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Research Article

Analytical study on seismic strengthening of existing reinforced concrete buildings by implementation of energy absorbers

Mehmet Cemal Geneş, Pari Yaseen

Civil Engineering Department, Eastern Mediterranean University, Famagusta, Cyprus via Mersin 10, Turkey

Keywords

Abstract


Nonlinear Time History;


Analysis;


Hysteretic;


Absorbers;


Energy;


Dissipating Devices;


Seismic Strengthening;


Seismic Risk

Retrofitting of reinforced concrete (RC) buildings is generally made by jacketing of columns and/or implementing shear walls. However, this method increases the building mass and requires foundation strengthening which is not easy to apply. Recently, strengthening by absorbing the applied energy to the building during an earthquake by energy absorbers has become popular. In this study, an analytical study of an energy dissipation system for seismic strengthening of existing RC buildings is presented. The study was conducted to investigate the implementation of an energy absorber to the bracing system of an existing building located in Antakya/Turkiye. One of the considerable challenges is to establish the optimal design to retrofit buildings against the effect of predicted earthquakes with minimal disturbance to the structure and residents. The proposed system aims to provide high protection of the structure during severe earthquakes by controlling the maximum inter-story drifts. The used system performs as a bilinear hysteretic device. To investigate the performance of the proposed design and configuration, nonlinear time-history analyses were carried out on an 8-Story building. The main parameters which are Displacement, Inter Story Drift Ratio, Acceleration, and Input Energy are studied according to the different configurations. The obtained results showed that the seismic responses of the strengthened structures were significantly higher than the original structures. The maximum displacement and drift reduction values of the strengthened building were between 70% to 80%, the maximum acceleration reduction values were between 4% to 20%, and the input energy levels decreased between about 64% and 70%.

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2023 Reviewer Awards:

Please, visit Reviewer Awards section for the winners of the 2022 RESM reviewer awards.



2023 Best Paper Award:

The paper authored by Ferzan Fidan, Naim Aslan, Mümin Mehmet Koç entitled as “Morpho-structural and compressive mechanical properties of graphene oxide reinforced hydroxyapatite scaffolds for bone tissue applications” is awarded.



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The paper authored by Ercan Işık, Ehsan Harirchian, Hüseyin Bilgin, Kirti Jadhav entitled as “The effect of material strength and discontinuity in RC structures according to different site-specific design spectra" is awarded.


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