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Structural Engineering and Mechanics
  Volume 4, Number 3, May 1996, pages 257-276
DOI: http://dx.doi.org/10.12989/sem.1996.4.3.257
 


Numerical simulation of concrete slab-on-steel girder bridges with frictional contact
Lin JJ, Fafard M, Beaulieu D

 
Abstract
    In North America, a large number of concrete old slab-on-steel girder bridges, classified noncomposite, were built without any mechanic connections. The stablizing effect due to slab/girder interface contact and friction on the steel girders was totally neglected in practice. Experimental results indicate that this effect can lead to a significant underestimation of the load-carrying capacity of these bridges.

In this paper, the two major components-concrete slab and steel girders, are treat as two deformable bodies in contact. A finite element procedure with considering the effect of friction and contact for the analysis of concrete slab-on-steel girder bridges is presented. Tile interface friction phenomenon and finite element formulation are described using an updated configuration under large deformations to account for the influence of any possible kinematic motions on the interface boundary conditions. The constitutive model for frictional contact are considered as slip work-dependent to account for the irreversible nature of friction forces and degradation of interface shear resistance, The proposed procedure is further validated by experimental bridge models.
 
Key Words
    composite action, contact, degradation, finite element, friction
 
Address
Lin JJ, FORINTEK CANADA CORP,NATL WOOD PROD RES INST,VANCOUVER,BC,CANADA
UNIV LAVAL,DEPT CIVIL ENGN,QUEBEC CITY,PQ G1K 7P4,CANADA
 

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