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Machine Learning-Based Prediction Models for Punching Shear Strength of Fiber-Reinforced Polymer Reinforced Concrete Slabs Using a Gradient-Boosted Regression Tree

Articolo
Data di Pubblicazione:
2024
Abstract:
Fiber-reinforced polymers (FRPs) are increasingly being used as a composite material in concrete slabs due to their high strength-to-weight ratio and resistance to corrosion. However, FRP-reinforced concrete slabs, similar to traditional systems, are susceptible to punching shear failure, a critical design concern. Existing empirical models and design provisions for predicting the punching shear strength of FRP-reinforced concrete slabs often exhibit significant bias and dispersion. These errors highlight the need for more reliable predictive models. This study aims to develop gradient-boosted regression tree (GBRT) models to accurately predict the shear strength of FRP-reinforced concrete panels and to address the limitations of existing empirical models. A comprehensive database of 238 sets of experimental results for FRP-reinforced concrete slabs has been compiled from the literature. Different machine learning algorithms were considered, and the performance of GBRT models was evaluated against these algorithms. The dataset was divided into training and testing sets to verify the accuracy of the model. The results indicated that the GBRT model achieved the highest prediction accuracy, with root mean square error (RMSE) of 64.85, mean absolute error (MAE) of 42.89, and coefficient of determination (R2) of 0.955. Comparative analysis with existing experimental models showed that the GBRT model outperformed these traditional approaches. The SHapley Additive exPlanation (SHAP) method was used to interpret the GBRT model, providing insight into the contribution of each input variable to the prediction of punching shear strength. The analysis emphasized the importance of variables such as slab thickness, FRP reinforcement ratio, and critical section perimeter. This study demonstrates the effectiveness of the GBRT model in predicting the punching shear strength of FRP-reinforced concrete slabs with high accuracy. SHAP analysis elucidates key factors that influence model predictions and provides valuable insights for future research and design improvements.
Tipologia CRIS:
14.a.1 Articolo su rivista
Keywords:
fiber-reinforced polymer, flat slabs, gradient boosting regression tree, machine learning, punching shear capacity
Elenco autori:
Abood, E. A.; Abdallah, M. H.; Alsaadi, M.; Imran, H.; Bernardo, L. F. A.; De Domenico, D.; Henedy, S. N.
Autori di Ateneo:
DE DOMENICO Dario
Link alla scheda completa:
https://iris.unime.it/handle/11570/3312129
Link al Full Text:
https://iris.unime.it//retrieve/handle/11570/3312129/682216/materials-17-03964.pdf
Pubblicato in:
MATERIALS
Journal
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URL

https://www.mdpi.com/1996-1944/17/16/3964
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