Structural Engineering and Mechanics

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Investigation of the performance of externally collared RC short columns via aspect ratio

  • Dirikgil, Tamer (Department of Civil Engineering, Erciyes University) ;
  • Dugenci, Oguz (Department of Civil Engineering, Erciyes University)
  • Received : 2018.07.19
  • Accepted : 2018.08.17
  • Published : 2018.11.10
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Abstract

This paper presents the experimental study of nine pieces of reinforced concrete (RC) short columns. RC short columns were tested with cyclic loading with displacement control under the influence of constant axial load with load index of 0.2. Three columns within the tested nine columns are reference columns which have the details of the reinforcement given in the modern regulations and six of them are 150 mm and 100 mm externally collared columns. In addition to the parameter of the collar spacing, aspect ratio (as=2-1.5-1) is also considered as a parameter. The data obtained from experimental results have shown that externally collar contributes significantly to increasing the shear resistance of RC short columns and limiting the shear dominant behavior. It has been observed that the effectiveness of the externally collar increases with the decrease of the aspect ratio.

Keywords

Acknowledgement

Supported by : TUBITAK (The Scientific and Technological Research Council of Turkey)

References

  1. Bett, B.J., Klingner, R.E. and Jirsa, J.O. (1988), "Lateral load response of strengthened and repaired reinforced concrete columns", ACI Struct. J., 85(5), 499-508.
  2. Burns, N.H. and Siess, C.P. (1962), Load-Deformation Characteristics of Beam-Column Connections in Reinforced Concrete, Civil Engineering Studies, Structural Research Series No. 234, University of Illinois, U.S.A.
  3. Bikce, M. (2011), "How to reduce short column effects in buildings with reinforced concrete infill walls on basement floors", Struct. Eng. Mech., 38(2), 249-259. https://doi.org/10.12989/sem.2011.38.2.249
  4. Cagatay, I.H., Beklen, C., Mosalam, K.M. (2010), "Investigation of short column effect of RC buildings: Failure and prevention", Comput. Concrete, 7(6), 523-532. https://doi.org/10.12989/cac.2010.7.6.523
  5. Cai, G., Sun, Y., Takeuchi, T. and Zhang, J. (2015), "Proposal of a complete seismic shear strength model for circular concrete columns", Eng. Struct., 100, 399-409. https://doi.org/10.1016/j.engstruct.2015.06.032
  6. Chen, C.Y., Liu, K.C., Liu, Y.W. and Huang, W.J. (2010), "A case study of reinforced concrete short column under earthquake using experimental and theoretical investigations", Struct. Eng. Mech., 36(2), 197-206. https://doi.org/10.12989/sem.2010.36.2.197
  7. FEMA 274 (1997), NEHRP Commentary on the Guidelines for the Seismic Rehabilitation of Buildings, Applied Technology Council, Federal Emergency Management Agency, Washington D.C., U.S.A.
  8. FEMA 461 (2007), Interim Testing Protocols for Determining the Seismic Performance Characteristics of Structural and Nonstructural Components, Federal Emergency Management Agency, Washington D.C., U.S.A.
  9. Howser, R., Laskar, A. and Mo, Y.L. (2010), "Seismic interaction of flexural ductility and shear capacity in reinforced concrete columns", Struct. Eng. Mech., 35(5), 593-616. https://doi.org/10.12989/sem.2010.35.5.593
  10. Jin, L., Zhang, S., Li, D., Xu, H., Du, X. and Li, Z. (2017), "A combined experimental and numerical analysis on the seismic behavior of short reinforced concrete columns with different structural sizes and axial compression ratios", Int. J. Dam. Mech., 27(9), 1416-1447.
  11. Kocak, A. (2013), "The effect of short columns on the performance of existing buildings", Struct. Eng. Mech., 46(4), 505-518. https://doi.org/10.12989/sem.2013.46.4.505
  12. Liu, J., Driver, R.G. and Lubell, A.S. (2011), "Experimental study on short concrete columns with external steel collars", ACI Struct. J., 108(3), 360-369.
  13. Ou, Y.C. and Kurniawan, D.P. (2015), "Shear behavior of reinforced concrete columns with high-strength steel and concrete", ACI Struct. J., 112(1),35-46. https://doi.org/10.14359/51686822
  14. Park, H.G., Yu, E.J. and Choi, K.K. (2012), "Shear-strength degradation model for RC columns subjected to cyclic loading", Eng. Struct., 34(1), 187-197.
  15. Park, Y.J. and Ang, A.H.S. (1985), "Mechanistic seismic damage model for reinforced concrete", J. Struct. Eng., 111(4), 722-739 https://doi.org/10.1061/(ASCE)0733-9445(1985)111:4(722)
  16. Priestly, M.J.N., Seible, F., Xiao, Y. and Verma, R. (1994a), "Steel jacket retrofit of reinforced concrete bridge columns for enhanced shear strength-part 1: Theoretical considerations and test design", ACI Struct. J., 91(4), 394-404.
  17. Priestly, M.J.N., Seible, F., Xiao, Y. and Verma, R. (1994b), "Steel jacket retrofit of reinforced concrete bridge columns for enhanced shear strength-part 2: Test results and comparison with theory", ACI Struct. J., 91(5), 537-551.
  18. Priestley, M.J.N., Verma, R. and Xiao, Y. (1994), "Seismic shear strength of reinforced concrete columns", J. Struct. Eng., 120(8), 2310-2329. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:8(2310)
  19. Promis, G., Ferrier, E. and Hamelin, P. (2009), "External FRP retrofitting on reinforced concrete short columns for seismic strengthening", Compos. Struct. J., 88(3), 367-379.
  20. Pujol, S., Hanai, N., Ichinose, T. and Sozen, M.A. (2016), "Using Mohr-Coulomb criterion to estimate shear strength of reinforced concrete columns", ACI Struct. J., 113(3), 459-468. https://doi.org/10.14359/51688743
  21. Rodriguez, M. and Park, R. (1994), "Seismic load tests on reinforced concrete columns strengthened by jacketing", ACI Struct. J., 91(2), 150-159.
  22. Shin, M., Choi, Y.Y., Sun, C.H. and Kim, I.H. (2013), "Shear strength model for reinforced concrete rectangular hollow columns", Eng. Struct., 56, 958-969. https://doi.org/10.1016/j.engstruct.2013.06.015
  23. Xiao Y. and Wu, H. (2003), "Retrofit of reinforced concrete columns using partially stiffened steel jackets", ASCE J. Struct. Eng., 129(6), 725-732. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:6(725)
  24. Xiao, Y. and Martirossyan, A. (1998), "Seismic performance of high-strength concrete columns", J. Struct. Eng., 124(3), 241-251. https://doi.org/10.1061/(ASCE)0733-9445(1998)124:3(241)
  25. Zhou, X. and Liu, J. (2010), "Seismic behavior and shear strength of tubed RC short columns", J. Constr. Steel Res., 66(3), 385-397. https://doi.org/10.1016/j.jcsr.2009.10.011