Compressive Strength and Residual Stress Evaluation of Stub Columns Fabricated of High Strength Steel
고강도강재 단주의 압축강도 및 잔류응력 평가

Cheol-Ho Lee, Dae-Kyung Kim, Kyu-Hong Han, Jin-Ho Kim, Seung-Eun Lee, Tae-Hyu Ha
2012 Journal of Korean Society of Steel Construction  
ABSTRACT: In this study, stub columns subjected to concentrical and eccentrical loads were tested to check the applicability of the current local stability criteria (KBC2009, AISC2005) to 800MPa high-strength steel (HSA800). The key test variables in the concentrically loaded tests included the plate-edge restraints and the width-to-thickness ratio normalized by the yield strength of steel. Specimens made of ordinary steel (SM490) were also tested for comparative purposes. Eccentrically loaded
more » ... centrically loaded stub column tests were conducted for a range of the P-M combinations by controlling the loading eccentricity. All the concentrically loaded specimens with non-compact and slender sections developed sufficient strengths according to the current local stability criteria. All the eccentrically loaded specimens with non-compact H sections also exhibited a sufficient P-M interaction strength that was even higher than that of compact H-section counterparts. Residual stresses were also measured by using the non-destructive indentation method to demonstrate their dependency or independency on the steel material's yield strength. The measured results of this study also indicated that the magnitude of residual stresses bears no strong relation to the yield strength of the steel material. 핵 심 용 어 : 고강도강재, 국부좌굴, 단주 압축실험, 단면조밀성, 잔류응력
doi:10.7781/kjoss.2012.24.1.023 fatcat:cpmzwbepsfc4hjhabfsxzqn2li