کنترل ارتعاشات لرزه‌ای سازه قاب خمشی خرپایی ویژه با استفاده از مهاربندهای کمانش‌تاب و میراگرهای جرمی تنظیم‌شده

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی عمران، دانشگاه علم و صنعت ایران، تهران، ایران. رایانامه

2 گروه پژوهشی تحلیل کمی و کیفی سیالات و محیط زیست، دانشکده مهندسی عمران، دانشگاه تفرش، تفرش، ایران.

10.22091/cer.2025.12392.1603

چکیده

کنترل ارتعاشات سازه‌ها با استفاده از روش‌های مختلف شامل کنترل غیرفعال، نیمه‌فعال، فعال و حالت ترکیبی امکان‏پذیر است. یکی از موثرترین روش‌های کنترل غیرفعال سازه‌ها، استفاده از میراگرهای جرمی تنظیم‌شده می‌باشد که در مطالعات اخیر به طور گسترده مورد توجه بوده است. در این مطالعه سازه 10‌ طبقه قاب خمشی خرپایی ویژه، در حالت بدون وجود مهاربند کمانش‌تاب، با وجود مهاربند کمانش‌تاب و همچنین افزودن میراگر جرمی تنظیم‌شده بر روی سازه دارای مهاربند کمانش‌تاب تحت اثر نیروی زلزله، با صرف‌نظر از تأثیر ساختگاه، مورد بررسی قرار گرفته است. در حالت استفاده از میراگرهای جرمی تنظیم‌شده، این میراگرها با نسبت جرمی دو درصد جرم سازه در شش نقطه بام سازه جانمایی و نصب شده‌اند. نتایج تحلیل‌های دینامیکی فزاینده عملکرد بسیار خوب میراگر جرمی و مهاربند کمانش‌تاب به صورت توأم را نشان می‌دهد. به گونه‏ای که مقدار بهبود نتایج نسبت به حالت بدون وجود مهاربند کمانش‌تاب در سازه 27.95 درصد می‌باشد. میزان تأثیر افزودن میراگر جرمی تنظیم‌شده به سازه در کاهش ارتعاشات سازه با حالت افزودن مهاربند کمانش‌تاب تقریبا برابر است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Seismic Vibration Control of the Special Truss Moment Frame (STMF) Using Buckling Restrained Braces and Tuned Mass Dampers

نویسندگان [English]

  • Sasan Mostaghimi Tehrani 1
  • Morteza Raissi Dehkordi 1
  • Elham Rajabi 2
1 School of Civil Engineering, Iran University of Science and Technology, Tehran, Iran.
2 Qualitative and Quantitative Analysis of Fluids and Environmental Research Group, Department of Civil Engineer-ing, Tafresh University, Tafresh, Iran.
چکیده [English]

Vibration control of structures includes passive, semi-active, active and hybrid control. Tuned mass dampers (TMDs) as one of the most effective methods for passive control of structures are in the focus of researches in recent years. In this paper, 10-story special truss moment frame (STMF), in the state without buckling restrained braces (BRBs), with the presence of BRBs, as well as the addition of TMDs on the structure equipped with BRBs, has been investigated under different earthquakes, regardless of the effect of the site. In this regard, TMDs with a mass ratio of 2% of the mass of the structure have been installed at six points on the roof of the structure. The results suggest the appropriate performance of TMDs and BRBs together. The amount of improvement in the results compared to the case without BRBs in structure is 27.95%. The effect of adding TMDs in reducing the vibrations of the structure is almost the same as the case with BRBs.

کلیدواژه‌ها [English]

  • Special truss moment frame
  • Buckling restrained brace
  • Tuned mass damper
  • Incremental dynamic analysis
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