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Title |
Numerical Study on Columns Subjected to Blast Load Considering Compressive Behavior of Steel Fiber Reinforced Concrete
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Authors |
김재민(Jae-Min Kim) ; 이상훈(Sang-Hoon Lee) ; 김재현(Jae Hyun Kim) ; 김강수(Kang Su Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2023.27.5.105 |
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Keywords |
강섬유보강콘크리트; 수치해석; LS-DYNA; K&C 모델; 폭발하중 Steel fiber-reinforced concrete; Numerical analysis; LS-DYNA; K&C model; Blast load |
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Abstract |
Steel fiber reinforced concrete (SFRC) exhibits enhanced strength and superior energy dissipation capacity compared to normal concrete, and it can also reduce crack propagation and fragmentation of concrete even when subjected to blast loads. In this study, the parameters defining failure surface and damage function of the K&C concrete nonlinear model were proposed to be applied for the properties of SFRC in LS-DYNA. Single element analysis has been conducted to validate the proposed parameters in the K&C model, which provided very close simulations on the compressive behavior of SFRC. In addition, blast analysis was performed on SFRC columns with different volume fractions of steel fibers, and the blast resistance of SFRC columns was quantitatively analyzed with Korea Occupational Safety & Health Agency (KOSHA) guidelines.
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