Modeling coupling beams made of or retrofitted with HPFRCCs

The general aim of this work is to define the framework for predictive modeling of coupling beams made of or retrofitted with HPFRCCs. This will be done by verifying the accuracy of different model-ing techniques at different modeling scales. In details two approaches will discussed: 1) a “material level based approach and 2) a “structural element based” one. The first provides a detailed description at the material level and the latter a reasonable accuracy at the level of global response under complex loading paths and higher efficiency in terms of time running. Finally, the second model will be used to predict the performance of poorly designed coupling beams reinforced with HPFRCC layer.