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ارزیابی عملکرد لرزهای سیستمهای باربرجانبی در قابهای بتنآرمه بلندمرتبه تحت تحلیل استاتیکی غیرخطی | ||
| علوم و فناوریهای پدافند نوین | ||
| دوره 15، شماره 3 - شماره پیاپی 57، آبان 1403، صفحه 183-191 | ||
| نوع مقاله: مقاله پژوهشی | ||
| نویسندگان | ||
| سجاد محمدیان آبی* 1؛ فرزاد رئیسزاده2؛ صمد سهرابی3 | ||
| 1دکتری تخصصی،گروه سازه و زلزله، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران | ||
| 2دکتری تخصصی،,گروه مهندسی عمران، واحد بیضاء، دانشگاه آزاد اسلامی، بیضاء، ایران | ||
| 3کارشناس ارشد، دانشکده فنی و مهندسی، دانشگاه آزاد اسلامی واحد ملایر، ملایر ،ایران | ||
| تاریخ دریافت: 22 شهریور 1403، تاریخ بازنگری: 29 مهر 1403، تاریخ پذیرش: 13 آبان 1403 | ||
| چکیده | ||
| در سالهای اخیر، استفاده از سیستمهای مقاوم باربر جانبی در ساختمانهای بلندمرتبه بهطور چشمگیری افزایش یافته است. هدف این پژوهش، مقایسه عملکرد این سیستمها بهمنظور کاهش تغییرمکان، افزایش جذب انرژی و کاهش آسیبپذیری لرزهای است. بدین منظور، ۱۲ قاب بتنآرمه ۱۰ طبقه با ارتفاع طبقات سه متر، بهصورت منظم و دوبعدی در نرمافزار ETABS مدلسازی و تحلیل استاتیکی غیرخطی شدند. سیستمهای مورد بررسی شامل قاب خمشی (ویژه و متوسط)، سیستم دوگانه (ویژه و متوسط) و قاب ساختمانی ساده با دیوار برشی (ویژه و متوسط) بودند. قابها سه و پنج دهانه با طول پنج متر در نظر گرفته شدند. مقایسه براساس منحنی پوشاور و ظرفیت جذب انرژی انجام شد. نتایج نشان داد قاب خمشی ویژه با بیشترین شکلپذیری غیرالاستیک، بالاترین ظرفیت استهلاک انرژی (معیار ۱۰۰٪) را داراست؛ بهطوریکه حدود سه برابر سیستم دوگانه متوسط و ۲.۵ برابر قاب ساده با دیوار برشی متوسط ظرفیت دارد. این ویژگی، آن را ایمنترین گزینه در جلوگیری از فروریزش نهایی میسازد. در مقابل، سیستم دوگانه ویژه با حفظ ۷۶.۶۷٪ از ظرفیت جذب انرژی قاب خمشی ویژه و تأمین سختی کافی برای کنترل دریفت، توازنی بهینه میان سختی و شکلپذیری ارائه داده و بهعنوان کارآمدترین سیستم در مناطق با لرزهخیزی بالا پیشنهاد میشود. | ||
| کلیدواژهها | ||
| قاب بتنی؛ بار جانبی؛ آنالیز استاتیکی غیرخطی؛ ساختمان بلند مرتبه | ||
| عنوان مقاله [English] | ||
| Seismic Performance Evaluation of Lateral Load-Resisting Systems in High-Rise Reinforced Concrete Frames under Nonlinear Static Analysis | ||
| نویسندگان [English] | ||
| Sajjad Mohammadian Abi1؛ Farzad Raeiszadeh2؛ samad sohrabi3 | ||
| 1PhD,Department of civil engineering, SR.C., Islamic Azad University, Tehran, Iran | ||
| 2PhD, Department of Civil Engineering, Bayda Branch, Islamic Azad University, Bayda, Iran | ||
| 3Master of Science, Faculty of Technology and Engineering, Islamic Azad University, Malayer Branch, Malayer, Iran | ||
| چکیده [English] | ||
| In recent years, the construction of high-rise buildings using various lateral load-resisting systems has increased significantly. This study aims to evaluate and compare the seismic performance of reinforced concrete lateral load-resisting systems in tall buildings, focusing on minimizing lateral displacement, maximizing energy dissipation, and reducing seismic vulnerability. For this purpose, twelve 10-story reinforced concrete frames with a uniform story height of 3 meters were designed and analyzed using nonlinear static (pushover) analysis in ETABS. The considered systems include moment-resisting frames (special and intermediate), dual systems (special and intermediate), and ordinary moment frames combined with shear walls (special and intermediate). Each model consists of three- and five-bay frames with 5-meter spans. The comparison was based on capacity curves and energy dissipation capability. Results indicate that the special moment-resisting frame exhibits the highest inelastic ductility and energy dissipation capacity (taken as 100%), approximately three times greater than the intermediate dual system and 2.5 times that of the ordinary frame with intermediate shear walls. This superior performance makes the special moment-resisting frame the safest option in preventing global collapse. Meanwhile, the special dual system provides an optimal balance between stiffness and ductility, maintaining 76.67% of the energy dissipation capacity of the special moment frame while effectively controlling story drift. Therefore, it is recommended as the most practical and efficient system for high-seismicity regions. | ||
| کلیدواژهها [English] | ||
| Concrete frame, Lateral load, Nonlinear static analysis, Tall buildings | ||
| مراجع | ||
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[16] Abtahi, S. E.; Hosseini Lavasani, S. H. “Numerical Investigation of Seismic Performance of Unstiffened Slender Steel Shear Walls with Passive Defense Approach”; Sci. Q. J. Passive Def. 2022, 13. dor:1.20.1001.1.20086849.1401. 13.1.1.4 (In Persian). [17] Kachooee, A. “Investigating the Effect of Using a Seismic Isolation System to Improve the Behavior of Concrete Buildings with a Very High Degree of Importance and with a Double Side Bearing Resistant System”; Sci. J. Passive Def. 2024, 15, 61–72. dor:20.1001.1.20086849.1403.15.1.6.3(In Persian). [18] Emamzadeh, S. S.; Arbab Noush Abadi, A. “Progressive Collapse Analysis of Dual System ‘Special Moment Steel Frame with Special Concrete Shear Wall”; Sci. J. Passive Def. 2020, 11, 67–87. dor:20.1001.1.20086849.1399. 11.3.6.9 (In Persian). [19] [ahrami, S.; Pouri Rahim, A. A. “Technical Investigation of Prefabricated Concrete Defense Headquarters Resistant to Explosion Loads”; Sci. J. Passive Def. 2023, 14, 45–58, dor:20.1001.1.20086849.1402.14.3.2.6 (In Persian). [20] http://peer.berkeley.edu/nga/search.html [21] Topic Six National Building Regulations, Loads on Buildings, Fourth Edition, 2013. (In Persian) [22] Iran Concrete Regulations (ABA), Deputy of Technical Affairs, Office of Technical Affairs, Development of Criteria and Reduction of Earthquake Risk, 7th Edition, 2004. (In Persian) [23] Management and Planning Organization, Office of Technical Affairs and Development of Criteria and Reduction of Earthquake Risk, “Instructions for Seismic Improvement of [24] Dassault Systèmes, Abaqus 2020 Documentation, Providence, RI: Dassault Systèmes Simulia Corp, 2020. [25] Existing Buildings No. 360, 2006. (In Persian).
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آمار تعداد مشاهده مقاله: 31 تعداد دریافت فایل اصل مقاله: 19 |
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