Computers and Concrete

  • 제23권3호
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  • Pages.217-233
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  • 2019
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
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DOI QR Code

Numerical investigation on punching shear of RC slabs exposed to fire

  • 투고 : 2018.09.12
  • 심사 : 2019.03.13
  • 발행 : 2019.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper describes the numerical modelling of an interior slab-column connection to investigate the punching shear resistance of reinforced concrete (RC) slabs under fire conditions. Parameters of the study were the fire direction, flexural reinforcement ratio, load levels, shear reinforcement and compressive strength of concrete. Moreover, the efficiency of the insulating material, gypsum, in reducing the heat transferred to the slab was assessed. Validation studies were conducted comparing the simulation results to experiments from the literature and common codes of practice. Temperature dependencies of both concrete and reinforcing steel bars were considered in thermo-mechanical analyses. Results showed that there is a slight difference in temperature endurance of various models with respect to concrete with different compressive strengths. It was also concluded that compared to a slab without gypsum, 10-mm and 20-mm thick gypsum reduce the maximum heat transferred to the slab by 45.8% and 70%, respectively. Finally, it was observed that increasing the flexural reinforcement ratio changes the failure mode from flexural punching to brittle punching in most cases.

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참고문헌

  1. ACI Committee 216.1-14 (2014), Guide for Determining the Fire Endurance of Concrete Elements, American Concrete Institute (ACI), Farmington Hills, Michigan.
  2. ACI Committee 363 (2010), Report on High-Strength Concrete (ACI 363R-10), American Concrete Institute (ACI), Farmington Hills, Michigan Adetif.
  3. Adetifa, B. and Polak, M.A. (2005), "Retrofit of slab column interior connections using shear bolts", ACI Struct. J., 102(2), 268.
  4. Aguado, J.V., Albero, V., Espinos, A., Hospitaler, A. and Romero, M.L. (2016), "A 3D finite element model for predicting the fire behavior of hollow-core slabs", Eng. Struct., 108, 12-27. https://doi.org/10.1016/j.engstruct.2015.11.008
  5. Annerel, E., Lu, L. and Taerwe, L. (2013), "Punching shear tests on flat concrete slabs exposed to fire", Fire Saf. J., 57, pp.83-95. https://doi.org/10.1016/j.firesaf.2012.10.013
  6. Annerel, E., Taerwe, L., Merci, B., Jansen, D., Bamonte, P. and Felicetti, R. (2013), "Thermo-mechanical analysis of an underground car park structure exposed to fire", Fire Saf. J., 57, 96-106. https://doi.org/10.1016/j.firesaf.2012.07.006
  7. Arna'ot, F.H., Abid, S.R., Ozakca, M. and Taysi, N. (2017), "Review of concrete flat plate-column assemblies under fire conditions", Fire Saf. J., 93, 39-52. https://doi.org/10.1016/j.firesaf.2017.07.004
  8. Aslani, F. and Bastami, M. (2011), "Constitutive relationships for normal-and high-strength concrete at elevated temperatures", Mater. J., 108(4), 355-364.
  9. Aslani, F., Nejadi, S. and Samali, B. (2014a), "Long-term flexural cracking control of reinforced self-compacting concrete one way slabs with and without fibres", Comput. Concrete, 14(4), 419-443. https://doi.org/10.12989/cac.2014.14.4.419
  10. Aslani, F., Nejadi, S. and Samali, B. (2015a), "Instantaneous and time-dependent flexural cracking models of reinforced selfcompacting concrete slabs with and without fibres", Comput. Concrete, 16(2), 223-243 https://doi.org/10.12989/cac.2015.16.2.223
  11. Aslani, F., Nejadi, S. and Samali, B. (2015c), "Instantaneous and time-dependent behaviour of reinforced self-compacting concrete slabs", Concrete Aust., 41(4), 52-59.
  12. Aslani, F. and Samali, B. (2015b), "Constitutive relationships for self-compacting concrete at elevated temperatures", Mater. Struct., 48(1-2), 337-356. https://doi.org/10.1617/s11527-013-0187-1
  13. Aslani, F. and Samali, B. (2014b), "Constitutive relationships for steel fibre reinforced concrete at elevated temperatures", Fire Technol., 50(5), 1249-1268. https://doi.org/10.1007/s10694-012-0322-5
  14. ASTM E119-12a (2012), Standard Test Methods for Fire Tests of Building Construction and Materials, American Society for Testing and Materials (ASTM), West Conshohocken, PA.
  15. ATENA (2016), Finite Element Software, ATENA Program Documentation, Theory and User Manual, Cervenka Consulting, Prague, Czech Republic.
