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Title |
Improving the Strength Criterion for Steel Fiber Reinforced Concrete under Triaxial Stress based on Material Characteristics
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Authors |
오채연(Che-Youn Oho) ; 이문석(Moon-Seok Lee) ; 손동희(Dong-Hee Son) ; 최창식(Chang-Sik Choi) ; 배백일(Baek-Il Bae) |
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DOI |
https://doi.org/10.4334/JKCI.2026.38.4.481 |
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Keywords |
강섬유 보강 콘크리트; 삼축 응력 실험; 강도 기준; 자오선 평면; 편향 응력 평면 steel fiber reinforced concrete; triaxial stress test; strength criterion; meridian plane; deviatoric plane |
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Abstract |
For accurate predictions of the triaxial failure of steel-fiber-reinforced concrete (SFRC), this study proposes an improved Lubliner-Ottosen strength criterion (LOSC) that accounts for the strength improvement and bridging effects of steel fibers. The Ottosen parameter x, y, and correction factor ? were derived through triaxial stress tests, enabling the proposed model to accurately capture the failure surface expansion on both the meridian and deviatoric planes. This refined framework demonstrates high correlations with experimental data, providing a robust solution for the precise nonlinear analyses of SFRC structures.
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