Schaumann, EVallée, TKeller, T2009-06-222009-06-222009-06-22200910.14359/56314https://infoscience.epfl.ch/handle/20.500.14299/40748WOS:000262916400005This paper presents a model to predict the shear resistance of the unreinforced lightweight concrete core of a recently developed hybrid sandwich concept for bridge decks. The sandwich skins consist of a fiber-reinforced polymer (FRP) composite sheet for the tensile skin and a thin layer of high-strength concrete as a compression skin. The model uses a fracture mechanics approach and considers the shear force transmitted in the fracture process zone where a tensile load transmission through an initiating crack is still possible. To verify the modeling results, experiments on 12 sandwich beams were carried out. In contrast to the Eurocode 2 model for shear resistance prediction, the proposed model demonstrated a good agreement to experimental results and highlighted the importance of considering not only the static strength, but also fracture mechanics properties such as the characteristic length.bridge deckfracture mechanicslightweight concreteshear strengthstructural analysisBridge DeckHybrid Frptext::journal::journal article::research article