Advances in concrete construction

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Strut-and-tie model for shear capacity of corroded reinforced concrete columns

  • Tran, Cao Thanh Ngoc (Department of Civil Engineering, International University) ;
  • Nguyen, Xuan Huy (Faculty of Construction Engineering, University of Transport and Communications) ;
  • Nguyen, Huy Cuong (Faculty of Construction Engineering, University of Transport and Communications) ;
  • Vu, Ngoc Son (Department of Structural Mechanics, National University of Civil Engineering)
  • Received : 2020.03.11
  • Accepted : 2020.08.05
  • Published : 2020.09.25
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Abstract

An analytical model is developed in this paper to predict the shear capacity of reinforced concrete (RC) columns with corroded transverse reinforcements. The shear strength model for corroded RC columns is proposed based on modifying the existing strut-and-tie model, which considers the deformational compatibility between truss and arch mechanisms. The contributions to the shear strength from both truss and arch mechanisms are incorporated in the proposed model. The effects of corrosion level of transverse reinforcements are considered in the proposed model through the minimum residual cross-sectional area of transverse reinforcements and the reduction of concrete compressive strength for the cover area. The shear strengths calculated from the developed model are compared with the experimental results from Vu's study (2017), which consisted of RC columns with corroded transverse reinforcements showing shear failure under the cyclic loading. The comparison results indicate satisfactory correlations. Parametric studies are conducted based on the developed shear strength model to explore the effects of column axial loading, aspect ratios, transverse reinforcements and the corrosion levels in transverse reinforcements to the shear strength of RC columns with corroded transverse reinforcements.

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References

  1. ACI Committee 318-14 (2014), Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary (ACI 318R-14), American Concrete Institute, Farmington Hills, Mich.
  2. ASCE/SEI 41-13 (2014), Seismic Evaluation and Retrofit of Existing Buildings, American Society of Civil Engineers, Reston, Virginia.
  3. ASTM G1-03 (2003), Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens, West Conshohocken, PA, USA.
  4. Ayinde, O.O., Zuo, X.B. and Yin, G.J. (2019), "Numerical analysis of concrete degradation due to chloride-induced steel corrosion", Adv. Concrete Constr., 7(4), 203-210. https://doi.org/10.12989/acc.2019.7.4.203.
  5. BS EN 1992-1-1:2004 (2004), Eurocode 2: Design of Concrete Structures, Part 1-1: General Rules and Rules for Buildings.
  6. Cagatay, I.H. (2005), "Experimental evaluation of buildings damaged in recent earthquakes in Turkey", Eng. Fail. Anal., 12(3), 440-452. https://doi.org/10.1016/j.engfailanal.2004.02.007.
  7. Du, Y.G., Clark, L.A. and Chan, A.H.C. (2005), "Residual capacity of corroded reinforced bars", Mag. Concrete Res., 57(3), 135-147. https://doi.org/10.1680/macr.2005.57.3.135.
  8. EERI (2017), M6.5 Pidie Jaya Earthquake Aceh Indonesia on December 7, 2016, EERI Earthquake Reconnaissance Team Report, Oakland, CA, USA.
  9. Goksu, C. and Ilki, A. (2016), "Seismic behavior of reinforced concrete columns with corroded deformed reinforcing bars", ACI Struct. J., 113(5), 1053-1064. https://doi.org/10.14359/51689030
  10. Hosseini, S.A., Shabakhty, N. and Khankahdani, F.A. (2019), "Sensitivity analysis of flexural strength of RC beams influenced by reinforcement corrosion", Struct. Eng. Mech., 72(4), 479-489. https://doi.org/10.12989/sem.2019.72.4.479.
  11. Hsu, T.T.C. and Mo, Y.L. (2010), Unified Theory of Concrete Structures, Wiley, Chichester, UK.
  12. Kim, J.H. and Mander, J.B. (1999), "Truss modeling of reinforced concrete shear-flexure behavior", MCEER-99-0005, The State University of New York at Buffalo.
  13. Li, H., Li, B., Jin, R., Li, S. and Yu, J.G. (2018), "Effects of sustained loading and corrosion on the performance of reinforced concrete beams", Constr. Build. Mater., 169, 179-187. https://doi.org/10.1016/j.conbuildmat.2018.02.199.
  14. Ma, Y., Che, Y. and Gong, J. (2012), "Behavior of corrosion damaged circular reinforced concrete columns under cyclic loading", Constr. Build. Mater., 29, 548-556. https://doi.org/10.1016/j.conbuildmat.2011.11.002.
  15. Malerba, P.G., Sgambi, L., Ielmini, D. and Gotti, G. (2017), "Influence of corrosive phenomena on bearing capacity of RC and PC beams", Adv. Concrete Constr., 5(2), 117-143. https://doi.org/10.12989/acc.2017.5.2.117.
  16. Meda, A., Mostosi, S., Rinaldi, Z. and Riva, P. (2014), "Experimental evaluation of the corrosion influence on the cyclic behaviour of RC columns", Eng. Struct., 76, 112-123. https://doi.org/10.1016/j.engstruct.2014.06.043.
  17. Pan, Z. and Li, B. (2013), "Truss-arch model for shear strength of shear-critical reinforced concrete columns", ASCE J. Struct. Eng., 139(4), 548-560. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000677.
  18. Paulay, T. and Priestley, M.J.N. (1992), Seismic Design of Reinforced Concrete Masonry Buildings, John Willey & Sons, N.Y.
  19. Priestley, M.J.N., Verma, R. and Xiao, Y. (1994), "Seismic shear strength of reinforced concrete columns", ASCE J. Struct. Eng., 120(7), 2310-2329. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:8(2310).
  20. Sezen, H. and Moehle, J. (2004), "Shear strength model for lightly reinforced concrete columns", ASCE J. Struct. Eng., 130(11), 1692-1703. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:11(1692).
  21. Vu, N.S. (2017), "Experimental and analytical investigations of seismic behavior of corroded reinforced concrete members", Ph.D. Thesis, Nanyang Technological University, Singapore.
  22. Watanabe, F. and Ichinose, T. (1991), "Strength and ductility design of RC members subjected to combined bending and shear", Proceedings of the Workshop on Concrete in Earthquake, University of Houston, Texas, 429-438.
  23. Yang, S.Y., Song, X.B., Jia, H.X., Chen, X. and Liu, X.L. (2016), "Experimental research on hysteristic behaviors of corroded reinforced concrete columns with different maximum amounts of corrosion of rebar", Constr. Build. Mater., 121, 319-327. https://doi.org/10.1016/j.conbuildmat.2016.06.002.
  24. Zhang, W., Zhang, H., Gu, X. and Liu, W. (2018), "Structural behavior of corroded reinforced concrete beams under sustained loading", Constr. Build. Mater., 174, 675-684. https://doi.org/10.1016/j.conbuildmat.2018.04.145.
  25. Zhao, H.L., Li, H., Li, W., Zhao Y.G. and Dong, W. (2018), "An empirical model for the shear strength of corroded reinforced concrete beam", Constr. Build. Mater., 188, 1234-1248. https://doi.org/10.1016/j.conbuildmat.2018.08.123.