Steel and Composite Structures

  • 제21권2호
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  • Pages.443-460
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  • 2016
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

An innovative experimental method to upgrade performance of external weak RC joints using fused steel prop plus sheets

  • Kheyroddin, Ali (Civil Engineering Faculty, Semnan University) ;
  • Khalili, Ali (Civil Engineering Faculty, Semnan University) ;
  • Emami, Ebrahim (Department of Civil Engineering, Payame Noor University) ;
  • Sharbatdar, Mohammad K. (Civil Engineering Faculty, Semnan University)
  • 투고 : 2014.12.24
  • 심사 : 2016.04.13
  • 발행 : 2016.06.10
⟨ 이전 논문 다음 논문 ⟩

초록

In this paper, the efficiency and effectiveness of two strengthening methods for upgrading behavior of the two external weak reinforced concrete (RC) beam-column joints were experimentally investigated under cyclic loading. Since two deficient external RC joints with reduced beam height and low strength concrete were strengthened using one-way steel prop and curbs with and without steel revival sheets on the beam. The cyclic performance of these strengthened specimens were compared with two another control external RC beam-column joints, one the standard RC joint that had not two mentioned deficiencies and another had both. Therefore, four half-scale RC joints were tested under cyclic loading.The experimental results showed that these innovative strengthening methods (RC joint with revival sheet specially) surmounted the deficiencies of weak RC joints and upgraded their performance and bearing capacity, stiffness degradation, energy absorption, up to those of standard RC joint. Also, results exhibited that the prop at joint acted as a fuse element due to adding steel revival sheets on the RC beam and showed better behavior than that of the specimen without steel revival sheets. In other words by stiffening of beam, the prop collected all damages due to cyclic loading at itself and acted as the first line of defense and prevented from sever damages at RC joint.

