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Research Article

The effect of material strength and discontinuity in RC structures according to different site-specific design spectra

Ercan Işık1, Ehsan Harirchian2, Hüseyin Bilgin3, Kirti Jadhav4

1Department of Civil Engineering, Bitlis Eren University, Bitlis, Turkey

2Institute of Structural Mechanics (ISM), Bauhaus-Universität Weimar, Weimar, Germany

3Department of Civil Engineering, Epoka University, Tirana, Albania

4Faculty of Civil Engineering , Bauhaus-Universität Weimar, Weimar, Germany



Structural analysis; 

Design spectra; 

Material strength;


Seismic-induced damages in reinforced-concrete (RC) buildings were primarily associated with materials’ low strength and poor properties. This study aims to investigate the seismic response of RC structures according to the different material’s strength and design spectra. Adaptive static pushover and eigenvalue analysis were performed for four different design spectra, five types of concrete, and two reinforcement grades. Four different design spectra were obtained by considering discrete geographical locations with different earthquake risks via the updated Turkish Earthquake Hazard Map 2018. Structural analysis was carried out for a sample RC building using these spectrum curves and material strengths. It has been observed that the structure becomes more rigid as the strength of concrete increases. This situation manifested itself with an increase in period values and a decrease in the stiffness values. Stiffness values of the building are independent of reinforcement. As the concrete strength decreases, the structure’s seismic capacity decreases while the displacement’s demand for predicted performance levels increases. Moreover, an increase in the tensile strength of reinforcements substantially increases the seismic capacity of the building. The study also determines that the site-specific design spectra obtained for different provinces are used in the analysis affects the demand displacements values considerably. The material differentiation between the stories in the building was also examined in this study. It can be a source in terms of how material discontinuity affects building performance.

© 2021 MIM Research Group. All rights reserved.


10/11/2021 Collaboration for IMSTEC2021: Editorial Board of our journal and Organizing Committee of the 6th International Conference on Material Science and Technology (IMSTEC2021) have agreed to collaborate. Extended versions of the selected papers from the conference will be published in our journal. For more see Events

15/03/2021 Collaboration for ICWET'21: Editorial Board of our journal and Organizing Committee of the6th International Conference on Welding Technologies and Exibition (ICWET’21) have agreed to collaborate. Extended versions of the selected papers from the conference will be published in our journal. For more see Events.

11/02/2021 Collaboration for ULIBTK 2021: Editorial Board of our journal and Organizing Committee of the 23. Congress on Thermal Science and Technology (ULIBTK 2021) have agreed to collaborate. Extended versions of the selected papers from the conference will be published in our journal. For more see Events.

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2020 Most Cited Paper Award:

The paper authored by Nelson Batista, Rui Melicio, Victor Mendes entitled as “Darrieus vertical axis wind turbines: methodology to study the self-start capabilities considering symmetric and asymmetric airfoils" is awarded the

2020 Best Paper Award:

The paper authored by Ahsen Ünal, Işıl Özer, Melek Erol Taygun, Sadriye Küçükbayrak entitled as “Fabrication and in-vitro evaluation of copper doped bioactive glass/polymer composite scaffolds for bone tissue engineering” is awarded the 


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