مقاله انگلیسی رایگان در مورد مقاومت فشاری محوری ستون های فولادی S460 – الزویر ۲۰۱۸

مقاله انگلیسی رایگان در مورد مقاومت فشاری محوری ستون های فولادی S460 – الزویر ۲۰۱۸

 

مشخصات مقاله
ترجمه عنوان مقاله مقاومت فشاری محوری ستون های فولادی S460 جوشکاری شده در دمای بالا
عنوان انگلیسی مقاله Axial compressive strength of welded S460 steel columns at elevated temperatures
انتشار مقاله سال ۲۰۱۸
تعداد صفحات مقاله انگلیسی ۱۲ صفحه
هزینه دانلود مقاله انگلیسی رایگان میباشد.
منتشر شده در نشریه الزویر
نوع نگارش مقاله مقاله پژوهشی (Research article)
نوع مقاله ISI
فرمت مقاله انگلیسی  PDF
رشته های مرتبط مهندسی عمران
گرایش های مرتبط سازه
مجله سازه های جدار نازک – Thin-Walled Structures
دانشگاه Department of Civil and Environmental Engineering – The Hong Kong Polytechnic University – China
کلمات کلیدی ستون های H و جعبه جوشکاری شده، فشرده سازی محوری، درجه حرارت بالا، تحلیل عنصر محدود، طراحی، فولاد S460
کلمات کلیدی انگلیسی Welded H- and box section columns, Axial compression, Elevated temperatures, Finite element analysis, Design, S460 stee
شناسه دیجیتال – doi
https://doi.org/10.1016/j.tws.2018.04.006
کد محصول  E9023
وضعیت ترجمه مقاله  ترجمه آماده این مقاله موجود نمیباشد. میتوانید از طریق دکمه پایین سفارش دهید.
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بخشی از متن مقاله:
۱٫ Introduction

The use of high strength steel (HSS) with nominal yield strength over 460 MPa in structural construction brings about considerable advantages over mild steel. By using HSS, lighter structural members with smaller cross-section sizes can be adopted, resulting in the significant material savings and easier handling during construction. Consequently, the transportation and construction costs can be reduced. Besides, the lesser consumption of steel materials also generates higher environmental efficiency. In order to carry out accurate design of HSS structures, extensive research studies have been conducted to determine the behaviour of cold-formed and welded HSS columns under compression at room temperature. The local buckling behaviour and strength of HSS stub columns were investigated in experiments and numerical modelling [1–۶] and revised slenderness limits for crosssection classification were proposed [7]. The global buckling resistance of HSS columns was also investigated [4,5,8–۱۱] and suitable buckling curves for the design of HSS columns were also proposed [8–۱۰,۱۲]. However, although great progress in developing room temperature design guidance for HSS columns has been made, the performance of HSS columns under elevated temperature conditions has received much less attention and needs to be thoroughly investigated for designing the structures for the possibility of fire exposure. The behaviour of BISALLOY 80 high strength steel (with the nominal yield strength of 690 MPa) columns with box and I- sections at elevated temperatures was investigated numerically by Chen and Young [13]. A parametric analysis was performed to determine the temperature effect on the strength of both stub columns with various cross-section slenderness and long columns with different slenderness ratios. The suitability of specifications in European, American and Australian standards and direct strength method [17] for BISALLOY 80 high strength steel columns at elevated temperatures was assessed by comparing the results of the parametric study with those of the column strength predicted based on the standards with the substitution of material properties at elevated temperatures. It was found that European and American specifications and direct strength method could be used to conservatively predict the strength of BISALLOY 80 high strength steel columns at elevated temperatures. Wang and co-workers [19] conducted experiments to investigate the axial compressive strength of welded Q460 steel columns at only two temperatures of 450 °C and 650 °C and the column specimens with two cross-section sizes were tested. It was found that the axial compressive strength of the columns at 650 °C was significantly lower than that of the columns at 450 °C due to the deterioration of material strength and stiffness with increasing temperatures. However, no systematic study has been conducted to investigate the strength of 460 MPa steel columns at varying elevated temperatures that the structures may experience under fire condition. In this study, the axial compressive strength of welded S460 steel columns with box and H- sections at elevated temperatures was investigated using finite element analysis. Firstly, a stress-strain model for S460 steel at elevated temperatures was proposed based on the experimental results obtained by Qiang and the co-workers [20] for structural design and analysis.

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