Hybrid Reinforced Concrete Sections with Steel and GFRP Bars: Interaction and Moment-Curvature Diagrams
Abstract
This folder contains the numerical data regarding the study of Hybrid Reinforced Concrete (HRC) Sections reinforced with Steel and Glass Fiber Reinforced Polymer (GFRP) Bars. The uploaded materials include the derivation of M-N Interaction Diagrams and the analysis of Moment-Curvature relationships, focusing on the combined mechanical behavior of traditional steel and GFRP reinforcement at Ultimate Limit State (ULS). A comprehensive parametric analysis was conducted to evaluate the influence of varying the relative reinforcement ratio between Steel and GFRP, as well as the effects of different normalized axial force levels. Furthermore, the study quantifies the structural performance of these HRC sections through an assessment of sectional ductility and energy dissipation capacity, providing insights into their viability for resilient structures. The material properties and design constraints were calculated following a dual regulatory framework: European Approach: Material characteristics were determined according to Eurocode 2 (for concrete and steel) and CNR-DT 203 (for FRP reinforcement). American Approach: Calculations were performed in accordance with ACI 318 and ACI 440 guidelines. This research was developed at the Polytechnic University of Turin in collaboration with Masera Engineering Group S.r.l.