Seismic vulnerability reduction: numerical modeling of FRP reinforcement using multifiber beams elements

Cédric Desprez (1) , Saber El Arem (1) , Panagiotis Kotronis (2) , Jacky Mazars (1)

1 3S - Laboratoire Sols, Solides, Structures
2 GeM - Institut de Recherche en Génie Civil et Mécanique

This paper presents a simplified modeling strategy for reproducing the behavior of beam-column structures reinforced with Polymer Reinforced Fibers (FRP). A 1D concrete constitutive model has been recently proposed, suitable for both monotonic and cycling loadings. The model is inspired on two well-known concrete laws, one based on damage mechanics theory (La Borderie concrete damage model) and one based on experimental studies (Eid & Paultre's confined concrete model). Spatial discretization is done using multifiber Timoshenko beam elements. Validation of the strategy is provided using two case studies: a retrofitted bridge pier and a vulnerability analysis on an existing building.

Mots clés: retrofitting; damage mechanics; concrete; vulnerability; FRP; seismic loading

Domaines: Mécanique [physics.med-ph]; Matériaux

Cédric Desprez, Saber El Arem, Panagiotis Kotronis, Jacky Mazars. Seismic vulnerability reduction: numerical modeling of FRP reinforcement using multifiber beams elements. Provence 2009: Seismic risk in moderate seismicity area: from hazard to vulnerability, Jul 2009, Aix en Provence, France. ⟨hal-01008877⟩