Punching Shear Resistance of Corroded Slab–Column Connections Subjected to Eccentric Load
Publication: Journal of Structural Engineering
Volume 149, Issue 1
Abstract
Due to the use of deicing salt, marine and offshore environments may cause rebar corrosion in RC flat-slab floor systems. This increases the possibility of punching shear failure of slab–column connections. However, few research results are available for RC slab–column connections with corroded rebar under eccentric load, which is very common in realistic loading conditions. To fill this gap, 15 full-scale RC flat slab–column connections were fabricated and tested to investigate the performance of corroded slab–column connections under eccentric load. The design variables included reinforcement ratio, loading eccentricity, and degree of rebar corrosion. There were two stages of the experimental process, including (1) accelerated rebar corrosion tests; and (2) quasi-static tests. It was found from the test results that, in general, rebar corrosion had detrimental effects on the punching shear strength and stiffness of the connections. In addition, corrosion of reinforcement may change the failure mode of slab–column connections. However, it was unexpected that the energy-dissipating capacity and deformation capacity of slab–column connections with high reinforcement ratio and small loading eccentricity increased with increasing corrosion degree.
Get full access to this article
View all available purchase options and get full access to this article.
Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research was supported by research grants provided by the National Natural Science Foundation of China (Grant Nos. 52022024 and 52168028) and the Natural Science Foundation of Guangxi (Grant No. 2021GXNSFFA196001). Any opinions, findings, and conclusions expressed in this paper are those of the writers and do not necessarily reflect the views of the National Natural Science Foundation of China.
References
ACI (American Concrete Institute). 2019. Building code requirements for structural concrete. ACI 318-19. Farmington Hills, MI: ACI.
Almusallam, A. A., A. S. Al-Gahtani, A. R. Aziz, F. H. Dakhil, and Rasheeduzzafar. 1996. “Effect of reinforcement corrosion on flexural behavious of concrete slabs.” J. Mater. Civ. Eng. 8 (3): 123–127. https://doi.org/10.1061/(ASCE)0899-1561(1996)8:3(123).
Al-Swaidani, A. M., and S. D. Aliyan. 2015. “Effect of adding scoria as cement replacement on durability-related properties.” Int. J. Concr. Struct. Mater. 9 (2): 241–254. https://doi.org/10.1007/s40069-015-0101-z.
Bazant, Z. P., and Z. P. Cao. 1987. “Size effect in punching shear failure of slabs.” ACI Struct. J. 84 (6): 44–53.
BSI (British Standard Institution). 1997. Structural use of concrete. Part I: Code of practice for design and construction. BS 8110. London: BIS.
Cairns, J., G. A. Plizzari, Y. Du, D. W. Law, and C. Franzoni. 2005. “Mechanical properties of corrosion-damaged reinforcement.” ACI Struct. J. 102 (4): 256–264.
Castel, A., R. Francois, and G. Arliguie. 2000a. “Mechanical behaviour of corroded reinforced concrete beams—Part 1: Experimental study of corroded beams.” Mater. Struct. 33 (9): 539–544. https://doi.org/10.1007/BF02480533.
Castel, A., R. Francois, and G. Arliguie. 2000b. “Mechanical behaviour of corroded reinforced concrete beams—Part 2: Bond and notch effects.” Mater. Struct. 33 (9): 545–551. https://doi.org/10.1007/BF02480534.
CEN (European Commitee for Standardization). 2004. Design of concrete structures—Part 1-1: General rules and rules for buildings. Eurocode 2. Brussels, Belgium: CEN.
CSA (Canadian Standards Association). 2014. Design of concrete structures. CAN/CSA A23.3-14. Mississauga, ON, Canada: CSA.
Drakatos, I. S., A. Muttoni, and K. Beyer. 2018. “Mechanical model for drift-induced punching of slab-column connections without transverse reinforcement.” ACI Struct. J. 115 (2): 463–474. https://doi.org/10.14359/51701110.
Durrani, A. J., Y. Du, and Y. H. Luo. 1995. “Seismic resistance of nonductile slab-column connections in existing flat-slab buildings.” ACI Struct. J. 92 (4): 479–487.
fib (Fédération International du Béton). 2012. Model Code 2010 final completed draft. Bulletins d’Informations 65 and 66. Lusanne, Switzerland: fib.
González, J. A., C. Andrade, C. Alonso, and S. Feliu. 1995. “Comparison of rates of general corrosion and maximum pitting penetration on concrete embedded steel reinforcement.” Cem. Concr. Res. 25 (2): 257–264. https://doi.org/10.1016/0008-8846(95)00006-2.
Hawkins, N. M., A. Bao, and J. Yamazaki. 1989. “Moment transfer from concrete slabs to columns.” ACI Struct. J. 86 (70): 705–716.
