Novel Predictive Model of the Debonding Strength for Masonry Members Retrofitted with FRP

Iman Mansouri,Jong Hu,Ozgur Kisi

doi:10.3390/app6110337

Iman Mansouri, Jong Hu + Show 1 more

Open Access

https://doi.org/10.3390/app6110337

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Abstract

Strengthening of masonry members using externally bonded (EB) fiber-reinforced polymer (FRP) composites has become a famous structural strengthening method over the past decade due to the popular advantages of FRP composites, including their high strength-to-weight ratio and excellent corrosion resistance. In this study, gene expression programming (GEP), as a novel tool, has been used to predict the debonding strength of retrofitted masonry members. The predictions of the new debonding resistance model, as well as several other models, are evaluated by comparing their estimates with experimental results of a large test database. The results indicate that the new model has the best efficiency among the models examined and represents an improvement to other models. The root mean square errors (RMSE) of the best empirical Kashyap model in training and test data were, respectively, reduced by 51.7% and 41.3% using the GEP model in estimating debonding strength.

Highlights

IntroductionMasonry buildings have been utilized from time immemorial and, these days, because of aging, material degradation, and structural variations, members’ performances often need to be strengthened
Masonry buildings have been utilized from time immemorial and, these days, because of aging, material degradation, and structural variations, members’ performances often need to be strengthened.In this case, fiber reinforced polymer (FRP) composites in the form of bonded laminates attached to the outside can be a lasting strengthening solution provided that they comply with the cultural value of the building [1]
The main aim of this paper is to investigate the capability of gene expression programming (GEP) to predict the debonding resistance of fiber-reinforced polymer (FRP)-retrofitted masonry structures

Summary

Introduction

Masonry buildings have been utilized from time immemorial and, these days, because of aging, material degradation, and structural variations, members’ performances often need to be strengthened. Many experimental investigations have been performed with the purpose of studying the capability of using FRP in the strengthening of masonry structures (e.g., [4,16,17,18]). Introduced a simple model bond strength of FRP-to-concrete composite joints using GEP. Cevik [30] used several soft computing approaches for predicting strength strength enhancement of FRP confined concrete cylinders. Azamathulla and Ghani [35] used novel formulation for the strength of concrete under triaxial compression loading using GEP. To the knowledge of the authors, the applicability of the GEP approach for predicting the debonding force of FRP-retrofitted masonry elements has not been investigated and/or published in the literature. The main aim of this paper is to investigate the capability of GEP to predict the debonding resistance of FRP-retrofitted masonry structures. The accuracy of the GEP model is compared with experimental data and other existing models

Shear Strength Contribution of FRP

Overview of Genetic Programming

Results and Discussion

Conclusions