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1- دانشگاه آزاد اسلامی واحد علوم و تحقیقات
چکیده:   (276 مشاهده)
در این مقاله کارایی یک مخزن خارجی به عنوان یک میراگر مایع تنظیم شده در کنترل پاسخ های دینامیکی سکوهای تک پایه دریایی تحت بارهای لرزه ای مورد بررسی قرار گرفته است. استفاده از این نوع مخزن باعث میشود تا نیروهای هیدرودینامیکی ناشی از حرکت سطح آب در مخزن به عنوان نیروهای مقاوم در برابر جابجایی سازه عمل کنند. در این تحقیق، با استفاده از نرم افزار اجزای محدود ANSYS و مدول Transient Analysis سازه ای تک پایه با ابعادی متناسب با نمونه های موجود به همراه یک مخزن خارجی به عنوان میراگر در بالاترین تراز ممکن، مدلسازی شده و سپس با استفاده از روش تاریخچه زمانی تحت سوابق سه زلزله برای بارهای لرزه ای، تجزیه و تحلیل شد. جهت مدلسازی مخزن از المان Solid85 و برای سیال درون آن از المان Fluid80 استفاده شده است. تغییر مکان بالای سکو در حالت با و بدون میراگر مقایسه گردید که نتایج نشان از کاهش جابجایی سازه حتی بیش از پنجاه درصد بسته به شتابنگاشت زلزله و محتوای فرکانسی دارد.

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نوع مطالعه: مقاله پژوهشي | موضوع مقاله: سازه های فراساحلی
دریافت: 1400/9/22 | پذیرش: 1401/2/26

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