Computers and Concrete

  • 제6권6호
  • /
  • Pages.473-490
  • /
  • 2009
  • /
  • 1598-8198(pISSN)
  • /
  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Load carrying capacity of deteriorated reinforced concrete columns

  • Tapan, Mucip (Department of Civil Engineering, Yuzuncu Yil University, Zeve Kampusu) ;
  • Aboutaha, Riyad S. (Department of Civil & Environmental Engineering, Syracuse University)
  • 투고 : 2008.09.15
  • 심사 : 2009.09.16
  • 발행 : 2009.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a new methodology to evaluate the load carrying capacity of deteriorated non-slender concrete bridge pier columns by construction of the full P-M interaction diagrams. The proposed method incorporates the actual material properties of deteriorated columns, and accounts for amount of corrosion and exposed corroded bar length, concrete loss, loss of concrete confinement and strength due to stirrup deterioration, bond failure, and type of stresses in the corroded reinforcement. The developed structural model and the damaged material models are integrated in a spreadsheet for evaluating the load carrying capacity for different deterioration stages and/or corrosion amounts. Available experimental and analytical data for the effects of corrosion on short columns subject to axial loads combined with moments (eccentricity induced) are used to verify the accuracy of proposed model. It was observed that, for the limited available experimental data, the proposed model is conservative and is capable of predicting the load carrying capacity of deteriorated reinforced concrete columns with reasonable accuracy. The proposed analytical method will improve the understanding of effects of deterioration on structural members, and allow engineers to qualitatively assess load carrying capacity of deteriorated reinforced concrete bridge pier columns.

키워드

참고문헌

  1. Aboutaha, R.S. (2004), Guide for Maintenance, and Rehabilitation of Concrete Bridge Components with FRP Composites-Research into Practice, TIRC & NYSDOT, NY, USA.
  2. Almusallam, A.A., Al-Gathani, A.S., Aziz, A.R. and Rasheeduzzafar (1996), "Effect of Reinforcement Corrosion on Bond Strength", Constr. Build. Mater., 10(2), 123-129. https://doi.org/10.1016/0950-0618(95)00077-1
  3. American Association of State Highway and Transportation Officials (2003), Guide manual for condition evaluation and load and resistance factor rating (LRFR) of highway bridges, 1st Edition, AASHTO Publications. Washington DC, USA.
  4. Bayrak, O. and Sheikh, S.A. (2001), "Plastic hinge analysis", J. Struct. Eng-ASCE, 127(9), 1092-1100. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:9(1092)
  5. Du, Y.G., Clark, L.A. and Chan, A.H.C. (2005), "Effect of corrosion on ductility of reinforcing bars", Mag. Concrete Res., 57(7), 407-419. https://doi.org/10.1680/macr.2005.57.7.407
  6. Du, Y.G., Clark, L.A. and Chan, A.H.C. (2005), "Residual capacity of corroded reinforcing bars", Mag. Concrete Res., 57(3), 135-147. https://doi.org/10.1680/macr.2005.57.3.135
  7. Federal Highway Administration (2004), Status of the Nation's highways, bridges, and transit: 2004 Conditions and performance report to congress, http://www.fhwa.dot.gov/policy/2004cpr/index.htm (Aug. 13, 2006).
  8. MacGregor, J.G. (1997), Reinforced Concrete Mechanics and Design, 3rd Edition, Prentice Hall, New Jersey.
  9. Mau, S.T. and El-Mabsout, M. (1989), "Inelastic buckling of reinforcing bars", J. Eng. Mech., 115(1), 1-17. https://doi.org/10.1061/(ASCE)0733-9399(1989)115:1(1)
  10. Monti, G., and Nuti, C. (1992), "Nonlinear cyclic behavior of reinforcing bars including buckling", J. Struct. Eng-ASCE, 118(12), 3268-3284. https://doi.org/10.1061/(ASCE)0733-9445(1992)118:12(3268)
  11. Pantazopoulou, S.J. (1998), "Detailing for reinforcement stability in RC members", J. Struct. Eng-ASCE, 124(6), 623-632. https://doi.org/10.1061/(ASCE)0733-9445(1998)124:6(623)
  12. Saatcioglu, M. and Razvi, S. (1992), "Strength and Ductility of Confined Concrete", J. Struct. Eng-ASCE, 118(6), 1590-1607. https://doi.org/10.1061/(ASCE)0733-9445(1992)118:6(1590)
  13. Tapan, M. (2007), Strength Evaluation of Deteriorated Reinforced Concrete Bridge Columns, PhD. Dissertation, Syracuse University, USA.

피인용 문헌

  1. Evaluation of dynamic deformations of slab-on-girder bridge under moving trucks with corrosion-damaged columns vol.66, 2014, https://doi.org/10.1016/j.engstruct.2014.02.005