Steel and Composite Structures

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Practical design guidlines for semi-continuous composite braced frames

  • Liew, J.Y. Richard (Department of Civil Engineering, National University of Singapore) ;
  • Looi, K.L. (Department of Civil Engineering, National University of Singapore) ;
  • Uy, Brian (School of Civil and Environmental Engineering, The University of New South Wales)
  • Published : 2001.06.25
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Abstract

This paper presents a simplified approach for the design of semi-continuous composite beams in braced frames, where specific attention is given to the effect of joint rotational stiffness. A simple composite beam model is proposed incorporating the effects of semi-rigid end connections and the nonprismatic properties of a 'cracked' steel-concrete beam. This beam model is extended to a sub-frame in which the restraining effects from the adjoining members are considered. Parametric studies are performed on several sub-frame models and the results are used to show that it is possible to correlate the amount of moment redistribution of semi-continuous beam within the sub-frame using an equivalent stiffness of the connection. Deflection equations are derived for semi-continuous composite beams subjected to various loading and parametric studies on beam vibrations are conducted. The proposed method may be applied using a simple computer or spreadsheet program.

Keywords

References

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Cited by

  1. Effects of partial shear connection on the behavior of semi-continuous composite beams vol.9, pp.4, 2009, https://doi.org/10.1007/BF03249504