عملکرد لرزه‌ای قاب خمشی بهسازی شده با دیوار برشی فولادی با در نظر گرفتن عدم قطعیّت‌های سازه‌ای

مهندسی عمران فردوسی

مقاله 6، دوره 32، شماره 4 - شماره پیاپی 28، آبان 1398، صفحه 87-104   

نوع مقاله: پژوهشی

شناسه دیجیتال (DOI): 10.22067/.v32i4.78335

نویسندگان

مهدیه مداحی¹؛ محسن گرامی^{* 2}؛ حسین نادرپور¹

¹سمنان

²دانشگاه سمنان دانشکده مهندسی عمران

چکیده

در مهندسی لرزه‌ای مبتنی بر عملکرد، وجود محافظه‌کاری معیارهای پذیرش باعث افزایش هزینه‌های بهسازی شده است. در نظر گرفتن عدم قطعیّت‌ها می‌تواند باعث کاهش محافظه‌کاری‌ها و هزینه‌های بهسازی گردد. در این مطالعه، به بحث قابلیّت اعتماد سازۀ بهسازی شده با دیوار برشی فولادی پرداخته و مطالعه شاخص قابلیّت اعتماد نسبت به متغیرهای احتمالاتی صورت گرفته است. سازۀ مورد مطالعه قاب خمشی فولادی نه طبقه است که قبل و بعد از بهسازی تحت تحلیل دینامیکی افزایشی قرارگرفته است. نتایج نشان داد که تنش تسلیم دیوار برشی فولادی نسبت به سایر متغیرهای احتمالاتی بیشترین تأثیر را بر روی پاسخ سازه دارد. بر اساس نتایج، بهسازی سازه باعث کاهش احتمال شکست گردیده و با در نظر گرفتن عدم قطعیّت‌ها در سازۀ بهسازی شده احتمال شکست افزایش‌یافته و درنتیجه محافظه‌کاری موجود کاهش‌یافته است.

کلیدواژه‌ها

بهسازی؛ عدم‌قطعیت؛ قابلیت اعتماد؛ منحنی شکنندگی

سایر فایل های مرتبط با مقاله

6- gerami.pdf

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