بررسی رفتار لرزه ای قاب‌های بتن مسلح مجهز به دیوار برشی فولادی ومیراگر تسلیمی

چهری, مهسا; آقایاری, رضا

doi:10.22065/jsce.2025.489497.3574

بررسی رفتار لرزه ای قاب‌های بتن مسلح مجهز به دیوار برشی فولادی ومیراگر تسلیمی

نوع مقاله : علمی - پژوهشی

نویسندگان

مهسا چهری ¹

رضا آقایاری ²

¹ دانشجوی کارشناسی ارشد عمران-سازه ، دانشکده فنی و مهندسی، دانشگاه رازی، کرمانشاه، ایران.

² دانشیار گروه مهندسی عمران، دانشکده فنی و مهندسی، دانشگاه رازی، کرمانشاه، ایران.

10.22065/jsce.2025.489497.3574

چکیده

استفاده از ترکیب دیوار برشی و میراگر تسلیمی در سازه یکی از راهکارهای جلوگیری از افت ناگهانی ظرفیت باربری دیوارهای برشی فولادی به دلیل کمانش خارج از صفحه می‌باشد. دراین مطالعه رفتار لرزه ای قاب‌های بتن مسلح یک طبقه مجهز به دیوار برشی فولادی و میراگر تسلیمی مورد بررسی قرار گرفت. تحلیل مدل‌ها به صورت عددی و با استفاده از نرم افزار آباکوس انجام شد. برای صحت سنجی از نتایج مدل عددی از دو مدل آزمایشگاهی استفاده شد. سپس تحلیل‌های استاتیکی غیر خطی به منظور بررسی قاب بتنی مجهز به دیوار برشی فولادی و میراگر تسلیمی انجام گرفت. متغیر مدل‌ها شامل ضخامت دیوار برشی و تعداد میراگرهای تسلیمی در نظر گرفته شد. پس از انجام تحلیل‌ها نمودارهای غیر خطی نیرو-جابجایی استخراج شدند. سپس برای محاسبه اتلاف انرژی، سختی، مقاومت و شکل پذیری، نمودارهای دو خطی ساده شده استخراج شدند. برای تخمین مقاومت و سختی قاب بتنی مجهز به دیوار برشی و میراگر تسلیمی معادلاتی تقریبی پیشنهاد شد که مطابقت خوبی با نتایج عددی داشتند. نتایج نشان داد با افزایش تعداد میراگر و ضخامت دیوار برشی ، به صورت تقریبا خطی مقاومت و سختی قاب افزایش پیدا کرد. نتایج شکل پذیری و جذب انرژی نشان داد که اضافه شدن 4 عدد میراگر و در حالتی که ضخامت دیوار برشی برابر 2 میلی‌متر باشد باعث شد که شکل پذیری و جذب انرژی قاب 1.4 و2 برابر افزایش پیدا کند.

کلیدواژه‌ها

قاب‌ بتن مسلح

دیوار برشی فولادی

تحلیل عددی

میراگر تسلیمی

شکل پذیری

موضوعات

بهینه سازی

عنوان مقاله English

Investigating the seismic behavior of reinforced concrete frames equipped with steel shear walls and yielding dampers

نویسندگان English

Mahsa chehri ¹

Reza Aghayari ²

¹ Master's degree student in Civil Engineering, Faculty of Technology and Engineering, Razi University, Kermanshah, Iran.

² Associate Professor, Department of Civil Engineering, Faculty of Engineering and Technology, Razi University, Kermanshah, Iran.

چکیده English

Using a combination of shear wall and yield damper in a structure is one of the solutions to prevent sudden loss of bearing capacity of steel shear walls due to out-of-plane buckling. In this study, the seismic behavior of one-story reinforced concrete frames equipped with a steel shear wall and a yield damper was investigated. The models were analyzed numerically using Abaqus software. Two laboratory models were used to verify the results of the numerical model. Then, nonlinear static analyses were performed to investigate the concrete frame equipped with a steel shear wall and a yield damper. The model variables included the thickness of the shear wall and the number of yield dampers. After the analyses, nonlinear force-displacement diagrams were extracted. Then, simplified bilinear diagrams were extracted to calculate the energy dissipation, stiffness, strength, and ductility. Approximate equations were proposed to estimate the strength and stiffness of the concrete frame equipped with a shear wall and a yield damper, which were in good agreement with the numerical results. The results showed that with increasing the number of dampers and the thickness of the shear wall, the strength and stiffness of the frame increased almost linearly. The results of ductility and energy absorption showed that adding 4 dampers and a shear wall thickness of 2 mm increased the ductility and energy absorption of the frame by 1.4 and 2 times, respectively.

کلیدواژه‌ها English

Reinforced concrete frame

steel shear wall

numerical analysis

yield damper

ductility

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