키워드

과제정보

연구 과제 주관 기관 : Semnan University

참고문헌

  1. Abdel-Wahed, O.H., ElNesr, O.M., ElGhandour, A.A. and Saad Eldin, W.A. (2005), "Behavior of reinforced concrete beam-column joint with FRP", Proceedings of the 11th International Colloquium on Structural and Geotechnical Engineering, Cairo, Egypt, May.
  2. Adam, J.M., Gimenez, E., Calderon, P.A., Pallares. F. and Ivorra, S. (2008), "Experimental study of beamcolumn joints in axially loaded RC columns strengthened by steel angles and strips", Steel Compos. Struct., Int. J., 8(4), 329-342. https://doi.org/10.12989/scs.2008.8.4.329
  3. Amziane, S., Chemrouk, M. and Attari, N. (2010), "Efficiency of beam-column joint strengthened by FRP laminates", Adv. Compos. Mater., 19(2), 83-171.
  4. Anania, L., Badala, A. and Failla, G. (2005), "Increasing the flexural performance of RC beams strengthened with CFRP materials", Construct. Build. Mater., 191(1), 55-61.
  5. Antonopoulos, C.P. and Triantafillou, T.C. (2003), "Experimental investigation of FRP strengthened RC beam-column joints", J. Compos. Construct., 7(2), 39-49. https://doi.org/10.1061/(ASCE)1090-0268(2003)7:1(39)
  6. Byong, Y. and Ronald, B. (2008), "Flexural behavior of reinforced concrete beams strengthened with CFRP sheets and epoxy mortar", J. Compos. Construct., 12(4), 387-395. https://doi.org/10.1061/(ASCE)1090-0268(2008)12:4(387)
  7. Ghobarah, A., Aziz, T.S. and Biddah, A. (1997), "Rehabilitation of reinforced concrete frame joints using corrugated steel jacketing", ACI Struct. J., 4(3), 283-294.
  8. Hadi, M.N.S. (2011), "Rehabilitating destructed reinforced concrete joints by steel straps", Construct. Build. Mater., 25(2), 851-858. https://doi.org/10.1016/j.conbuildmat.2010.06.102
  9. Hoffschild, T.E., Prion, H.G.L. and Cherry, S. (1995), "Seismic retrofit of beam-to-column joints with grouted steel tubes", Special Publication, 157, 397-425.
  10. Karayannis, C.G. and Sirkelis, G.M. (2008), "Strengthening and rehabilitation of RC beam-column joints using carbon-FRP jacketing and epoxy resin injection", J. Earthq. Eng. Struct. Dyn., 37(5), 769-790. https://doi.org/10.1002/eqe.785
  11. Karayannis, C.G., Chalioris, C.E. and Sirkelis, G.M. (2008), "Local retrofit of external RC beam column joints using thin RC jackets: an experimental study", J. Earthq. Eng. Struct. Dyn., 37(5), 727-746. https://doi.org/10.1002/eqe.783
  12. Khalili, A., Kheyroddin, A., Farahani, A. and Sharbatdar, M.K. (2015), "Nonlinear behavior of RC frames strengthened with steel curb and prop", Scientia Iran. Int. J. Sci. Technol., 22(5), 1712-1722.
  13. Li, Y., Lin, Y., Chen, C. and Lin, C. (2007), "Theoretical and experimental studies on repaired and rehabilitated reinforced concrete frames", Can. J. Civil Eng., 34(8), 923-933. https://doi.org/10.1139/l07-012
  14. Li, B., Lam, E.S.-S., Wu, B. and Wang, Y.Y. (2013), "Experimental investigation on reinforced concrete interior beam-column joints rehabilitated by ferrocement jackets", Eng. Struct., 56, 897-909. https://doi.org/10.1016/j.engstruct.2013.05.038
  15. Mahmoud, M.H., Afefy, H.M., Kassem, N.M. and Fawzy, T.M. (2014), "Strengthening of defected beam-column joints using CFRP", J. Adv. Res., 5(1), 67-77. https://doi.org/10.1016/j.jare.2012.11.007
  16. Pampanin, S., Christopoulos, C. and Chen, Th. (2006), "Development and validation of a metallic haunch seismic retrofit solution for existing under-designed RC frame buildings", J. Earthq. Eng. Struct. Dyn., 35, 1739-1766. https://doi.org/10.1002/eqe.600
  17. Pimanmas, A. and Chaimahawan, P. (2010), "Shear strength of beam-column joint with enlarged joint area", Eng. Struct., 32(9), 2529-2545. https://doi.org/10.1016/j.engstruct.2010.04.021
  18. Prota, A., Nanni, A., Manfredi, G. and Cosenza, E. (2001), "Selective upgrade of beam-column joints with composites", Proceedings of the International Conference on FRP Composites in Civil Engineering, Hong Kong, January, pp. 919-926.
  19. Shannag, M.J., Abu-Dyya, N. and Abu-Farsakh, G. (2005), "Lateral load response of high performance fiber reinforced concrete beam-column joints", Construct. Build. Mater., 19(7), 500-508. https://doi.org/10.1016/j.conbuildmat.2005.01.007
  20. Shafaei, J., Hosseini, A. and Marefat, M.S. (2014), "Seismic retrofit of external RC beam-column joints by joint enlargement using prestressed steel angles", Eng. Struct., 81, 265-288. https://doi.org/10.1016/j.engstruct.2014.10.006
  21. Shakya, K., Watanabe, K., Matsumoto, K. and Niwa, J. (2012), "Application of steel fibers in beam-column joints of rigid framed railway bridges to reduce longitudinal and shear rebars", Construct. Build. Mater., 27(1), 482-489. https://doi.org/10.1016/j.conbuildmat.2011.07.016
  22. Sharbatdar, M.K., Kheyroddin, A. and Emami, E. (2012a), "Cyclic performance of retrofitted reinforced concrete beam-column joints using steel prop", Construct. Build. Mater., 36, 287-294. https://doi.org/10.1016/j.conbuildmat.2012.04.115
  23. Sharbatdar, M.K., Kheyroddin, A. and Emami, E. (2012b), "Experimental seismic investigation of composite RC-diagonal steel prop joints", Proceedings of the 15th WCEE, Lisbon, Portugal, September.
  24. Tsonos, A.G. (2001a), "Seismic retrofit of R/C beam-to-column joints using local three-sided jackets", Euro. Earthq. Eng., 15(1), 48-64.
  25. Tsonos, A.G. (2002b), "Seismic repair of external R/C beam-to-column joints using two-sided and threesided jackets", Struct. Eng. Mech., Int. J., 13(1), 17-34. https://doi.org/10.12989/sem.2002.13.1.017
  26. Tsonos, A.D.G. (2010c), "Performance enhancement of R/C building columns and beam-column joints through shotcrete jacketing", Eng. Struct., 32(3), 726-740. https://doi.org/10.1016/j.engstruct.2009.12.001
  27. Wang, Y.C. and Hsu, K. (2009), "Shear strength of RC jacketed interior beam-column joints without horizontal shear reinforcement", ACI Struct. J., 106(2), 222-232.
  28. Yen, J.Y.R. and Chien, H.K. (2010), "Steel plates rehabilitated RC beam-column joints subjected to vertical cyclic loads", Construct. Build. Mater., 24(3), 332-339. https://doi.org/10.1016/j.conbuildmat.2009.08.029

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