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Efficient 1D model for blind assessment of existing bridges : simulation of a full scale loading test and comparison with higher order continuum models
Santos Ferreira, Denise Carina; Bairán García, Jesús Miguel; Marí Bernat, Antonio Ricardo
Universitat Politècnica de Catalunya. Departament d'Enginyeria de la Construcció; Universitat Politècnica de Catalunya. TE - Tecnologia d'Estructures
Assessing the structural performance of existing concrete bridges is nowadays a major task. Nonlinear finite element (FE) analysis can quantify their capacity, evaluate strengthening interventions and prevent premature dismantle. However, this technique, mainly performed with 2D/3D FE, is seldom used at true scale due to the great complexity and computational costs involved. In this paper, the loading test of a strengthened concrete bridge in Sweden (Örnsköldsvik) is simulated using a 1D model. The bridge failed in combination of shear–bending–torsion triggered by fibre-reinforced polymer bond failure. Consecutive levels of refinement of the 1D model are presented and available results from higher order models are compared. The study of the structural response involved comparing displacements, strains, cracking patterns and failure mechanisms. The demonstrated robustness and efficiency of the proposed model makes it adequate for blind assessments of existing bridges.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures
Bridges -- Design and construction -- Mathematical models
bridge assessment
full-scale test
nonlinear finite element analysis
fibre beam model
shear
fibre-reinforced polymer
Ponts -- Disseny i construcció -- Modles matemàtics
info:eu-repo/semantics/publishedVersion
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