Advances in concrete construction

  • 제1권2호
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  • Pages.163-185
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  • 2013
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  • 2287-5301(pISSN)
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  • 2287-531X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

A unified design procedure for preloaded rectangular RC columns strengthened with post-compressed plates

  • Wang, L. (College of Civil Engineering, Nanjing University of Technology) ;
  • Su, R.K.L. (Department of Civil Engineering, The University of Hong Kong)
  • 투고 : 2012.10.19
  • 심사 : 2013.06.26
  • 발행 : 2013.06.01
⟨ 이전 논문 다음 논문 ⟩

초록

The use of post-compressed plates (PCP) to strengthen preloaded reinforced concrete (RC) columns is an innovative approach for alleviating the effects of stress-lagging between the original column and the additional steel plates. Experimental and theoretical studies on PCP-strengthened RC columns have been presented in our companion papers. The results have demonstrated the effectiveness of this technique for improving the strength, deformability and ductility of preloaded RC columns when subjected to axial or eccentric compression loading. An original and comprehensive design procedure is presented in this paper to aid engineers in designing this new type of PCP-strengthened RC column and to ensure proper strengthening details for desirable performance. The proposed design procedure consists of five parts: (1) the estimation of the ultimate load capacity of the strengthened column, (2) the design of the initial pre-camber displacement of the steel plate, (3) the design of the vertical spacing of the bolts, (4) the design of the bearing ends of the steel plates, and (5) the calculation of the tightening force of the bolts. A worked example of the design of a PCP-strengthened RC column is shown to demonstrate the application of the proposed design procedure.

