Steel and Composite Structures

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Loading capacity of simply supported composite slim beam with deep deck

  • Shi, Yongjiu (Department of Civil Engineering, the Key Laboratory of Structural Engineering and Vibration of China Education Ministry, Tsinghua University) ;
  • Yang, Lu (Department of Civil Engineering, the Key Laboratory of Structural Engineering and Vibration of China Education Ministry, Tsinghua University) ;
  • Wang, Yuanqing (Department of Civil Engineering, the Key Laboratory of Structural Engineering and Vibration of China Education Ministry, Tsinghua University) ;
  • Li, Qiuzhe (Department of Civil Engineering, the Key Laboratory of Structural Engineering and Vibration of China Education Ministry, Tsinghua University)
  • Received : 2007.11.06
  • Accepted : 2009.05.04
  • Published : 2009.07.25
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Abstract

The composite slim beam has become popular throughout Europe in recent years and has also been used on some projects in China. With its steel section encased in a concrete slab, the steel-concrete composite slim beam can provide the floor construction with minimum depth and high fire resistance. However, the design method of the T-shape steel-concrete composite beam is no longer applicable to the composite slim beam with deep deck for its special construction, of which the present design models are not available but mainly depend on experiences. The elevation of the flexural stiffness and bending capacity of composite slim beams with deep deck is rather complicated, because the influences of many factors should be taken into account, such as the variable section dimensions, development of cracks and non-linear characteristics of concrete, etc. In this paper, experimental investigations have been conducted into the flexural behavior of two specimens of simply supported composite slim beam with deep deck. The emphases were laid on the bonding force on the interface between steel beam and concrete, the stress distribution of beam section, the flexural stiffness and bending capacity of the composite beams. Based on the experimental results, the reduction factor of equivalent stress distribution in concrete flange is suggested, and the calculation method of flexural stiffness and bending capacity of simply supported slim beams are proposed.

Keywords

References

  1. Bailey, C.G. (1999), "The behaviour of asymmetric slim floor steel beams in fire", J. Constr. Steel Res., 50, 235-257. https://doi.org/10.1016/S0143-974X(98)00247-8
  2. Bailey, C.G. (2003), "Large scale fire test on a composite slim-floor system", Steel Compos. Struct., 3(3), 153-168. https://doi.org/10.12989/scs.2003.3.3.153
  3. Bernuzzi, C., Gadotti, F. and Zandonini, R. (1995), "Semi-continuity in slim floor steel-concrete composite systems", Proc. of the 1995 1st European Conf. on Steel Structures, EUROSTEEL95, Athens, May.
  4. Borgogno, W. and Fontana, M. (1998), "Fire safety of slim floor composite slabs with precast prestressed hollow core elements", Stahlbau, 67(10), 776-784. https://doi.org/10.1002/stab.199802730
  5. Borgogno, W. and Fontana, M. (2000), "Structural behaviour of slim floor slabs with prestressed hollow core elements at room temperature and in fire", Proc. of the Conf.: Composite Construction in Steel and Concrete IV, Banff, May-Jun, 768-779.
  6. Chen, Q., Shi, Y.J., Wang, Y.Q., Chen, H. and Zhang, Y. (2002), "Structural analysis on light steel frame with steel-concrete composite slim beam", Building Structures, 32(2), 17-20.
  7. Hicks, S., Lawson, R.M. and Lam, D. (2006), "Design considerations for composite beams using precast concrete slabs", Composite Construction in Steel and Concrete V - Proc. of the 5th Int. Conf., Mpumalanga, Jul, 190-201.
  8. Hicks, S.J. and Lawson, R.M. (2003), Design of composite beams using precast concrete slabs, SCI Publication 287, The Steel Construction Institute, Ascot.
  9. Lange, J. (2006), "Design of edge beams in slim floors using precast hollow core slabs", Composite Construction in Steel and Concrete V - Proc. of the 5th Int. Conf., Mpumalanga, Jul, 260-269.
  10. Lawson, R.M., Bode, H., Brekelmans, J.W.P.M., Wright, P.J. and Mullet, D.L. (1999), "Slimflor and slimdek construction: European developments", Struct. Eng., 77(8), 28-32.
  11. Lawson, R.M., Mullett, D.L. and Rackham, J.W. (1998), "Design of Asymmetric Slimflor Beams", Proc. of the 1998 2nd World Conf. on Steel in Construction, San Sebastian, May.
  12. Lu, X.H. and Makelainen, P. (1995), "Strength and Stiffness of Composite Slim Floor Beams", Proc. of the 4st Pacific Structural Steel Conf., Singapore 95, Singapore, 93-100.
  13. Lu, X.H. and Makelainen, P. (1995), "Parametric Studies on Steel-concrete Composite Beams in Slim Floors", Proc. of the 1st European Conf. on Steel Structures, EUROSTEEL95, Athens, May, pp.18-20.
  14. Lu, X.T. and Zhang, S.M. (2005), "Analysis of the temperature distribution in composite slim floor beams subjected to fires", Journal of Harbin Institute of Technology, 37(2), 446-450.
  15. Lu, X.T. and Zhang, S.M. (2005), "Numerical analysis of composite slim floor beams in fire", Journal of Harbin Institute of Technology, 37(2), 442-445.
  16. Ma, Z.C. and Makelainen, P. (2006), "Structural behaviour of composite slim floor frames in fire conditions", J. Constr. Steel Res., 62, 12821289. https://doi.org/10.1016/j.jcsr.2006.04.026
  17. Makelainen, P. and Ma, Z.C. (2000), "Fire resistance of composite slim floor beams", J. Constr. Steel Res., 54, 345-363. https://doi.org/10.1016/S0143-974X(99)00059-0
  18. Malaska, M. (2000), "Behavior of a Semi-continuous Beam-column Connection for Composite Slim floors", PhD Thesis, Helsinki University of Technology, Helsinki, Finland.
  19. Queiroz, G. and De Paula, F.A. (2000), "Calibration of a FE model for the analysis of slim composite floors", Proc. - Annual Technical Session, Structural Stability Research Council, Memphis, Jul, 288-300.
  20. Sha, W. (2001), "Fire resistance of protected asymmetric slim floor beams", Proc. of the Eighth Int. Conf. on Civil and Structural Engineering Computing, Vienna, Austria, Sept., 167-168
  21. Sha, W. (2001), "Fire resistance of slim floors protected using intumescent coatings", Proc. of the Eighth Int. Conf. on Civil and Structural Engineering Computing, Vienna, Austria, Sept., 163-164.
  22. Yang, L., Shi, Y.J., Wang, Y.Q., et al. (2006), "Analysis of effective width of simply supported composite slim floor", 9th Int. Symposium on Structural Engineering for Young Experts, Fuzhou, Aug, 398-403.
  23. Zandonini, R., Gadotti, F. and Fedrizzi, E. (2003), "Composite steel-concrete systems with slim floor beams: structural performance and design considerations", Advances in Structures, ASSCCA 03, Sydney, Jun, 1-2, 35-44.

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  2. Nonlinear analysis of composite beams with concrete-encased steel truss vol.91, 2013, https://doi.org/10.1016/j.jcsr.2013.08.011