Prediction cyclic shear strength degradation in RC
© 2024 Elias Merhi
Last July, our PhD student, Elias Merhi, attended the 18th World Conference on Earthquake Engineering that took place in Milan, Italy. During this conference, he presented the work elaborated in a paper on predicting cyclic shear strength degradation in RC using the General Crack Component Model
• Predicting cyclic shear strength degradation in RC using the General Crack Component Model (D. Ruggiero and E. Merhi), where the results of a parametric study were presented. The study focused on the degradation of shear strength in reinforced concrete (RC) under seismic loading. The authors utilized the General Crack Component Model (GCCM) to analyze how reversed cyclic loading affects the shear performance of RC, particularly showing that shear strength can decrease by over 20% even when longitudinal reinforcement doesn’t yield. They highlighted the relationship between crack kinematics, such as width and slip, and shear failure, proposing a simplified limit state based on crack opening angles and reinforcing ratios. The parametric study identified critical regimes in which cyclic loading cause the most significant strength reductions.