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Title |
Failure Analysis for Steel Fiber?Reinforced Concrete Slab Subjected to Punching Shear
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DOI |
https://doi.org/10.4334/JKCI.2025.37.4.499 |
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Keywords |
강섬유보강 콘크리트; 펀칭 전단; 섬유 배향성; 손상-소성모델; 벤치마크 해석 steel fiber?reinforced concrete; punching shear; fiber orientation; damaged plasticity; benchmark |
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Abstract |
A square concrete slab measuring 2,550 mm in length and 180 mm in thickness was modeled using three-dimensional solid elements, incorporating both conventional reinforcement bars and hooked-end steel fiber inclusions. To accurately represent the composite behavior of steel fiber?reinforced concrete (SFRC), explicit fiber modeling was adopted on the basis of homogenized concrete. The nonlinear behavior of the concrete was captured using a damaged plasticity model. A punching shear load was applied vertically upward at the center of the slab and increased incrementally until radial cracking led to failure in the simulation. To account for the inherent variability of punching shear behavior and to explore potential enhancements in ductility, the shear resistance performance of the SFRC slab was evaluated under varying fiber orientations and aspect ratios.
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