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http://dx.doi.org/10.11112/jksmi.2013.17.3.001

Analytical Evaluation of High Velocity Impact Resistance of Two-way RC Slab Reinforced with Steel Fiber and FRP Sheet  

Lee, Jin Young (고려대학교 건축사회환경공학부)
Shin, Hyen Oh (고려대학교 건축사회환경공학부)
Min, Kyeng Hwan (고려대학교 방재과학기술연구소)
Yoon, Young Soo (고려대학교 건축사회환경공학부)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.17, no.3, 2013 , pp. 1-9 More about this Journal
Abstract
This paper presents high-velocity impact analysis of two-way RC slabs, including steel fibers and strengthening with fiber reinforced polymer (FRP) sheets for evaluating impact resistance. The analysis uses the LS-DYNA program, which is advanced in impact analysis. The present analysis was performed similarly to the high-velocity impact tests conducted by VTT, the technical research center of Finland, to verify the analysis results. High-velocity impact loads were applied to $2100{\times}2100{\times}250$ mm size two-way RC slab specimens, using a non-deformable steel projectile of 47.5kg mass and 134.9m/s velocity. In this research, extra impact analysis of material specimens was carried out to verify the material models used to the analysis. The elastic-plastic hydrodynamic model, concrete damage model and orthotropic elastic model were used to simulate the non-linear softening behavior of steel fiber reinforced concrete (SFRC), and material properties of normal concrete and FRP sheets, respectively. It is concluded that the suggested analysis technique has good reliability, and can be effectively applied in evaluating the effectiveness of reinforcing/retrofitting materials and techniques. Also, the Steel fiber and FRP sheet strengthening systems provided outstanding performance under high-velocity impact loads.
Keywords
High-Velocity impact loads; Steel Fiber Reinforced Concrete (SFRC); FRP sheets; LS-DYNA;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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1 Lee, J. Y., Kim, M. H., Min, K. H., Yoon, Y. S., "Analysis of Behaviors of Concrete Strengthened with FRP Sheets and Steel Fibers under Low-Velocity Impact Loading", Journal of the Korea Institute for Structural Maintenance Inspection, vol. 15, No. 4, 2011, pp.155-164. (in Korean)   과학기술학회마을
2 Zhou, X. Q. and Hao, H., "Modelling of Compressive Behaviour of Concrete-Like Materials at High Strain Rate", International Journal of Solids and Structure, vol. 45, No. 17, 2008, pp.4648-4661.   DOI   ScienceOn
3 Al-Hassani, S. T. S. and Kaddour, A. S., "Strain Rate Effect on GRP, KRP and CFRP Composite Laminates", Key Engineering Materials, vol. 141-143, No. 2, 1998, pp.427-452.   DOI
4 Ari Vepsa, "Experimental tests for bending and punching behaviour of reinforced concrete walls under impact loading", VTT-R-05587-10 VTT, Finland, 2010, pp.1-158.
5 Chen, C. C. and Li, C. Y., "Punching Shear Strength of Reinforced Concrete Slabs Strengthened with Glass Fiber Reinforced Polymer Laminates", ACI Structural Journal, vol. 102, No. 4, 2005, pp.535-542.
6 Hallquist, J. O., LS-DYNA Theoretical Manual. Livermore Software Technology Corporation, 2006, pp.1-18.
7 Kim, H. J., Nam, J. W., Kim, S. B., Kim, J. H., Byun, K. J., "Analytical Evaluations of the Retrofit Performances of Concrete Wall Structures Subjected to Blast Load", Journal of Korea Concrete Institute, vol. 19, No. 2, 2007, pp.241-250. (in Korean)   과학기술학회마을   DOI   ScienceOn
8 Kim, M. H., Min K. H., Yoo, D. Y., Yoon, Y. S., "Strengthening Effect of CFRP Sheets and Steel Fibers for Enhancing the Impact Resistance of RC Beams", Journal of The Korean Society of Hazard Mitigation, vol. 11, No. 5, 2011, pp.41-47. (in Korean)   과학기술학회마을
9 Livermore Software Technology Corporation (LSTC), LS-DYNA Keyword User's Manual Version971. Livermore Software Technology Corporation, 2007, pp.1447-1451.
10 Magallanes, J. M., Wu, Y. and Malvar, L. J., "Recent Improvements to Release III of the K&C Concrete Model", 11th International LS-DYNA Users Conference, Michigan (USA), 2010, pp.3-37.
11 Malvar, L. J. and Grwford, J. E., "Dynamic Increase Factors for Concrete", 28th DDESB Seminar. Orlando (USA), 1998, pp.1-18.
12 Min K. H., Shin, H. O., Yoo, D. Y., Yoon, Y. S., "Flexural and Punching Behaviors of Concrete Strengthening with FRP Sheets and Steel Fibers under Low-Velocity Impact Loading", Journal of Korea Concrete Institute, vol. 23, No. 1, 2011, pp.31-38. (in Korean)   과학기술학회마을   DOI   ScienceOn
13 Teng, T. L., Chu, Y. A., Chang, F. A., Shen, B. C. and Cheng, D. S., "Development and validation of numerical model of steel fiber reinforced concrete for high-velocity impact", Computational Materials Science, vol. 42, No. 1, 2008, pp.90-99.   DOI   ScienceOn
14 Schwer, L. E. and Malvar, L. J., "Simplified Concrete Modeling with MAT_CONCRET_DAMAGE_MODEL_REL 3", JRI LS-DYNA user week, Nagoya (Japan), 2005, pp.1-14.
15 Tavarez, F. A., Bank, L. C. and Plesha M. E., "Analysis of Fiber-Reinforced Polymer Composite Grid Reinforced Concrete Beam", ACI Structural Journal, vol. 100, No. 2, 2003, pp.250-258.