Behaviour of an Orthotropic Bridge Deck with a UHPFRC Topping Layer
MARCHAND ; GOMES ; DIENG ; BABY ; RENAUD ; MASSOTTE ; ESTIVIN ; BILLO ; BAZIN ; LAPEYRERE ; SIEGERT ; TOUTLEMONDE
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
MARCHAND ; GOMES ; DIENG ; BABY ; RENAUD ; MASSOTTE ; ESTIVIN ; BILLO ; BAZIN ; LAPEYRERE ; SIEGERT ; TOUTLEMONDE
Résumé / Abstract
In the frame of the French national R&D project Orthoplus, an experimental program has been carried out to assess the influence of a UHPFRC topping layer on the behaviour of orthotropic decks and their fatigue resistance. This project aims at improving the design rules for orthotropic decks and developing a UHPFRC-based innovative solution to improve the durability. Bendings tests were carried out on four specimens, consisting in a realistic steel orthotropic deck model, 2.4 x 4m, with different types and thicknesses of topping layers: traditional bituminous concrete, thin layer of UHPFRC or no topping layer. The load application has been chosen as representative of real situations and of idealised cases considered in design codes. The loads were first applied through static tests with different configurations in accordance with Eurocode 1 and then through a fatigue test representative of traffic loads during bridge lifespan.