  16. Bamonte, P., Felicetti, R. and Gambarova, P.G. (2009), "Punching shear in fire-damaged reinforced concrete slabs", ACI Spec. Publ., 265, 345-366.
  17. Bamonte, P., Fernandez Ruiz, M. and Muttoni, A. (2012), "Punching shear strength of R/C slabs subjected to fire", Proceedings of the 7th International Conference on Structures in Fire-SiF2012, Eds. M. Fontana, A. Frangi, and M. Knobloch.
  18. Bamonte, P. and Felicetti, R. (2009), "Fire scenario and structural behaviour of underground parking lots exposed to fire", Appl. Struct. Fire Eng., Prague.
  19. Babrauskas, V. (1993), "Structural fire protection: ASCE Manuals and Reports on Engineering Practice No. 78", Ed. T.T. Lie, American Society of Civil Engineers, New York, August.
  20. Bazant, Z.P. and Chern, J.C. (1987), "Stress-induced thermal and shrinkage strains in concrete", J. Eng. Mech., ASCE, 113(10), 1493-1511. https://doi.org/10.1061/(ASCE)0733-9399(1987)113:10(1493)
  21. Bompa, D.V. and Onet, T. (2016), "Punching shear strength of RC flat slabs at interior connections to columns", Mag. Concrete Res., 68(1), 24-42. https://doi.org/10.1680/macr.14.00402
  22. BS 8110-2 (1985), Structural Use of Concrete-Part 2: Code of Practice for Special Circumstances, British Standards Institution (BSI). London, UK.
  23. Carette, G.G., Painter, K.E. and Malhotra, V.M. (1982), "Sustained high temperature effect on concretes made With normal portland cement, normal portland cement and slag, or normal portland cement and fly ash", Concrete Int., 4(7), 16.
  24. Cather, B. (2003). Chapter 10: Concrete and Fire Exposure. In Advanced Concrete Technology: Concrete Properties, Vol. 2, Butterworth-Heinemann, Oxford, UK.
  25. Cervenka, V. (2013), "Reliability-based non-linear analysis according to fib Model Code 2010", Struct. Concrete, 14(1), 19-28. https://doi.org/10.1002/suco.201200022
  26. Chang, Y.F., Chen, Y.H., Sheu, M.S. and Yao, G.C. (2006), "Residual stress-strain relationship for concrete after exposure to high temperatures", Cement Concrete Res., 36, 1999-2005. https://doi.org/10.1016/j.cemconres.2006.05.029
  27. Chung, J.H., Consolazio, G.R.a nd McVay, M.C. (2006), "Finite element stress analysis of a reinforced high-strength concrete column in severe fires", Comput. Struct., 84(21), 1338-1352. https://doi.org/10.1016/j.compstruc.2006.03.007
  28. Custer, R.L.P. and Meacham, B.J. (2000), SFPE Engineering Guide to Performance Based Fire Protection Analysis and Design of Buildings, National Fire Protection Association, Society of Fire Protection Engineers, Bethesda, MD.
  29. Dwaikat, M.B. and Kodur, V.K.R. (2009), "Hydrothermal model for predicting fire-induced spalling in concrete structural systems", Fire Saf. J., 44(3), 425-434. https://doi.org/10.1016/j.firesaf.2008.09.001
  30. Dzolev, I.M. (2018), "Numerical analysis on the behaviour of reinforced concrete frame structures in fire", Comput. Concrete, 21(6), 637-647. https://doi.org/10.12989/CAC.2018.21.6.637
  31. ElMohandes, F. (2013), "Advanced three-dimensional nonlinear analysis of reinforced concrete structures subjected to fire and extreme loads", PhD Thesis, University of Toronto, Toronto, ON, Canada.
  32. ElMohandes, F. and Vecchio, F.J. (2016), "Reliability of temperature-dependent models for analysis of reinforced concrete members subjected to fire", ACI Struct. J., 113(3), 481.
  33. EN 1992-1-2:2004 (2005), Eurocode 2: Design of Concrete Structures-Part 1-2: General Rules, Structural Fire Design, European Committee for Standardization (CEN), Brussels, Belgium.
  34. Farzam, M., Fouad, N.A., Grunberg, J. and Fard, M.Y. (2010), "Punching of RC slabs under eccentric loads", Struct. Concrete, 11(4), 211-220. https://doi.org/10.1680/stco.2010.11.4.211
  35. Farzam, M., Sadaghian, H. and Khodadade, G. (2017), "Shear behaviour of elongated rectangular wall-footing connections under eccentric loads", Mag. Concrete Res., 1-36.
  36. Fernandez Ruiz, M., Muttoni, A. and Kunz, J. (2010), "Strengthening of flat slabs against punching shear using postinstalled shear reinforcement", ACI Struct. J., 107(ARTICLE), 434-442.
