نشریه مهندسی عمران امیرکبیر

نشریه مهندسی عمران امیرکبیر

بررسی عملکرد دیوار برشی گهواره‌ای با قاب مهاربندی واگرا مجهز به لینک قائم برشی به روش طراحی بر اساس نیرو

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشکده مهندسی عمران، دانشگاه صنعتی شیراز، شیراز، ایران.
2 دانشکده مهندسی عمران، دانشگاه یاسوج، یاسوج، ایران.
3 دانشکده مهندسی عمران، دانشگاه آزاد، واحد شهر قدس، تهران، ایران
چکیده
در این پژوهش، یک سیستم ترکیبی شامل دیوار برشی گهواره‌ای و قاب مهاربندی واگرا با لینک قائم برشی به‌عنوان یک گزینه نوین باربر جانبی پیشنهاد و بررسی شده است. هدف، ارزیابی نحوه توزیع نیروی طراحی بین دو سیستم و تعیین سهم هر یک از برش پایه کل در ساختمان‌های ۱۰ طبقه است. جهت مشخص شدن تاثیر پارامتر توزیع نیرو طراحی در مدل‌ها، چهار مدل با درصدهای مختلفی از توزیع نیرو بین دهانه‌های بابر جانبی سیستم مدلسازی شده است. همچنین جهت مشخص نمودن میزان حساسیت رفتار نمونه‌ها به میزان کابل مورد استفاده در مدل‌ها، چهار مدل با مساحت‌های متفاوت سطح مقطع کابل در عین ثابت ماندن سایر مشخصات مدل‌ها، مورد بررسی و با مدلی که قاب مهاربندی واگرا برای 100% نیرو طراحی شده‌، مقایسه شده‌اند. روش طراحی برای سیستم پیشنهادی، روش نیرویی در نظر گرفته شده است. نتایج نشان داد با افزایش سهم دیوار برشی گهواره‌ای (۱۰٪ تا ۴۰٪)، بازگشت‌پذیری سیستم بهبود یافته ولی استهلاک انرژی کاهش می‌یابد. همچنین، افزایش سطح مقطع کابل از 300% به 1020% باعث افزایش سختی پس از تسلیم و ظرفیت نهایی شد، اما تأثیر قابل توجهی بر بازگشت‌پذیری یا مرکزگرایی نداشت. نوآوری این تحقیق، معرفی سیستمی ترکیبی با قابلیت همزمان اتلاف انرژی و برگشت‌پذیری لرزه‌ای است که می‌تواند به‌عنوان راهکاری کارآمد در طراحی لرزه‌ای ساختمان‌ها مطرح شود.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

5Evaluation of the Performance of Rocking Wall with Eccentrically Braced Frame with Vertical Link Based on the Force Design Method

نویسندگان English

Mehrdad Dorj 1
Mohammad gholami 2
Amirhosein Parvizi 3
1 student
2 yasouj university
3 Student
چکیده English

This study introduces a combined system of Rocking Shear Walls with Eccentrically Braced Frame with Vertical Link (RCSW-EBF). The aim of the study is to investigate the impact of the Force Design parameter (with different beta values) on the behavior of the RCSW-EBF system while keeping the cable area constant. Additionally, the study seeks to explore the effects of cable area on the behavior of the RCSW-EBF system while other characteristics remain unchanged. the 10-story frames are designed in SAP software, and the dimensions of the system sections are determined. These 10-story frames are then modeled in ABAQUS software, and their nonlinear behavior under pushover and cyclic analysis is determined. The finite element modeling has been done with Shell and Wire elements. The results of the cyclic analysis indicate that an increase in the percentage of Brace force (x%) leads to a corresponding increase in wasted energy and the coefficient of energy loss and reducing the design force of the Eccentrically Braced Frame's span and increasing the design force of the Rocking Wall with Concentrically Braced Frames' span led to a decrease in the cyclic diagrams of energy consumption. So, the energy consumption of the RCSW-EBF frame with the design forces of Braced Frame 70% and Rocking wall 30%, Braced frame 80% and Rocking wall 20%, and Braced Frame 90% and Rocking Wall 10% is respectively 12%, 28% and 44% more than the system with the design force of Braced Frame 60% and Rocking Wall 40%.

کلیدواژه‌ها English

Brace Frame
Vertical Link
Rocking Wall
Self-Centering Reparability
Force Based Design
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