بررسی رفتار قاب‌های مهاربندی همگرای ویژه فولادی تحت بار آتش پس از زلزله

مهندسی عمران فردوسی

مقاله 3، دوره 33، شماره 1 - شماره پیاپی 29، خرداد 1399، صفحه 31-48   

نوع مقاله: پژوهشی

شناسه دیجیتال (DOI): 10.22067/civil.v1i33.80567

نویسندگان

محمد رسول کفاش¹؛ عباس کرم الدین^{* 1}؛ محمد مقیمان²

¹گروه عمران، دانشکدۀ مهندسی، دانشگاه فردوسی مشهد

²گروه مکانیک، دانشکدۀ مهندسی، دانشگاه فردوسی مشهد

چکیده

وقوع آتش‌سوزی در اثر زمین‌لرزه یک مسئله مهم برای ساختمان‌ها در مناطق با لرزه‌خیزی متوسط تا زیاد است. در این مقاله به‌منظور ارائه بینش از اثرات آتش‌سوزی پس از زلزله در سازه‌های فولادی با استفاده از شبیه‌سازی اجزای محدود، رفتار قاب‌های مهاربندی همگرای ویژه فولادی در معرض این بارگذاری موردبررسی قرار می‌گیرد. شبیه‌سازی سازه تحت بار زلزله با استفاده از تحلیل تاریخچۀ زمانی غیرخطی انجام‌شده و با قرار دادن وضعیت سازه پس از زلزله به‌عنوان شرایط اولیه، تحلیل حرارتی‑مکانیکی با اعمال منحنی دما‑زمان بر روی اجزای در معرض آتش انجام‌شده است. نتایج تحلیل‌ها نشان داد که زمان مقاومت سازه در برابر حریق صرف‌نظر از مشخصه رکورد زلزله و سناریوهای آتش‌سوزی برای قاب‌های مهاربندی ویژه بسیار کوتاه بوده و اثرات ناشی زلزله قبلی بر روی آن ناچیز بوده است.

کلیدواژه‌ها

آتش‌سوزی پس از زلزله؛ تحلیل‌های متوالی؛ مقاومت آتش؛ قاب‌های مهاربندی؛ رفتار کلی

سایر فایل های مرتبط با مقاله

3-Kafash - Revised abstruct.pdf

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