Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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EVALUATION OF SEISMIC SHEAR CAPACITY OF PRESTRESSED CONCRETE CONTAINMENT VESSELS WITH FIBER REINFORCEMENT

  • CHOUN, YOUNG-SUN (Integrated Safety Assessment Division, Korea Atomic Energy Research Institute) ;
  • PARK, JUNHEE (Integrated Safety Assessment Division, Korea Atomic Energy Research Institute)
  • Received : 2015.03.24
  • Accepted : 2015.06.03
  • Published : 2015.12.25
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Abstract

Background: Fibers have been used in cement mixture to improve its toughness, ductility, and tensile strength, and to enhance the cracking and deformation characteristics of concrete structural members. The addition of fibers into conventional reinforced concrete can enhance the structural and functional performances of safety-related concrete structures in nuclear power plants. Methods: The effects of steel and polyamide fibers on the shear resisting capacity of a prestressed concrete containment vessel (PCCV) were investigated in this study. For a comparative evaluation between the shear performances of structural walls constructed with conventional concrete, steel fiber reinforced concrete, and polyamide fiber reinforced concrete, cyclic tests for wall specimens were conducted and hysteretic models were derived. Results: The shear resisting capacity of a PCCV constructed with fiber reinforced concrete can be improved considerably. When steel fiber reinforced concrete contains hooked steel fibers in a volume fraction of 1.0%, the maximum lateral displacement of a PCCV can be improved by > 50%, in comparison with that of a conventional PCCV. When polyamide fiber reinforced concrete contains polyamide fibers in a volume fraction of 1.5%, the maximum lateral displacement of a PCCV can be enhanced by ~40%. In particular, the energy dissipation capacity in a fiber reinforced PCCV can be enhanced by > 200%. Conclusion: The addition of fibers into conventional concrete increases the ductility and energy dissipation of wall structures significantly. Fibers can be effectively used to improve the structural performance of a PCCV subjected to strong ground motions. Steel fibers are more effective in enhancing the shear performance of a PCCV than polyamide fibers.

Keywords

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

References

  1. J.P. Laible, R.N. White, P. Gergely, Experimental investigation of seismic shear transfer across cracks in concrete nuclear containment vessels, ACI Spec. Publ. SP 53-9 (1977) 203-226.
  2. R.N. White, P. Gergely, J.P. Laible, O.A. Fajardo, Seismic shear transfer across cracks in concrete nuclear reactor containment vessels, in: Proceedings of the Fifth World Conference on Earthquake Engineering, June 25-29, 1973. Rome, Italy.
  3. R. Narayanan, I.Y.S. Darwish, Use of steel fibers as shear reinforcement, ACI Struct. J. 84 (1987) 216-227.
  4. V.C. Li, R. Ward, A.M. Hamza, Steel and synthetic fibers as shear reinforcement, ACI Mater. J. 89 (1992) 499-508.
  5. M. Valle, O. Buyukozturk, Behavior of fiber reinforced highstrength concrete under direct shear, ACI Mater. J. 90 (1993) 122-133.
  6. J. Susetyo, P. Gauvreau, F.J. Vecchio, Effectiveness of steel fiber as minimum shear reinforcement, ACI Struct. J. 108 (2011) 488-496.
  7. G.J. Parra-Montesinos, P. Chompreda, Deformation capacity and shear strength of fiber-reinforced cement composite flexural members subjected to displacement reversals, J. Struct. Eng. 133 (2007) 421-431. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:3(421)
  8. G.J. Parra-Montesinos, B.A. Canbolat, K.Y. Kim, Fiber reinforced cement composites for seismic resistant elements with shear-dominated behavior, in: Proceedings of the 6th RILEM Symposium on Fibre-Reinforced Concretes (FRC)-BEFIB 2004, 2004, pp. 1237-1246. Varenna, Italy.
  9. B.A. Canbolat, G.J. Parra-Montesinos, J.K. Wight, Experimental study on seismic behavior of highperformance fiber-reinforced cement composite coupling beams, ACI Struct. J. 102 (2005) 159-166.
  10. J. Michels, R. Christen, D. Waldmann, Experimental and numerical investigation on postcracking behavior of steel fiber reinforced concrete, Eng. Fract. Mech. 98 (2013) 326-349. https://doi.org/10.1016/j.engfracmech.2012.11.004
  11. G.J. Parra-Montesinos, K.Y. Kim, Seismic behavior of low-rise walls constructed with strain-hardening fiber reinforced cement composites, in: Proceedings of the Thirteenth World Conference on Earthquake Engineering, August 1-6, 2004. Vancouver, Canada.
  12. J. Carrillo, S.M. Alcocer, J.A. Pincheira, Shaking table tests of steel fiber reinforced concrete walls for housing, in: Proceedings of the Fifteenth World Conference on Earthquake Engineering, September 24-28, 2012. Lisboa, Portugal.
  13. Y. Ogaki, M. Kobayashi, T. Takeda, T. Yamaguchi, S. Yoshizaki, S. Sugano, Shear strength tests of prestressed concrete containment vessels, in: Transactions of the Sixth International Conference on Structural Mechanics in Reactor Technology, August 17-21, 1981. J4/3, Paris, France.
  14. Y.S. Choun, I.K. Choi, M.K. Kim, J.M. Seo, S.M. Ahn, S.A. Seong, Development of Technology for Structural Integrity Evaluation, KAERI/RR-2720/2006, Korea Atomic Energy Research Institute, Republic of Korea, 2007 [In Korean].
  15. S. Mazzoni, F. McKenna, G.L. Fenves, Open System for Earthquake Engineering Simulation User Manual, Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2006.
  16. J.W. Reed, R.P. Kennedy, D.R. Buttemer, I.M. Idriss, D.P. Moore, T. Barr, K.D. Wooten, J.E. Smith, A Methodology for Assessment of Nuclear Power Plant Seismic Margin (Revision 1), EPRI NP-6041-SL, Electric Power Research Institute, California, 1991.
  17. American Society of Civil Engineers, Seismic Design Criteria for Structures, Systems, and Components in Nuclear Facilities, ASCE/SEI 43-05, American Society of Civil Engineers, Virginia, 2005.

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