  37. Firmo, J.P., Arruda, M.R.T., Correia, J.R. and Tiago, C. (2015), "Flexural behaviour of partially bonded carbon fibre reinforced polymers strengthened concrete beams: Application to fire protection systems design", Mater. Des., 65, 1064-1074. https://doi.org/10.1016/j.matdes.2014.10.053
  38. Fletcher, I.A., Welch, S., Torero, J.L., Carvel, R.O. and Usmani, A. (2007), "Behaviour of concrete structures in fire", Therm. Sci., 11(2), 37-52. https://doi.org/10.2298/TSCI0702037F
  39. Genikomsou, A.S. and Polak, M.A. (2015), "Finite element analysis of punching shear of concrete slabs using damaged plasticity model in ABAQUS", Eng. Struct., 98, 38-48. https://doi.org/10.1016/j.engstruct.2015.04.016
  40. George, S.J. and Tian, Y. (2012), "Structural performance of reinforced concrete flat plate buildings subjected to fire", Int. J. Concrete Struct. Mater., 6(2), 111-121. https://doi.org/10.1007/s40069-012-0011-2
  41. Ghoreishi, M., Bagchi, A. and Sultan, M.A. (2015), "Punching shear behavior of concrete flat slabs in elevated temperature and fire", Adv. Struct. Eng., 18(5), 659-674. https://doi.org/10.1260/1369-4332.18.5.659
  42. GID (2015), International Centre for Numerical Methods in Engineering (CIMNE), Barcelona, Spain.
  43. Gosav, A.V., Kiss, Z.I., Onet, T. and Bompa, D.V. (2016), "Failure assessment of flat slab-to-column members", Mag. Concrete Res., 68(17), 887-901. https://doi.org/10.1680/jmacr.15.00405
  44. Harmathy, T.Z. (1970), "Thermal properties of concrete at elevated temperatures", Am. Soc. Test. Mater. J. Mater., 5(1), 47-74.
  45. Hertz, K.D. (1980), "Betonkonstruktioners brandtekniske egenskaber (Fire properties of concrete constructions) - Part 1 - BYG Rapport No. R-141", PhD Thesis, Technical University of Denmark (DTU), Lyngby, Denmark.
  46. Hertz, K.D. (2005), "Concrete strength for fire safety design", Mag. Concrete Res., 57(8), 445-453. https://doi.org/10.1680/macr.2005.57.8.445
  47. Hertz, K.D. (2003), "Limits of spalling of fire-exposed concrete", Fire Saf. J., 38(2), 103-116. https://doi.org/10.1016/S0379-7112(02)00051-6
  48. Hwang, J.W., Ha, S.H., Lee, Y.H., Kim, W.J. and Kwak, H.G. (2013), "A numerical model to evaluate fire-resistant capacity of the reinforced concrete members", J. Korea Concrete Inst., 25(5), 497-508. https://doi.org/10.4334/JKCI.2013.25.5.497
  49. Hwang, J.Y. and Kwak, H.G. (2015), "A mumerical ,odel of reinforced concrete members exposed to fire and after-cooling analysis", J. Comput. Struct. Eng. Inst. Korea, 28(1), 101-113. https://doi.org/10.7734/COSEIK.2015.28.1.101
  50. Ibrahimbegovic, A., Boulkertous, A., Davenne, L., Muhasilovic, M. and Pokrklic, A. (2010), "On modeling of fire resistance tests on concrete and reinforced-concrete structures", Comput. Concrete, 7(4), 285-301. https://doi.org/10.12989/cac.2010.7.4.285
  51. ISO 834-1 (1999), Fire-Resistance Tests-Elements of Building Construction-Part 1: General Requirements, International Organization for Standardization (ISO), Geneva, Switzerland.
  52. Jadooe, A., Al-Mahaidi, R. and Abdouka, K. (2017), "Experimental and numerical study of strengthening of heatdamaged RC beams using NSM CFRP strips", Constr. Build. Mater., 154, 899-913. https://doi.org/10.1016/j.conbuildmat.2017.07.202
  53. Kodur, V.K.R., Wang, T.C. and Cheng, F.P. (2004), "Predicting the fire resistance behaviour of high strength concrete columns", Cement Concrete Compos., 26(2), 141-153 https://doi.org/10.1016/S0958-9465(03)00089-1
  54. Kodur, V.K.R. and Dwaikat, M. (2008), "A numerical model for predicting the fire resistance of reinforced concrete beams", Cement Concrete Compos., 30(5), 431-443. https://doi.org/10.1016/j.cemconcomp.2007.08.012
  55. Kodur, V.K.R. and Phan, L. (2007), "Critical factors governing the fire performance of high strength concrete systems", Fire Saf. J., 42(6-7), 482-488. https://doi.org/10.1016/j.firesaf.2006.10.006
  56. Kontogeorgos, D.A., Mandilaras, I.D. and Founti, M.A. (2015), "Fire behavior of regular and latent heat storage gypsum boards", Fire Mater., 39(5), 507-517. https://doi.org/10.1002/fam.2246
