{"title":"Buckling behaviour of cold-formed steel sigma beams subjected to pallet loads","authors":"Liusi Dai, Qiqi Jia, Yiming He, Chong Ren","doi":"10.1016/j.tws.2025.112928","DOIUrl":null,"url":null,"abstract":"<div><div>This paper presents an experimental and numerical investigation of the buckling behaviour of cold-formed steel (CFS) sigma beams subjected to pallet loads. Tests were performed using two different loading modes for simulating pallet loads on the upper flange and the short supports bolted to the web. The sigma beams subjected to loading on the short supports demonstrated higher ultimate loads than those subjected to loading on the upper flange, with an average increase of 38 %. Parametric analyses were performed by using validated numerical models. The influences of the member length, section thickness, section height, web stiffener depth and web stiffener height on the load-carrying capacities were discussed. The applicability of the current design curve obtained using the direct strength method with lateral-torsional buckling was assessed based on experimental and numerical data. The results show that the design curve provides an accurate estimation of the ultimate loads of CFS sigma beams subjected to pallet loads.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"210 ","pages":"Article 112928"},"PeriodicalIF":5.7000,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thin-Walled Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263823125000229","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
Buckling behaviour of cold-formed steel sigma beams subjected to pallet loads
This paper presents an experimental and numerical investigation of the buckling behaviour of cold-formed steel (CFS) sigma beams subjected to pallet loads. Tests were performed using two different loading modes for simulating pallet loads on the upper flange and the short supports bolted to the web. The sigma beams subjected to loading on the short supports demonstrated higher ultimate loads than those subjected to loading on the upper flange, with an average increase of 38 %. Parametric analyses were performed by using validated numerical models. The influences of the member length, section thickness, section height, web stiffener depth and web stiffener height on the load-carrying capacities were discussed. The applicability of the current design curve obtained using the direct strength method with lateral-torsional buckling was assessed based on experimental and numerical data. The results show that the design curve provides an accurate estimation of the ultimate loads of CFS sigma beams subjected to pallet loads.
期刊介绍：
Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses.
Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering.
The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.
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