DOI QR코드

DOI QR Code

Experimental study on flexural strength of modular composite profile beams

  • Ahn, Hyung-Joon (Department of Architectural Engineering, Kon-Kuk University) ;
  • Ryu, Soo-Hyun (Department of Architectural Engineering, Kon-Kuk University)
  • Received : 2006.06.20
  • Accepted : 2006.11.10
  • Published : 2007.02.25

Abstract

This study suggests modular composite profile beams, where the prefab concept is applied to existing composite profile beams. The prefab concept produces a beam of desired size having two types of profile: side module and bottom module. Module section will improve construction efforts because it offers several benefits : reduction of deflections due to creep and shrinkage, which might be found in existing composite profile beams; increase in span/depth ratio; and free prefabrication of any required beams. Based on the established analysis theory of composite profile beams, an analysis theory of modular composite profile beams was suggested, and analysis values were compared with experimental ones. The behavior of individual modules with increase of load was measured with a strain gauge, and the shear connection ratio between modules was analyzed by using the measured values. As a result of experiment, it was found that theoretical flexural strength on condition of full connection was 57%-80% by connection of modules for each specimen, and it is expected that flexural strength will approximate the theoretical levels through further module improvement.

Keywords

References

  1. Ahmed, M., Oehlers, D. J. and Bradford, M. A. (2000),"Retrofitting reinforced concrete beams by bolting steel plates to their sides. Part 1: Behavior and experiments", Struct. Eng. Mech., An Int. J., 10(3), 211-226. https://doi.org/10.12989/sem.2000.10.3.211
  2. Uy, Brian and Bradford, Andrew (1995),"Ductility of profile beams. Part 1: experimental study", ASCE J. Struct. Eng., 121(5), 876-882. https://doi.org/10.1061/(ASCE)0733-9445(1995)121:5(876)
  3. Uy, Brian and Bradford, Andrew (1995),"Ductility of profile beams. Part I: analytical study", ASCE J. Struct. Eng., 121(5), 883-889. https://doi.org/10.1061/(ASCE)0733-9445(1995)121:5(883)
  4. Hossain, K. M. Anwar and Wright, H. D. (2004),"Flexural and shear behavior of profiled double skin composite elements", Steel Compo. Struct., An Int. J., 4(2), 227-243. https://doi.org/10.12989/scs.2004.4.3.227
  5. Peng, Minglan and Shi, Zhifei (2004),"Interface characteristics of RC beams strengthened with FRP plate", Struct. Eng. Mech., An Int. J., 18(3), 315-330. https://doi.org/10.12989/sem.2004.18.3.315
  6. Oehlers, D. J. (1993),"Composite profile beams", ASCE J. Struct. Eng., 119(4), 1085-1100. https://doi.org/10.1061/(ASCE)0733-9445(1993)119:4(1085)
  7. Oehlers, D. J. Wright, H. D. and Burnet, M. J. (1994),"Flexural strength of profile beams", ASCE J. Struct. Eng., 120(2), 378-393. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:2(378)
  8. Oehlers, D. J. and Bradford, M. A. (1995), Composite Steel and Concrete Structural Members : Fundamental Behavior. Pergamon, UK.
  9. Oehlers, D. J., Ahmed, M., Nguyen, N. T. and Bradford, M. A. (1997),"Transverse and longitudinal partial interaction in composite bolted side-plated reinforced concrete beams", Struct. Eng. Mech., An Int. J., 5(5), 553-563. https://doi.org/10.12989/sem.1997.5.5.553
  10. Oehlers, D. J. and Bradford, M. A. (1999), Elementary Behavior of Composite Steel & Concrete Structural Members, Butterworth-Heinemann, UK.
  11. Oehlers, D. J., Nguyen, N. T. and Bradford, M. A. (2000),"Retrofitting by adhesive bonding steel plates to sides of R.C. beams. Part 1: Debonding of plates due to flexure", Struct. Eng. Mech., An. Int. J., 9(5), 491-503. https://doi.org/10.12989/sem.2000.9.5.491
  12. Oehlers, D. J., Nguyen, N. T. and Bradford, M. A. (2000),"Retrofitting by adhesive bonding steel plates to sides of R.C. beams. Part 2: Debonding of plates due to shear and design rules", Struct. Eng. Mech., An Int. J., 9(5), 505-518. https://doi.org/10.12989/sem.2000.9.5.505
  13. Oehlers, D. J., Ahmed, M., Nguyen, N. T. and Bradford, M. A. (2000),"Retrofitting reinforced concrete beams by bolting steel plates to their sides. Part 2: Transverse interaction and rigid plastic design", Struct. Eng. Mech., An Int. J., 10(3), 227-243. https://doi.org/10.12989/sem.2000.10.3.227
  14. Kim, S. H. and Aboutaha, R. S. (2004),"Ductility of carbon fiber-reinforced polymer (CFRP) strengthened reinforced concrete beams: Experimental investigation", Steel Compo. Struct., An Int. J., 4(5).
  15. Smith, S. T., Bradford, M. A. and Oehlers, D. J. (1999),"Local buckling of side-plated reinforced-concrete Beams. I : Theoretical Study", ASCE, J. Struct. Eng., 125(6), 622-634. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:6(622)
  16. Smith S.T., Bradford, M. A. and Oehlers, D. J. (1999)"Local buckling of side-plated reinforced-concrete Beams. II: Experimental Study", ASCE, J. Struct. Eng., 125(6), 635-643. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:6(635)
  17. Yi Wu, He, J. and Chen, H. (2006),"Behavior of box-shape steel reinforced concrete composite beam", Struct. Eng. Mech., An Int. J., 22(4), 419-432. https://doi.org/10.12989/sem.2006.22.4.419

Cited by

  1. Experimental study on mechanical performance of checkered steel-encased concrete composite beam vol.143, 2018, https://doi.org/10.1016/j.jcsr.2017.12.021
  2. Experimental study on flexural strength of reinforced modular composite profiled beams vol.8, pp.4, 2008, https://doi.org/10.12989/scs.2008.8.4.313
  3. Study on behavior of T-section modular composite profiled beams vol.10, pp.5, 2007, https://doi.org/10.12989/scs.2010.10.5.457
  4. Flexural behavior of cold-formed steel concrete composite beams vol.14, pp.2, 2007, https://doi.org/10.12989/scs.2013.14.2.105
  5. Investigation on the flexural behavior of an innovative U-shaped steel-concrete composite beam vol.34, pp.3, 2007, https://doi.org/10.12989/scs.2020.34.3.441