Enhancement of existing skew plate fly-overs
conference paper
In connection with renovation of a skew plate fly-over in concrete, nonlinear analyses have been performed, to assess the load carrying capacity before and after strengthening. The FEM-model was justified by linear analyses, where the influence of spatial resolution, shear and longitudinal curvature was studied. The tensile properties of reinforced concrete were represen-ted by a Tension Stiffening Model. The fly-over was strengthened by deep post-tensioned beams, which were casted onto the boundary of the bridge deck. The series of events was realistically simulated b_y a phased model-ling technique available in DIANA'. The analyses gave reliable predictions of the load carrying capacities. Concerning the belonging failure modes, the results showed that a brittle failure mode experienced for the existing fly-over, was prevented by the boundary beams in the strengthened fly-over.
Topics
TNO Identifier
329545
Source title
Proceedings 'FIP Symposium on Post-Tensioned Concrete Structures', The Concrete Society, GB (Volume 1)
Pages
556-568
Files
To receive the publication files, please send an e-mail request to TNO Repository.