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In-plane retrofitting of masonry structures by using GFRP strips in the bedjoints

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Abstract

Many unreinforced masonry structures were vulnerable in the past earthquakes and required retrofitting. The vulnerability of masonry structures could solve by providing numerous retrofitting approaches. However, the lack of appropriate methods, which could provide a solution for historical masonry structures with lesser effects on their façade, is demanding. In this study, two one-third scale masonry wall specimens made by clay bricks were tested under constant vertical and cyclic lateral loading. The specimens consist of an unreinforced wall and a wall retrofitted by GFRP strips. This study investigates the seismic behavior of unreinforced masonry walls before and after using GFRP strips on their bedjoints. To this purpose, various patterns of using GFRP strips have been studied by simplified micro-modeling. The results indicate that the proposed retrofitting technique could improve the lateral strength and stiffness of the unreinforced masonry wall with a considerable increase in the absorbed and dissipated energy and ductility content that changes the wall’s brittle failure to the ductile one. The proposed method could apply to the modern historical structures in which cement mortar has been used as an adhesive between the masonry layers.

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Data Availability

Since some outcomes of this study didn't publish in any other Journal, all data, models, and the results that support the findings of this study are available from the corresponding author upon reasonable request.

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  1. Faculty of Civil Engineering, Sahand University of Technology, Sahand New Town, Tabriz, Iran

    Elshan Ahani, Fathollah Osmanzadeh, Mir Naghi Mousavi & Behzad Rafezy

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  1. Elshan Ahani
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  2. Fathollah Osmanzadeh
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  3. Mir Naghi Mousavi
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  4. Behzad Rafezy
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All authors contributed to the study's conception and design. The logic related to assuming the required amount of the materials presented in the initial equations of the manuscript was performed by [E.A.]. The leading portion of the experimental studies, numerical modeling, and the initial draft of the empirical and numerical studies are carried out by [F.O.] and the cooperation of [M.N.M.] and [E.A.]. The modification and preparing the final tables, figures, and modified numerical studies have been done by [M.N.M.]. The paper preparation and adjustment were carried out by [B.R.] and [E.A.]. The early draft of the manuscript is prepared by [E.A.], and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Elshan Ahani.

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Ahani, E., Osmanzadeh, F., Mousavi, M.N. et al. In-plane retrofitting of masonry structures by using GFRP strips in the bedjoints. Bull Earthquake Eng 20, 4259–4288 (2022). https://doi.org/10.1007/s10518-022-01377-0

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