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Research Article

Seismic performance of masonry buildings in Iraq

Frak S. Alkenanee1Thaer M. S. Alrudaini2

1Department of School Buildings. Directorate General for Education of Dhi Qar, Dhi Qar, Iraq

2Department of Civil Engineering, College of Engineering, University of Basrah, Basrah, Iraq




Finite Elements;



Seismic Evaluation

Masonry buildings in seismic active regions experienced severe damages and collapses during earthquakes. Many researches were published concerning the seismic assessment of masonry buildings. Almost, all previous studies focused on historical buildings located in different regions in the world. This paper evaluates the seismic performance of ordinary residential masonry buildings located in three different regions in Iraq with various seismic intensities. Masonry buildings included houses, public and commercial buildings are common construction practice in Iraq. A three dimensional finite element modeling was adopted for the investigations in which nonlinear static pushover analyses were conducted to derive capacity curves of the building models. The finite element model was verified against experimental results presented in the literature. Capacity curves were compared with seismic capacity demands derived for each building model in both perpendicular principle axes. Two house building models with semi-regular and irregular plan layouts were considered in the investigations. The influence of the strength of the local clay bricks and the quality of the mortar on the seismic performance of the buildings was considered. Investigations have demonstrated that the plan layout and the strength of bricks and mortar are significantly influencing the seismic performance of the considered masonry buildings. For the considered models, the base shear capacity of the semi-regular house and that for the irregular house model have increased up to 233 % and 100 %, respectively by increasing strength of clay bricks from 9 MPa to 18 MPa. Using cement sand mortar with a compressive strength of 15.2 MPa rather than lime mortar that have compressive strength equal to 3.1 MPa contributes in increasing building shear capacity up to 20 %. Seismic vulnerability of masonry buildings in the considered cities with low to medium seismic intensities could be averted by using relatively high strength mortar and brick as well as adopting regular plans.

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01/01/2024 Best Paper Award: The winners of 2023 Best Paper Award of Research on Engineering Structures and Materials (RESM) are announced. More information can be found at Author Awards section.

01/01/2024 Most Cited Paper Award: The winners of 2023 Most Cited Paper Award of Research on Engineering Structures and Materials (RESM) are announced. More information can be found at Author Awards section.

01/01/2024 Reviewer Awards: The winners of 2023 reviewer awards of Research on Engineering Structures and Materials (RESM) are announced. More information can be found at Reviewer Awards section.

8/12/2023 Special Issue: Embark on a journey of innovation with the journal of Research on Engineering Structures and Materials as we unveil a compelling opportunity for contributors in our upcoming special issue, "Design, Analysis, and Manufacturing of Composite Vehicle Structures." Led by distinguished Guest Editors Liubov Gavva and Oleg Mitrofanov from Moscow Aviation Institute. For more info see the link.

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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.

2023 Most Cited Paper Award:

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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