A Parametric Study on the Flexural Capacity of Cold-Formed Steel Stacked Built-up Sections

IF 1.1 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

International Journal of Steel Structures Pub Date : 2024-08-30 DOI:10.1007/s13296-024-00895-8

Hooman Rezaeian, Rhonita Andarini, Marina Bock, Mohammad Yekrangnia

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Abstract

This paper presents an exploratory parametric study on the flexural capacity of an innovative cold-formed steel (CFS) stacked built-up beam section. The built-up section consists of lipped channel sections mounting vertically and screwed together through their lips and webs. Using the Direct Strength Method (DSM), a parametric study of this section is presented. The accuracy of this method is proven by comparing the results of the experiments with the modelling. Different configurations are studied, including sections compromising two, three, four and five channel sections, with thicknesses ranging from 1 to 3 mm. Four different steel grades are considered. The open flange of the built-up sections is covered by a CFS steel sheet cap to make a closed box beam. The effect of different thicknesses of the cap on the flexural capacity is also studied. The impact of the section configuration and thickness is understood to be more pronounced on the flexural capacity.

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冷弯钢叠合建筑构件抗弯能力参数研究

本文对一种创新型冷弯型钢（CFS）叠合组合梁截面的抗弯能力进行了探索性参数研究。叠合梁截面由垂直安装并通过唇缘和腹板拧在一起的唇缘槽钢截面组成。本文采用直接强度法（DSM）对该截面进行了参数研究。通过比较实验结果和建模结果，证明了该方法的准确性。研究了不同的配置，包括两个、三个、四个和五个槽型截面，厚度从 1 毫米到 3 毫米不等。考虑了四种不同的钢材等级。构建型钢的开口翼缘由 CFS 钢板盖覆盖，形成一个封闭的箱形梁。还研究了不同厚度的盖帽对抗弯能力的影响。据了解，截面结构和厚度对抗弯能力的影响更为明显。

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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来源期刊

International Journal of Steel Structures 工程技术-工程：土木

CiteScore

2.70

自引率

13.30%

发文量

122

审稿时长

12 months

期刊介绍： The International Journal of Steel Structures provides an international forum for a broad classification of technical papers in steel structural research and its applications. The journal aims to reach not only researchers, but also practicing engineers. Coverage encompasses such topics as stability, fatigue, non-linear behavior, dynamics, reliability, fire, design codes, computer-aided analysis and design, optimization, expert systems, connections, fabrications, maintenance, bridges, off-shore structures, jetties, stadiums, transmission towers, marine vessels, storage tanks, pressure vessels, aerospace, and pipelines and more.