Strength prediction of built-up radially battened columns in torsional buckling

Sun, Hao-Jun; Wen, Chen-Bao; Zhu, Bo-Li; Guo, Yan-Lin; Duan, Jin-Song; Liu, Zhen-Guo; Zhao, Qiang

doi:10.1016/j.tws.2023.111205

Cited by 4 publications

(1 citation statement)

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“…Thick specimens showed a greater amount of reaction between sectional and global buckling compared to thinner specimens of the same length [59]. Notably, the elas tic buckling stress of built-up radially battened columns is notably influenced by the quan tity of battens, according to observations [60]. For CFS hat-shaped members, the fillet ra dius's impact on the bending capability is likewise substantial [61].…”

Section: Factors Influencing Cold-formed Built-up Section Performancementioning

confidence: 92%

Investigating the Factors Influencing the Strength of Cold-Formed Steel (CFS) Sections

Hussein,

Hussein

2024

Buildings

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The utilization of cold-formed steel (CFS) sections in construction has become widespread due to their favorable attributes, including their lightweight properties, high strength, recyclability, and ease of assembly. To ensure their continued safe and efficient utilization, this review provides a comprehensive investigation into the factors influencing the strength of CFS members. This analysis encompasses design codes, prediction methodologies, material properties, and various structural configurations. This review uncovers discrepancies among existing design codes, particularly noting conservative predictions in AISI and AS/NZS standards for composite and built-up sections. Additionally, the effectiveness of prediction methods such as the direct strength method and effective width method varies based on specific structural configurations and loading conditions. Furthermore, this review delves into recent advancements aimed at enhancing fire resistance, connection design, and the composite behavior of CFS structures. The influence of factors such as eccentricity, sheathing materials, and bolt spacing on structural performance is also examined. This study underscores the crucial role of accurate prediction methods and robust design standards in ensuring the structural integrity and safety of CFS constructions. Through a comparative analysis, it is revealed that AISI and AS/NZS standards exhibit conservatism in predicting nominal buckling loads compared to experimental data. Conversely, a non-linear finite element analysis demonstrates a strong correlation with laboratory tests, offering a more accurate prediction of nominal buckling capacity. Overall, this review offers comprehensive insights aimed at optimizing CFS structural design practices. By identifying key areas for future research and development, this work contributes to the ongoing advancement of safe and efficient CFS construction applications.

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Section: Factors Influencing Cold-formed Built-up Section Performancementioning

confidence: 92%