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بررسی عملکرد لرزهای سیستم پشت قوی جهت به کارگیری در سازههای با ارتفاع زیاد در معرض زلزله حوزه دور | ||
| نشریه مهندسی عمران امیرکبیر | ||
| مقاله 2، دوره 57، شماره 9، آذر 1404، صفحه 1541-1570 اصل مقاله (2.52 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/ceej.2025.23119.8113 | ||
| نویسندگان | ||
| حسین بهزادنسب؛ احسان درویشان* ؛ رضا اسمعیل آبادی؛ حسن رضازاده | ||
| گروه مهندسی عمران، واحد رودهن، دانشگاه آزاد اسلامی، رودهن، ایران | ||
| چکیده | ||
| از آنجا که تعداد بسیار زیادی سازه مهاربندی فولادی وجود داشته و تعداد این سازهها رو به افزایش است، مطالعه وضعیت خسارت و عملکرد لرزهای سازههای مهاربندی تحت بارگذاریهای لرزهای یک مسأله مهم و حیاتی میباشد. امروزه سازههایی نیاز است که پس زلزله عملکرد خود را حفظ کرده و قادر به سرویس دهی بعد از زلزله باشد. اخیراً سیستمی به نام سیستم سازهای پشت قوی که ترکیبی از دو خرپای الاستیک و پلاستیک میباشند مطرح گردیده است سیستم سازهای SBS در واقع شامل ویژگیهای دو نوع سیستم مقاوم میباشد. این سیستم دهانه مهاربندی را به دو قسمت مختلف تقسیم میکند که یک بخش آن شامل یک خرپای قائم میباشد که به گونهای طراحی شده است که در حالت الاستیک باقی بماند و تغییر شکل یکنواخت در ارتفاع سازه را فراهم کند تا نیروها بهطور یکنواختتر در ارتفاع ساختمان توزیع شوند و همچنین شکلگیری مکانیسمهای طبقه نرم به تأخیر بیفتد. در معدود مطالعات صورت گرفته در خصوص سازههای مجهز به سیستم پشت قوی که در آنها از روش تحلیل استاتیکی غیر خطی فزاینده و تحلیل دینامیکی فزاینده استفاده شده و همچنین در هیچ یک از مطالعات مذکور، به طور مشخص سازههایی با ارتفاع زیاد مورد توجه قرار نگرفته است. از این رو در این تحقیق سازههای با ارتفاع زیاد مورد بررسی قرار میگیرند نتایج نشاندهنده آن است اگر المانهای خرپایی به خرپای الاستیک سیستم سازهای پشت قوی افزوده گردد عملکرد لرزهای این سیستم به طور قابل توجهی بهبود پیدا میکند. | ||
| کلیدواژهها | ||
| عملکرد لرزهای؛ سیستم پشت قوی؛ سازه با ارتفاع زیاد؛ خرپای الاستیک؛ خرپای پلاستیک | ||
| موضوعات | ||
| مهندسی زلزله | ||
| عنوان مقاله [English] | ||
| Investigating the Seismic Performance of Strong Back and Buckling Restrained Brace Systems for High-rise Structures in Far-Field Earthquakes | ||
| نویسندگان [English] | ||
| Hossein Behzadnasab؛ Ehsan Darvishan؛ Reza Esmaeilabadi؛ Hassan Rezazadeh | ||
| Department of Civil Engineering, RO.C., Islamic Azad University, Roudehen, Iran | ||
| چکیده [English] | ||
| With the increasing number of steel bracing structures, it is vital to study their damage status and seismic performance under seismic loading. We need structures that can retain their functionality after an earthquake and continue to serve. Recently, the strong back system (SBS) has been proposed. SBS is a combination of two elastic and plastic trusses that includes the features of two types of resistant systems. This system divides the bracing span into two different parts. One part consists of a vertical truss that remains elastic and provides a uniform deformation in the height of the structure to distribute forces evenly. The Soft Story Mechanism will be delayed, and the forces will be more evenly distributed at the height of the building. However, few studies have been conducted on the structures equipped with an SBS system, particularly high-rise structures. Therefore, this research examines high-rise structures and shows that if truss elements are added to the truss of the strong back system, the seismic performance of this system will significantly improve. | ||
| کلیدواژهها [English] | ||
| Seismic Performance, High-Rise Structures, Far-Field, Strong Back Structural System | ||
| مراجع | ||
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