کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6750431 1430683 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Storey-based stability of unbraced structural steel frames subjected to variable fire loading
ترجمه فارسی عنوان
پایداری پایدار بر روی قاب های فولادی ساختاری غیر قابل تحمل که در معرض بارگذاری متغیر آتش است
کلمات کلیدی
ثبات، فولاد، فریم، آتش، بهینه سازی، سناریو،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
Structural steel has poor fire resistance properties and often requires thermal protection. Passive thermal protection systems such as insulation for steel members by application of spray-applied fire-resistance materials (SFRM) on surfaces of structural steel members are expensive and represent a significant portion of building costs for steel structures. Also, design codes around the world are progressing toward performance-based approaches rather than prescriptive-based approaches in design for fire safety. However, it is difficult to account realistically for all probable fire scenarios, and the actual fire resistance of a structure may vary significantly depending on the nature of the fire, location of origin and characteristics of the building. A means to define and identify the maximum and minimum fire loading scenarios causing instability of a given structure is therefore desirable. Presented in this paper is a novel global optimization approach for determining the highest temperature, lowest temperature, most localized, and most distributed fire scenarios causing instability for an unbraced structural steel frame. The investigation assumes that the columns are fire protected but the beams are unprotected, and may be extended to apply in other configurations and framing materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Constructional Steel Research - Volume 147, August 2018, Pages 145-153
نویسندگان
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