Ikehata, S., H. Ishiguro, T. Nakano, and H. Nakamura. 2020. “Experimental evaluation of punching shear capacity of reinforced concrete slabs with horizontal crack due to compression rebar corrosion.” Struct. Concr. 21 (3): 890–904. https://doi.org/10.1002/suco.201900438.
Jang, D. H., and J. H. Shen. 1986. “Strength of concrete slabs in punching shear.” J. Struct. Eng. 112 (13): 2578–2591.
Lee, C., J. F. Bonacci, M. D. Thomas, M. Maalej, S. Khajehpour, N. Hearn, S. Pantazopoulou, and S. Sheikh. 2000. “Accelerated corrosion and repair of reinforced concrete columns using carbon fibre reinforced polymer sheets.” Can. J. Civ. Eng. 27 (5): 941–948. https://doi.org/10.1139/l00-030.
Liu, J. R., Y. Tian, S. L. Orton, and A. M. Said. 2015. “Resistance of flat-plate buildings against progressive collapse. 1: Modelling of slab-column connections.” J. Struct. Eng. 141 (12): 04015053.
Maaddawy, T., and K. A. Soudki. 2003. “Effectiveness of impressed current technique to simulate corrosion of steel reinforcement in concrete.” J. Mater. Civ. Eng. 15 (1): 41–47. https://doi.org/10.1061/(ASCE)0899-1561(2003)15:1(41).
Marano, G. C., G. Quaranta, and M. Mezzina. 2008. “Fuzzy time-dependent reliability analysis of RC beams subject to pitting corrosion.” J. Mater. Civ. Eng. 20 (9): 578–587. https://doi.org/10.1061/(ASCE)0899-1561(2008)20:9(578).
Marzouk, H., M. Emam, and M. S. Hilal. 1998. “Effect of high-strength concrete slab on the behaviour of slab-column connections.” ACI Struct. J. 95 (3): 227–237.
Marzouk, H., M. Osman, and S. Helmy. 2000. “Behavior of high-strength lightweight aggregate concrete slabs under column load and unbalanced moment.” ACI Struct. J. 97 (3): 860–866.
MHURD (Ministry of House and Urban-Rural Development of People’s Republic of China). 2010. Code for design of concrete structures. GB 50010. Beijing: MHURD.
Muttoni, A. 2008. “Punching shear strength of reinforced concrete slabs without transverse reinforcement.” ACI Struct. J. 105 (4): 440–450.
Okada, K., K. Kobayashi, and T. Miyagawa. 1988. “Influence of longitudinal cracking due to reinforcement corrosion on characteristics of reinforced concrete members.” J. Struct. Eng. 85 (2): 134–140.
Ou, Y., Y. T. T. Susanto, and H. Roh. 2016. “Tensile behavior of naturally and artificially corroded steel bars.” Constr. Build. Mater. 103 (Jan): 93–104. https://doi.org/10.1016/j.conbuildmat.2015.10.075.
Park, R., and W. L. Gamble. 1981. Reinforced concrete slabs. New York: Wiley.
Qian, K., and B. Li. 2015. “Strengthening of multibay reinforced concrete flat slabs to mitigate progressive collapse.” J. Struct. Eng. 141 (6): 04014154. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001125.
Teng, S., K. Chanthabouala, D. T. Y. Lim, and R. Hidayat. 2018. “Punching shear strength of slabs and influence of low reinforcement ratio.” ACI Struct. J. 115 (1): 139–150.
Tian, Y., J. O. Jirsa, O. B. Widianto, and J. F. Argudo. 2008. “Behavior of slab-column connections of existing flat-plate structures.” ACI Struct. J. 105 (5): 561–569.
Weng, Y. H., K. Qian, F. Fu, and Q. Fang. 2020. “Numerical investigation on load redistribution capacity of flat slab substructures to resist progressive collapse.” J. Build. Eng. 29 (May): 101109. https://doi.org/10.1016/j.jobe.2019.101109.
Xue, H. Z., B. P. Gilbert, H. Guan, and X. Z. Lu. 2018. “Load transfer and collapse resistance of RC flat plates under interior column removal scenario.” J. Struct. Eng. 144 (7): 04018087. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002090.
Xue, H. Z., H. Guan, B. P. Gilbert, and X. Z. Lu. 2020. “Comparative and parametric studies on behavior of RC-flat plates subjected to interior-column loss.” J. Struct. Eng. 146 (9): 04020183. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002757.
Information & Authors
Information
Published In
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Aug 14, 2021
Accepted: Jul 15, 2022
Published online: Nov 4, 2022
Published in print: Jan 1, 2023
Discussion open until: Apr 4, 2023
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.