Cyclic Performance Assessment of Rehabilitated Concrete Frames with Different Arrangement of FRP

Document Type : Research Paper

Authors

1 Msc, Faculty of Civil Engineering, University of Eyvanakey, Semnan, Iran

2 Assistant Professor, Department of Civil Engineering, University of Eyvanekey, Semnan, Iran

3 Bachelor Student in Civil Engineering, Faculty of Civil Engineering, University of Eyvanakey

4 Bachelor Student in Civil Engineering, Faculty of Civil Engineering, University of Garmsar

5 Department of Civil Engineering, Engineering Faculty, Mashhad Branch, Islamic Azad University, Mashhad, Iran

Abstract

In this study, FRP effects on cyclic and push over behavior of locally and globally rehabilitated concrete frames were investigated. ABAQUS software used for modeling of frames. At first a 3 story-2 bay concrete building was modeled under gravity and earthquake loadings and then one of its frames was chosen as the base frame of this research. In the second step the base frame was weaken and rehabilitation carried out using three kinds of FRP named carbon, glass and aramid to compensate the lack of capacity. Strengthening of frames was done in two types of local and global manner and in each type three kinds of FRP were used. Force-displacement curve and stress-strain counter were determined for all of the models. Results showed positive effects of FRP using in rehabilitation of concrete frames. In local rehabilitation, all FRP improved the both of loading capacity and ductility but carbon FRP compensated all lack of capacity that was imposed to the model. In global rehabilitation, all kinds of FRPs showed satisfying performance in improving capacity of concrete frames. At the end, local strengthening by carbon FRP was showed the best performance among the others and glass FRP was presented the optimum behavior in global strengthening.

Keywords

References

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New Approaches in Civil Engineering
Volume 4, Issue 2
September 2020
Pages 58-74

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