Factors Influencing the Elastic Stiffness Factor in Reinforced Concrete Structures of Dual Systems Using Pushover Analysis
Stiffness is one of the most critical characteristics of a building, which is considered for public safety against earthquake loads and refers to displacement resistance. Buildings must be built with proper strength and stiffness. This study uses pushover analysis to evaluate the parameters influen...
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IIUM Press, International Islamic University Malaysia
2025-01-01
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| Series: | International Islamic University Malaysia Engineering Journal |
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| Online Access: | https://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/3321 |
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| author | Shahram Jkhsi Saya Abdullah Saber |
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Stiffness is one of the most critical characteristics of a building, which is considered for public safety against earthquake loads and refers to displacement resistance. Buildings must be built with proper strength and stiffness. This study uses pushover analysis to evaluate the parameters influencing the stiffness of the RC Dual system. The research used ASCE 7-10 and ACI 318-08 codes to design 24 two-dimensional buildings. Pushover analysis is conducted in the models using the ETABS software. Factors, including the number of stories, span length, thickness of the shear walls, and compressive strength, were considered while evaluating the stiffness and base shear of the designed buildings. The highest stiffness factor is (149.30) found in low-rise buildings with smaller span lengths, higher shear wall thickness, and higher compressive strength. In comparison, the lowest stiffness factor of (27.88) appeared in high-rise buildings with longer span lengths, lower shear wall thickness, and lower compressive strength. This study analyzed a dual system consisting of a moment-resisting frame and a shear wall. In further studies, other structural systems can be considered. By increasing the span length from 5.5m to 6.5m, the stiffness factor decreases by 8%. While by increasing shear wall thickness, the stiffness factor increased by 4.5%. Since every sample consists of two-dimensional dual systems, the influence of torsion is avoided. Future work should take torsional impacts into account since they have the potential to impact the design.
ABSTRAK: Untuk menyediakan keselamatan umum terhadap daya gempa, salah satu ciri bangunan yang paling penting ialah kekakuan, yang menerangkan tentangan terhadap anjakan. Bangunan mesti dibina dengan kekuatan dan kekakuan yang betul. Kajian ini menggunakan analisis pushover untuk menilai parameter yang mempengaruhi kekukuhan sistem RC Dual. Penyelidikan menggunakan kod ASCE 7-10 dan ACI 318-08 untuk mereka bentuk 24 bangunan dua dimensi. Analisis pushover dijalankan dalam model menggunakan perisian ETABS. Beberapa faktor, termasuk bilangan tingkat, panjang rentang, ketebalan dinding ricih, dan kekuatan mampatan, diambil kira semasa menilai kekukuhan dan ricih asas bangunan yang direka bentuk. Faktor kekukuhan tertinggi yang diukur dengan membahagikan ricih asas kepada anjakan (149.30) muncul di bangunan bertingkat rendah dengan panjang rentang yang lebih kecil, ketebalan dinding ricih yang lebih tinggi, dan kekuatan mampatan yang lebih tinggi. Manakala faktor kekakuan terendah (27.88) terdapat pada bangunan bertingkat tinggi dengan panjang rentang yang lebih panjang, ketebalan dinding ricih yang lebih rendah, dan kekuatan mampatan yang lebih rendah. Hanya kerangka tahan momen dengan dinding ricih yang dipanggil model (sistem dwi) telah dianalisis dalam kajian ini; sistem struktur lain boleh dipertimbangkan dalam kajian lanjut. Dengan meningkatkan panjang rentang daripada 5.5m kepada 6.5m, faktor kekakuan berkurangan sebanyak 8%. Manakala dengan meningkatkan ketebalan dinding ricih, faktor kekakuan meningkat sebanyak 4.5%. Memandangkan setiap sampel terdiri daripada sistem dwi dua dimensi, pengaruh kilasan dielakkan, kerja masa hadapan harus mengambil kira kesan kilasan kerana ia berpotensi memberi kesan kepada reka bentuk.