  57. Kordina, K. (1997), U ber das Brandverhalten Punktgestutzter Stahlbetonplatten, (No. 479.
  58. Kotsovos, G.M. and Kotsovos, M.D. (2010), "A new approach to designing reinforcement to resist punching shear", Struct. Eng., 88(8), 20-25.
  59. Kotsovos, M.D. (2014), Design for Punching of Flat Slabs, Compressive Force-Path Method, Springer, Cham.
  60. Li, L. and Purkiss, J.A. (2005), "Stress-strain constitutive equations of concrete material at elevated temperatures", Fire Saf. J., 40, 669-686. https://doi.org/10.1016/j.firesaf.2005.06.003
  61. Liao, J.S., Cheng, F.P. and Chen, C.C. (2013), "Fire resistance of concrete slabs in punching shear", J. Struct. Eng., 140(1), 04013025. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000809
  62. Malhotra, H.L. (1982), Design of Fire-Resisting Structures, Surrey University Press, London, UK.
  63. Moss, P.J., Dhakal, R.P., Wang, G. and Buchanan, A.H. (2008), "The fire behaviour of multi-bay, two-way reinforced concrete slabs", Eng. Struct., 30(12), 3566-3573. https://doi.org/10.1016/j.engstruct.2008.05.028
  64. Naus, D.J. (2010), "A compilation of elevated temperature concrete material property data and information for use in assessments of nuclear power plant reinforced concrete structures (NUREG/CR-7031)", United States Nuclear Regulatory Commission (U.S.NRC), Office of Nuclear Regulatory Research, Oak Ridge, TN.
  65. Brushlinsky, N.N., Hall, J.R., Sokolov, S.V. and Sokolov, P. (2015), "World fire statistics, centre of fire statistics of CTIF", International Association of Fire and Rescue Services, No. 20.
  66. Ozbolt, J., Bosnjak, J., Periskic, G. and Sharma, A. (2014), "3D numerical analysis of reinforced concrete beams exposed to elevated temperature", Eng. Struct., 58, 166-174. https://doi.org/10.1016/j.engstruct.2012.11.030
  67. Petzold, A. and Rohrs, M. (1970), Concrete for High Temperatures, Eds. Phillips, A.B. and Turner, F.H., 2 Edition, McLaren and Sons, London.
  68. Phan, L.T. (1996), "Fire performance of high-strength concrete: A report of the stateof-the-art, NISTIR 5934", Building and Fire Research Laboratory, National Institute of Standards and Technology (NIST), Gaithersburg, MD.
  69. Rahmanian, I. and Wang, Y.C. (2012), "A combined experimental and numerical method for extracting temperature-dependent thermal conductivity of gypsum boards", Constr. Build. Mater., 26(1), 707-722. https://doi.org/10.1016/j.conbuildmat.2011.06.078
  70. Salem, H., Issa, H., Gheith, H. and Farahat, A. (2012), "Punching shear strength of reinforced concrete flat slabs subjected to fire on their tension sides", HBRC J., 8(1), 36-46. https://doi.org/10.1016/j.hbrcj.2011.10.001
  71. Smith, H., Stratford, T. and Bisby, L. (2016), "Deflection response of reinforced concrete slabs tested in punching shear in fire", Appl. Struct. Fire Eng., DOI:https://doi.org/10.14311/asfe.2015.031
  72. Song, Y., Zhang, Z., Qing, L. and Yu, C. (2007), "Biaxial tensilecompressive experiment of concrete at high temperatures", Front. Arch. Civil Eng. China, 1(1), 94-98. https://doi.org/10.1007/s11709-007-0009-z
  73. Wang, Y., Burgess, I., Wald, F. and Gillie, M. (2012), Performance-based Fire Engineering of Structures, CRC Press.
  74. Wijayasinghe, M. (2011), "Fire losses in Canada year 2007 and selected years", Council of Canadian Fire Marshals and Fire Commissioners, Calgary, Alberta, Canada.
  75. Wosatko, A., Pamin, J., Winnicki, A., Putanowicz, R. and Polak, M.A. (2006), "Numerical simulation of damage in reinforced concrete slab-column connection", Proc. EURO-C 2006 Int. Conf. Computational Modelling of Concrete Structures, 881-889.

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