端部双法兰高温载荷下带腹板孔的冷弯型钢槽钢截面有限元分析

IF 1.7 3区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Advanced Steel Construction Pub Date : 2021-09-01 DOI:10.18057/ijasc.2021.17.3.2

Ankur Kumar, Krishanu Roy, Asraf Uzzaman, James B. P. Lim

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引用次数: 2

摘要

本文介绍了具有圆形腹板孔的冷弯型钢（CFS）槽钢在两端法兰（ETF）荷载条件下和在高温下的有限元研究结果。高温下厚度为1.95 mm的G250 CFS的应力-应变曲线取自Kankanamge和Mahendran，温度高达700℃。为了分析腹板孔尺寸和支承长度对高温下此类截面强度的影响，对总共288个有限元模型进行了参数研究。然后，使用参数研究结果来评估Uzzaman等人提出的强度折减系数方程的适用性。在从环境温度到高温的ETF荷载下，具有腹板孔的CFS通道截面。结果表明，折减因子方程在高温下是安全可靠的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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FINITE ELEMENT ANALYSIS OF UNFASTENED COLD-FORMED STEEL CHANNEL SECTIONS WITH WEB HOLES UNDER END-TWO-FLANGE LOADING AT ELEVATED TEMPERATURES

This paper presents the results of a finite element investigation on cold-formed steel (CFS) channel sections with circular web holes under end-two-flange (ETF) loading condition and subjected to elevated temperatures. The stress strain curve for G250 CFS with 1.95 mm thickness at elevated temperatures was taken from Kankanamge and Mahendran and the temperatures were considered up to 700 oC. To analyse the effect of web hole size and bearing length on the strength of such sections at elevated temperatures, a parametric study involving a total of 288 FE models was performed. The parametric study results were then used to assess the applicability of the strength reduction factor equation presented by Uzzaman et al. for CFS channel-sections with web holes under ETF loading from ambient temperature to elevated temperatures. It is shown that the reduction factor equation is safe and reliable at elevated temperatures.

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来源期刊

Advanced Steel Construction CONSTRUCTION & BUILDING TECHNOLOGY-ENGINEERING, CIVIL

CiteScore

2.60

自引率

29.40%

发文量

审稿时长

6 months

期刊介绍： The International Journal of Advanced Steel Construction provides a platform for the publication and rapid dissemination of original and up-to-date research and technological developments in steel construction, design and analysis. Scope of research papers published in this journal includes but is not limited to theoretical and experimental research on elements, assemblages, systems, material, design philosophy and codification, standards, fabrication, projects of innovative nature and computer techniques. The journal is specifically tailored to channel the exchange of technological know-how between researchers and practitioners. Contributions from all aspects related to the recent developments of advanced steel construction are welcome.