Effect of Fire Damage on Seismic Behavior of Cast-in-Place Reinforced Concrete Columns
Publication: Journal of Structural Engineering
Volume 146, Issue 11
Abstract
This paper presents the results of an experimental study that was conducted to investigate the postfire seismic behavior of reinforced concrete columns. Five full-scale, flexure-critical code-complying (e.g., ACI 318-14) cast-in-place reinforced concrete columns were tested to failure under a constant axial load and reversed cyclic lateral displacements after being exposed to an ISO-834 standard fire for 30, 60, and 90 min. Other than the effects of the duration of the fire exposure, the effects of the thickness of the concrete cover (25 and 40 mm) on the structural performance was also investigated for the short fire exposure duration (30 min). The responses of the columns were analyzed in terms of lateral load-displacement relationships, ductility, stiffness, energy dissipation capacities, and residual displacements. The test results indicated that the fire exposure reduced the lateral load capacity of the columns, whereas the deformability capabilities were found to be satisfactory in terms of a structural response. It was also observed that the thickness of the concrete cover had only a slight influence on the postfire seismic behavior of the columns. Furthermore, a numerical study was conducted to predict the load-displacement response of the fire exposed columns. The comparison of the experimentally and numerically obtained load-displacement relationships indicated that the principles of structural mechanics usually applied to conventional columns are also valid for the columns exposed to fire.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This research was supported by the Istanbul Technical University (ITU) Scientific Research Department (Project No. 39548) and the Scientific and Technological Research Council of Turkey under Grant No. 216M535. The authors are thankful to Yapı Merkezi Prefabrication Inc., Allianz Insurance Inc., Turk YTONG Inc., and Fibrobeton Inc. for financial support as well as the staff of ITU Structural and Earthquake Engineering, ITU Infrastructure Materials Laboratories, and the Fire Laboratory at the Turkish Standard Institute for their efforts.
References
Abrams, M. S. 1971. “Compressive strength of concrete at temperatures to 1600F.” In Vol. 25 of Temperature and concrete, 33–58. Detroit, MI: American Concrete Institute.
ACI (American Concrete Institute). 1997. Standard method for determining fire resistance of concrete and masonry construction assemblies. ACI 216.1. Farmington Hills, MI: ACI.
ACI (American Concrete Institute). 2013. Guide for testing reinforced concrete structural elements under slowly applied simulated seismic loads. ACI 374.2R. Farmington Hills, MI: ACI.
ACI (American Concrete Institute). 2014. Building code requirements for structural concrete. ACI 318. Farmington Hills, MI: ACI.
Bae, S., and O. Bayrak. 2008. “Plastic hinge length of reinforced concrete columns.” ACI Struct. J. 105 (3): 290–300.
Bailey, C. G., and M. Yaqub. 2012. “Seismic strengthening of shear critical post-heated circular concrete columns wrapped with FRP composite jackets.” Compos. Struct. 94 (3): 851–864. https://doi.org/10.1016/j.compstruct.2011.09.004.
Bénichou, N., H. Mostafaei, M. F. Green, and K. Hollingshead. 2013. “The impact of fire on seismic resistance of fibre reinforced polymer strengthened concrete structural systems.” Can. J. Civ. Eng. 40 (11): 1044–1049. https://doi.org/10.1139/cjce-2012-0521.
Bisby, L. A., J. F. Chen, S. Q. Li, T. J. Stratford, N. Cueva, and K. Crossling. 2011. “Strengthening fire-damaged concrete by confinement with fibre-reinforced polymer wraps.” Eng. Struct. 33 (12): 3381–3391. https://doi.org/10.1016/j.engstruct.2011.07.002.
Brushlinsky, N. N., M. Ahrens, S. V. Sokolov, and P. Wagner. 2016. World fire statistics. Ljubljana, Slovenia: Fire Association Slovenia.
CEN (European Committee for Standardization). 2004a. Eurocode 2: Design of concrete structures. Part 1.1. EN 1992-1-1. Brussels, Belgium: CEN.
CEN (European Committee for Standardization). 2004b. Eurocode 2: Design of concrete structures. Part 1.2. EN 1992-1-2. Brussels, Belgium: CEN.
Chang, Y. F., Y. H. Chen, M. S. Sheu, and G. C. Yao. 2006. “Residual stress–strain relationship for concrete after exposure to high temperatures.” Cem. Concr. Res. 36 (10): 1999–2005. https://doi.org/10.1016/j.cemconres.2006.05.029.
Chen, Y. H., Y. F. Chang, G. C. Yao, and M. S. Sheu. 2009. “Experimental research on post-fire behaviour of reinforced concrete columns.” Fire Saf. J. 44 (5): 741–748. https://doi.org/10.1016/j.firesaf.2009.02.004.
Concrete Society. 2008. Assessment, design and repair of fire-damaged concrete structures. Camberley, UK: Concrete Society.
Dhakal, R. P., and K. Maekawa. 2002. “Reinforcement stability and fracture of cover concrete in reinforced concrete members.” J. Struct. Eng. 128 (10): 1253–1262. https://doi.org/10.1061/(ASCE)0733-9445(2002)128:10(1253).
FEMA. 2009. Effect of strength and stiffness degradation on seismic response. FEMA P440a. Redwood City, CA: Applied Technology Council.
fib (International Federation for Structural Concrete). 2008. Fire design of concrete structures—Structural behavior and assessment. Lausanne, Switzerland: fib.
Franssen, J. M., and T. Gernay. 2017. “Modeling structures in fire with SAFIR: Theoretical background and capabilities.” J. Struct. Fire Eng. 8 (3): 300–323. https://doi.org/10.1108/JSFE-07-2016-0010.
