It is known that design strengths with tensile material test data were close to test buckling strengths.

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