키워드

참고문헌

  1. Adam, J.M., Gimenez, E., Calderon, P.A., Pallares, F.J. and Ivorra, S. (2008), "Experimental study of beam column joints in axially loaded RC columns strengthened by steel angles and strips", Steel Compos. Struct., 8(4), 329-342. https://doi.org/10.12989/scs.2008.8.4.329
  2. Adam, J.M., Ivorra, S., Gimenez, E., Moragues, J.J., Miguel, P., Miragall, C. and Calderon, P.A. (2007), "Behaviour of axially loaded RC columns strengthened by steel angles and strips", Steel Compos. Struct, 7(5), 405-419. https://doi.org/10.12989/scs.2007.7.5.405
  3. Adam, J.M., Ivorra, S., Pallares, F.J., Gimenez, E. and Calderon, P.A. (2009), "Axially loaded RC columnsstrengthened by steel caging: Finite element modeling", Construct. Build. Mater., 23(6), 2265-2276. https://doi.org/10.1016/j.conbuildmat.2008.11.014
  4. Adam, J.M., Ivorra, S., Pallares, F.J., Gimenez, E. and Calderon, P.A. (2009), "Axially loaded RC columnsstrengthened by steel caging", Proceeding of the ICE - Structures and Buildings, 162(3), 199-208. https://doi.org/10.1680/stbu.2009.162.3.199
  5. Adam, J.M., Ivorra, S., Pallares, F.J., Gimenez, E. and Calderon, P.A. (2008), "Column-joint assembly in RC columns strengthened by steel caging", Proceeding of the ICE - Structures and Buildings, 161(6), 337-348. https://doi.org/10.1680/stbu.2008.161.6.337
  6. Calderon, P.A., Adam, J.M., Ivorra, S., Pallares, F.J. and Gimenez, E. (2009), "Design strength of axiallyloaded RC columns strengthened by steel caging", Mater. Design, 30(10), 4069-4080. https://doi.org/10.1016/j.matdes.2009.05.014
  7. Cirtek, L. (2001), "RC columns strengthened with bandage - experimental programme and design recommendations", Construct. Build. Mater., 15(8), 341-349. https://doi.org/10.1016/S0950-0618(01)00015-0
  8. Cirtek, L. (2001), "Mathematical model of RC banded column behaviour", Construct. Build. Mater., 15(8), 351-359.
  9. Collins, M.P. and Mitchell, D. (1991), Prestressed Concrete Structures, Prentice-Hall,NJ, USA.
  10. Ersoy, U., Suleiman, R. and Tankut, T. (1993), "Behavior of jacketed columns", ACI Struct. J., 90(3), 288-293.
  11. Frangou, M., Pilakoutas, K. and Dritsos, S. (1995), "Structural repair/strengthening of RC columns", Construct. Build. Mater., 9(5), 259-266. https://doi.org/10.1016/0950-0618(95)00013-6
  12. Garzon-Roca, J., Adam, J.M. and Calderon, P.A. (2011), "Behaviour of RC columns strengthened by steelcaging under combined bending and axial loads", Construct. Build. Mater., 25(5), 2402-2412. https://doi.org/10.1016/j.conbuildmat.2010.11.045
  13. Garzon-Roca, J., Ruiz-Pinilla, J., Adam, J.M. and Calderon, P.A. (2011), "An experimental study on steel caged RC columns subjected to axial force and bending moment", Eng. Struct., 33(2), 580-590. https://doi.org/10.1016/j.engstruct.2010.11.016
  14. Gimenez, E., Adam, J.M., Ivorra, S. and Calderon, P.A. (2009), "Influence of strips configuration on the behaviour of axially loaded RC columns strengthened by steel caging and strips", Mater. Design, 30(10), 4103-4111. https://doi.org/10.1016/j.matdes.2009.05.010
  15. Gimenez, E., Adam, J.M., Ivorra, S., Moragues, J.J. and Calderon, P.A. (2009), "Full-scale testing of axially loaded RC columns strengthened by steel angles and strips", Adv. Struct. Eng., 12(2),169 -181. https://doi.org/10.1260/136943309788251704
  16. Li, J., Gong, J.and Wang, L. (2009), "Seismic behavior of corrosion-damaged reinforced concrete columns strengthened using combined carbon fiber-reinforced polymer and steel jacket", Construct. Build. Mater., 23(7), 2653-2663. https://doi.org/10.1016/j.conbuildmat.2009.01.003
  17. Montuori, R.and Piluso, V. (2009), "Reinforced concrete columns strengthened with angles and battens subjected to eccentric load", Eng. Struct., 31(2), 539-550. https://doi.org/10.1016/j.engstruct.2008.10.005
  18. Park, R. and Paulay, T. (1975), Reinforced concrete structures, John Wiley & Sons publications, New York, NY, USA.
  19. Ramirez, J.L. (1996), "Ten concrete column repair methods", Construct. Build. Mater., 10(3), 195-202. https://doi.org/10.1016/0950-0618(95)00087-9
  20. Su, R.K.L. and Wang, L. (2012), "Axial strengthening of preloaded rectangular concrete columns by precambered steel plates", Eng. Struct., 38(5), 42-52. https://doi.org/10.1016/j.engstruct.2012.01.003
  21. Takeuti, R.A., de Hanai, J.B. and Mirmiran, A. (2008), "Preloaded RC columns strengthened with high-strength concrete jackets under uniaxial compression", Mater. Struct., 41(7), 1251-1262. https://doi.org/10.1617/s11527-007-9323-0
  22. Timoshenko, S.P. and Gere, J.M. (1961), Theory of elastic stability, Mcgraw-Hill, New York, NY, USA.
  23. Wang, L. and Su, R.K.L. (2012a), "Experimental investigation of preloaded RC columns strengthened with precambered steel plates under eccentric compression loading", Adv. Struct. Eng., 15(8), 1253-1264. https://doi.org/10.1260/1369-4332.15.8.1253
  24. Wang, L. and Su, R.K.L. (2012b), "Theoretical and experimental study of plate-strengthened concrete columns under eccentric compression loading", J. Struct. Eng. ASCE, 139(3), 350-359.
  25. Yang, K.H. and Ashour, A.F. (2007), "Tests of reinforced concrete short columns laterally strengthened with wire rope units and steel elements", Magazine Conc. Res., 59(8), 547-557. https://doi.org/10.1680/macr.2007.59.8.547
  26. Yang, K.H., Ashour, A.F. and Lee, E.T. (2009), "Axial behaviour of reinforced concrete short columns strengthened with wire rope and T-shaped steel plate units", Magazine Conc. Res., 61(2), 143-154. https://doi.org/10.1680/macr.2008.00016

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