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| format | Article |
| id | doaj-art-db72508907af4a9e9a8683eed68f3ccc |
| institution | Kabale University |
| issn | 1511-788X 2289-7860 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IIUM Press, International Islamic University Malaysia |
| record_format | Article |
| series | International Islamic University Malaysia Engineering Journal |
| spelling | doaj-art-db72508907af4a9e9a8683eed68f3ccc2025-01-10T12:40:41ZengIIUM Press, International Islamic University MalaysiaInternational Islamic University Malaysia Engineering Journal1511-788X2289-78602025-01-0126110.31436/iiumej.v26i1.3321Factors Influencing the Elastic Stiffness Factor in Reinforced Concrete Structures of Dual Systems Using Pushover AnalysisShahram Jkhsi0Saya Abdullah Saber1https://orcid.org/0009-0000-5763-685XNear East UniversityNear East University Stiffness is one of the most critical characteristics of a building, which is considered for public safety against earthquake loads and refers to displacement resistance. Buildings must be built with proper strength and stiffness. This study uses pushover analysis to evaluate the parameters influencing the stiffness of the RC Dual system. The research used ASCE 7-10 and ACI 318-08 codes to design 24 two-dimensional buildings. Pushover analysis is conducted in the models using the ETABS software. Factors, including the number of stories, span length, thickness of the shear walls, and compressive strength, were considered while evaluating the stiffness and base shear of the designed buildings. The highest stiffness factor is (149.30) found in low-rise buildings with smaller span lengths, higher shear wall thickness, and higher compressive strength. In comparison, the lowest stiffness factor of (27.88) appeared in high-rise buildings with longer span lengths, lower shear wall thickness, and lower compressive strength. This study analyzed a dual system consisting of a moment-resisting frame and a shear wall. In further studies, other structural systems can be considered. By increasing the span length from 5.5m to 6.5m, the stiffness factor decreases by 8%. While by increasing shear wall thickness, the stiffness factor increased by 4.5%. Since every sample consists of two-dimensional dual systems, the influence of torsion is avoided. Future work should take torsional impacts into account since they have the potential to impact the design. ABSTRAK: Untuk menyediakan keselamatan umum terhadap daya gempa, salah satu ciri bangunan yang paling penting ialah kekakuan, yang menerangkan tentangan terhadap anjakan. Bangunan mesti dibina dengan kekuatan dan kekakuan yang betul. Kajian ini menggunakan analisis pushover untuk menilai parameter yang mempengaruhi kekukuhan sistem RC Dual. Penyelidikan menggunakan kod ASCE 7-10 dan ACI 318-08 untuk mereka bentuk 24 bangunan dua dimensi. Analisis pushover dijalankan dalam model menggunakan perisian ETABS. Beberapa faktor, termasuk bilangan tingkat, panjang rentang, ketebalan dinding ricih, dan kekuatan mampatan, diambil kira semasa menilai kekukuhan dan ricih asas bangunan yang direka bentuk. Faktor kekukuhan tertinggi yang diukur dengan membahagikan ricih asas kepada anjakan (149.30) muncul di bangunan bertingkat rendah dengan panjang rentang yang lebih kecil, ketebalan dinding ricih yang lebih tinggi, dan kekuatan mampatan yang lebih tinggi. Manakala faktor kekakuan terendah (27.88) terdapat pada bangunan bertingkat tinggi dengan panjang rentang yang lebih panjang, ketebalan dinding ricih yang lebih rendah, dan kekuatan mampatan yang lebih rendah. Hanya kerangka tahan momen dengan dinding ricih yang dipanggil model (sistem dwi) telah dianalisis dalam kajian ini; sistem struktur lain boleh dipertimbangkan dalam kajian lanjut. Dengan meningkatkan panjang rentang daripada 5.5m kepada 6.5m, faktor kekakuan berkurangan sebanyak 8%. Manakala dengan meningkatkan ketebalan dinding ricih, faktor kekakuan meningkat sebanyak 4.5%. Memandangkan setiap sampel terdiri daripada sistem dwi dua dimensi, pengaruh kilasan dielakkan, kerja masa hadapan harus mengambil kira kesan kilasan kerana ia berpotensi memberi kesan kepada reka bentuk. https://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/3321Reinforced concrete structurePushover analysisDual systemBase shearElastic stiffness factor |
| spellingShingle | Shahram Jkhsi Saya Abdullah Saber Factors Influencing the Elastic Stiffness Factor in Reinforced Concrete Structures of Dual Systems Using Pushover Analysis International Islamic University Malaysia Engineering Journal Reinforced concrete structure Pushover analysis Dual system Base shear Elastic stiffness factor |
| title | Factors Influencing the Elastic Stiffness Factor in Reinforced Concrete Structures of Dual Systems Using Pushover Analysis |
| title_full | Factors Influencing the Elastic Stiffness Factor in Reinforced Concrete Structures of Dual Systems Using Pushover Analysis |
| title_fullStr | Factors Influencing the Elastic Stiffness Factor in Reinforced Concrete Structures of Dual Systems Using Pushover Analysis |
| title_full_unstemmed | Factors Influencing the Elastic Stiffness Factor in Reinforced Concrete Structures of Dual Systems Using Pushover Analysis |
| title_short | Factors Influencing the Elastic Stiffness Factor in Reinforced Concrete Structures of Dual Systems Using Pushover Analysis |
| title_sort | factors influencing the elastic stiffness factor in reinforced concrete structures of dual systems using pushover analysis |
| topic | Reinforced concrete structure Pushover analysis Dual system Base shear Elastic stiffness factor |
| url | https://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/3321 |
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