Steel and Composite Structures

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Failure mechanisms of externally prestressed composite beams with partial shear connection

  • Dall'Asta, A. (PROCAM, University of Camerino, Viale della Rimembranza) ;
  • Dezi, L. (Institute of Structural Engineering, University of Ancona) ;
  • Leoni, G. (Institute of Structural Engineering, University of Ancona)
  • Received : 2002.04.16
  • Accepted : 2002.08.16
  • Published : 2002.10.25
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Abstract

This paper proposes a model for analysing the non-linear behaviour of steel concrete composite beams prestressed by external slipping cables, taking into account the deformability of the interface shear connection. By assuming a suitable admissible displacement field for the composite beam, the balance condition is obtained by the virtual work principle. The solution is numerically achieved by approximating the unknown displacement functions as series of shape functions according to the Ritz method. The model is applied to real cases by showing the consequences of different connection levels between the concrete slab and the steel beam. Particular attention is focused on the limited ductility of the shear connection that may be the cause of premature failure of the composite girder.

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References

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  2. Closure to “Finite Element Model For Externally Prestressed Composite Beams with Deformable Connection” by Andrea Dall’Asta and Alessandro Zona vol.132, pp.12, 2006, https://doi.org/10.1061/(ASCE)0733-9445(2006)132:12(2037)