Harada, T., J. Takeda, S. Yamane, and F. Furumura. 1972. “Strength, elasticity and thermal properties of concrete subjected to elevated temperatures.” ACI Spec. Publ. 34 (Jan): 377–406.
ISO. 1999. Fire resistance tests: Elements of building construction. Part 1: General requirements. ISO834. Geneva: ISO.
Jau, W. C., and K. L. Huang. 2008. “A study of reinforced concrete corner columns after fire.” Cem. Concr. Compos. 30 (7): 622–638. https://doi.org/10.1016/j.cemconcomp.2007.09.009.
Kuang, J. S. 2017. “Design considerations for ductile reinforced concrete columns: Hong Kong case studies.” In Proc., Annual Concrete Seminar. Hong Kong: Development Bureau.
Li, L. Z., X. Liu, J. T. Yu, Z. D. Lu, M. N. Su, J. H. Liao, and M. Xia. 2019. “Experimental study on seismic performance of post-fire reinforced concrete frames.” Eng. Struct. 179 (Jan): 161–173. https://doi.org/10.1016/j.engstruct.2018.10.080.
Li, W., B. Chen, and T. Wang. 2019a. “Seismic performance of concrete-filled double-skin steel tubes after exposure to fire: Analysis.” J. Constr. Steel Res. 162 (Nov): 105753. https://doi.org/10.1016/j.jcsr.2019.105753.
Li, W., T. Wang, and L. H. Han. 2019b. “Seismic performance of concrete-filled double-skin steel tubes after exposure to fire: Experiments.” J. Constr. Steel Res. 154 (Mar): 209–223. https://doi.org/10.1016/j.jcsr.2018.12.003.
Lie, T. T., T. J. Rowe, and T. D. Lin. 1986. “Residual strength of fire exposed RC columns. Evaluation and repair of fire damage to concrete.” ACI Spec. Publ. 92 (9): 153–174.
Malhotra, H. L. 1956. “The effect of temperature on the compressive strength of concrete.” Mag. Concr. Res. 8 (23): 85–94. https://doi.org/10.1680/macr.1956.8.23.85.
Mander, J. B., M. J. Priestley, and R. Park. 1988. “Theoretical stress-strain model for confined concrete.” J. Struct. Eng. 114 (8): 1804–1826. https://doi.org/10.1061/(ASCE)0733-9445(1988)114:8(1804).
Memon, M. S., and S. A. Sheikh. 2005. “Seismic resistance of square concrete columns retrofitted with glass fiber-reinforced polymer.” ACI Struct. J. 102 (5): 774.
Mostafaei, H. 2013. “Residual lateral load capacity of a high strength reinforced concrete column after fire damage.” ACI Spec. Publ. 293 (Oct): 1–12.
Mostafaei, H., F. Vecchio, and N. Bénichou. 2009. “Seismic resistance of fire-damaged reinforced concrete columns.” In Vol. 1 of Proc., ATC and SEI Conf. on Improving the Seismic Performance of Existing Buildings and Other Structures, 1396–1407. San Francisco: Applied Technology Council.
Neves, I. C., J. P. C. Rodrigues, and A. D. P. Loureiro. 1996. “Mechanical properties of reinforcing and pre-stressing steels after heating.” J. Mater. Civ. Eng. 8 (4): 189–194. https://doi.org/10.1061/(ASCE)0899-1561(1996)8:4(189).
Ni, S., and A. C. Birely. 2018. “Post-fire seismic behavior of reinforced concrete structural walls.” Eng. Struct. 168 (Aug): 163–178. https://doi.org/10.1016/j.engstruct.2018.04.018.
Papayianni, J., and T. Valiasis. 1991. “Residual mechanical properties of heated concrete incorporating different pozzolanic materials.” Mater. Struct. 24 (2): 115–121. https://doi.org/10.1007/BF02472472.
Paulay, T., and M. N. Priestley. 1992. Seismic design of reinforced concrete and masonry buildings. New York: Wiley.
Priestley, M. J. N. 1993. “Myths and fallacies in earthquake engineering: Conflicts between design and reality.” ACI Spec. Publ. 157 (Oct): 231–254.
Priestley, M. J. N., F. Seible, G. M. Calvi, and G. M. Calvi. 1996. Seismic design and retrofit of bridges. New York: Wiley.
Raut, N., and V. Kodur. 2011. “Response of reinforced concrete columns under fire-induced biaxial bending.” ACI Struct. J. 108 (5): 610–619.
Salse, E., and T. D. Lin. 1976. “Structural fire resistance of concrete.” J. Struct. Div. 102 (1): 51–63.
Turkish Fire Regulation. 2007. Guideline for protection of buildings in fire. [In Turkish.] Ankara, Turkey: Official Gazette.
UBC (Uniform Building Code). 1997. International conference of building officials. Whittier, CA: UBC.
Usmani, A. S. 2008. “Research priorities for maintaining structural fire resistance after seismic damage.” In Proc., 14th World Conf. on Earthquake Engineering, 12–17. Beijing: Chinese Society for Earthquake Engineering.
Yaqub, M., and C. G. Bailey. 2012. “Seismic performance of shear critical post-heated reinforced concrete square columns wrapped with FRP composites.” Constr. Build. Mater. 34 (Sep): 457–469. https://doi.org/10.1016/j.conbuildmat.2012.02.076.
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Published In
Journal of Structural Engineering
Volume 146 • Issue 11 • November 2020
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Dec 18, 2019
Accepted: May 11, 2020
Published online: Aug 19, 2020
Published in print: Nov 1, 2020
Discussion open until: Jan 19, 2021
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