مطالعه‌ای بر مشخصات فیوزهای پیرامونی استفاده شده در ساختمان‌های تعمیرپذیر فلزی با حرکت الاکلنگی

نوع مقاله : Articles

نویسندگان

1 گروه مهندسی سازه، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران

2 پژوهشکده مهندسی سازه، پژوهشگاه بین‌المللی زلزله‌شناسی و مهندسی زلزله، تهران، ایران

چکیده

از فیوزهای سازه­ای و سیستم الاکلنگی جهت کاهش پاسخ ساختمان در مقابل زلزله و هدایت آسیب استفاده می­شود. در این سیستم ستون‌های ساختمان حذف شده و به‌جای آنها در مرکز از یک تکیه­گاه و در پیرامون ساختمان از فیوزهای سازه­ای غیرخطی استفاده می­شود. هدف اصلی از ایجاد این سیستم این است که هنگام زلزله اجزای سازه­ای به‌صورت الاستیک باقی مانده و تغییر شکل‌های غیرخطی در فیوز­های سازه­ای پیرامونی به وجود ­­آید که پس از زلزله می­توان در مدت‌زمان کوتاه و با هزینه کمتری نسبت به هزینه ساخت کل ساختمان، فیوزهای آسیب‌دیده را تعویض و از ساختمان بهره­برداری نمود. در این تحقیق مشخصات نوعی از فیوز سازه­ای مورد بررسی قرار گرفته و کاربرد آن در ساختمان با سیستم الاکلنگی تحت اثر زلزله حوزه نزدیک مورد مطالعه قرار می­گیرد. به‌طوری‌که حداکثر شتاب مطلق بام و برش پایه به‌طور چشمگیری کاهش می­یابد، اما میزان تغییر مکان جانبی نسبی طبقات در برخی از ساختمان‌ها افزایش یافته اما از حد مجاز کمتر است.

کلیدواژه‌ها


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