{"title":"Effect of External Ring Stiffener on the Chord Members of Cold-Formed Steel T-Joints Under Combined Axial Compression and Bending","authors":"","doi":"10.1007/s13296-024-00816-9","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>This paper aims to study the experimental and analytical behaviour of cold-formed steel (CFS) T-joint members with or without external ring stiffeners under combined axial compression and bending. The parameters varied in the study include the type of T-joints (with and without ring stiffeners), spacing of the stiffeners (100 mm and 200 mm from the central axis of the T-Joint), and thickness of the ring stiffeners (4 mm and 6 mm). The load–deflection and load-strain behaviour were studied by measuring the overall deflection of the T-joints and strain using dial gauges and strain indicators, respectively. The load-carrying capacity of the T-joints with external ring stiffeners was compared, and the results of a numerical investigation showed good agreement. An extensive parametric study was carried out for different geometric parameters of the ring stiffener, chord, and brace member using the FE model to obtain the ultimate strength of the stiffened T-joints, and strength was also compared and obtained using the published equation. From the results of this investigation, it was found that the T-joints with external ring stiffeners can resist more strength and deformation when compared to the T-joints without external ring stiffeners.</p>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Steel Structures","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s13296-024-00816-9","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
This paper aims to study the experimental and analytical behaviour of cold-formed steel (CFS) T-joint members with or without external ring stiffeners under combined axial compression and bending. The parameters varied in the study include the type of T-joints (with and without ring stiffeners), spacing of the stiffeners (100 mm and 200 mm from the central axis of the T-Joint), and thickness of the ring stiffeners (4 mm and 6 mm). The load–deflection and load-strain behaviour were studied by measuring the overall deflection of the T-joints and strain using dial gauges and strain indicators, respectively. The load-carrying capacity of the T-joints with external ring stiffeners was compared, and the results of a numerical investigation showed good agreement. An extensive parametric study was carried out for different geometric parameters of the ring stiffener, chord, and brace member using the FE model to obtain the ultimate strength of the stiffened T-joints, and strength was also compared and obtained using the published equation. From the results of this investigation, it was found that the T-joints with external ring stiffeners can resist more strength and deformation when compared to the T-joints without external ring stiffeners.
摘要 本文旨在研究带或不带外部环形加强筋的冷弯型钢 (CFS) T 型连接构件在轴向压缩和弯曲联合作用下的实验和分析行为。研究中变化的参数包括 T 形接头的类型（带和不带环形加劲件）、加劲件的间距（距 T 形接头中心轴 100 毫米和 200 毫米）以及环形加劲件的厚度（4 毫米和 6 毫米）。通过使用刻度盘和应变指示器分别测量 T 形接头的整体挠度和应变，研究了荷载-挠度和荷载-应变行为。比较了带有外环加劲件的 T 形接头的承载能力，数值研究结果表明两者吻合良好。为了获得加劲 T 型接头的极限强度，使用 FE 模型对环形加劲件、弦杆和支撑件的不同几何参数进行了广泛的参数研究，并使用已公布的方程对强度进行了比较和计算。研究结果表明，与不带外环加劲件的 T 型接头相比，带外环加劲件的 T 型接头能抵抗更大的强度和变形。
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.
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