Shear buckling strength of web-posts in castellated steel beams in fire

Justino, Larice Gomes; Ribeiro, José Carlos Lopes; Veríssimo, Gustavo de Souza; Paes, José Luiz Rangel; Pedroti, Leonardo Gonçalves

doi:10.1016/j.engstruct.2019.109960

Cited by 9 publications

(2 citation statements)

References 16 publications

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“…This effect is crucially give effects to the spacing of the Web perforation. From the analogy of strut model (Web buckling by shear) which the compressed diagonal of the Web-post can be interpreted as a member subjected to the axial compressive force (Justino et al , 2020). Therefore, this type of failure mode can be avoided by using the larger spacing of Web.…”

Section: Resultsmentioning

confidence: 99%

Parametrical analysis of the tapered steel section with elliptical perforation: shear behaviour effects

De’nan

Hashim

Sua

2022

WJE

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Purpose With the vast advancement of structural steel properties over the recent decades, structural steel has become the dominate material for the construction of bridges, stadiums, factories and high rise buildings. This paper aims to present the study of structural behaviour and efficiency of tapered steel section with elliptical perforation under shear loading conditions. Design/methodology/approach The effect of various elliptical perforation configurations such as tapering ratio, perforation size, perforation orientation and perforation layout on the shear behaviour of tapered steel section has been investigated by using finite element method. A total of 112 models are simulated via LUSAS software. Findings It has been found that the most efficient model is the tapered steel section with tapering ratio of 0.3 and vertical elliptical perforation of 0.2 times the section depths which are arranged in Layout 3. The most efficient model has a shear efficiency of 1,094.35 kN, which is 4.12% less than the tapered steel section without perforation, but it could achieve a 0.32% of weight reduction. Originality/value The smaller tapering ratio and perforation size contributed to the higher shear buckling capacity and efficiency for the elliptical perforated tapered steel section.

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Section: Resultsmentioning

confidence: 99%

Parametrical analysis of the tapered steel section with elliptical perforation: shear behaviour effects

De’nan

Hashim

Sua

2022

WJE

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“…In 2021, Kang et al [38] proposed a shear strength prediction model based on the DSM (Direct Strength Method). Furthermore, an analogy to the compression strut [15,30,32,33,23] is used to develop calculation methods for beams with hexagonal openings [39].…”

Section: Vierendeel Bending (Vm) and Web-post Buckling (Wpb)mentioning

confidence: 99%

Cellular Beams with Closely Spaced Web Openings – A Review of Analytical Calculation Models for Web-Post Buckling

Saternus¹

2022

Adv. Sci. Technol. Res. J.

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This paper is devoted to cellular beams manufactured by fl ame cutting and welding of hot rolled I-sections. The infl uence of fabrication proces ses on the size of geometric and material imperfections was considered. Static performance was characterised, as were the failure modes, with particular emphasis on the Vierendeel mechanism and web-post buckling. As the literature review shows, a local loss of web post stability is a frequent failure mode of cellular beam with closely spaced web openings. The main objective of this paper is present a summary of research on web post buckling (WPB) in cellular beams in light of the available analytical computational methods for determining WPB resistance based on the analogy to compression member buckling. This paper addresses the need for a clear assessment of the discrepancies between the assumptions and calculation algorithms used in the presented methods, so far lacking in the literature. This paper includes an explanation of the essence of the WPB phenomenon, a summary of the basic assumptions and algorithms used in the available methods, a description of the differences between them, and a critical comparison of these methods. The presented algorithms were unifi ed and adjusted to the nomenclature of PN-EN 1993-1-1. For 7 cellular beams, the analytical column buckling resistance under the action of vertical shear force was determined according to 5 analytical methods implemented in MS Excel. The results were presented in tabular and graphical forms. Signifi cant discrepancies between the results from the diff erent methods were shown and discussed. The assumptions of the methods vary signifi cantly. The largest diff erences between the predicted resistances were observed for narrow posts, while for wider posts, the methods showed better agreement. The lack of clear consensus on the correct design procedure does not encourage designers to optimally design such load-bearing members or may lead to construction disasters. This article indicates the points of disagreement concerning the calculation models used and outlines the direction for further work. A step for future work will be to verify the assumptions of numerical models and establish clear guidelines for designers in the fi eld of analytical calculations.

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Experimental and Numerical Tests on Beams with Web Openings Under Cyclic Loading

Maali,

Çınar

2024

Int J Civ Eng

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Shear buckling strength of web-posts in castellated steel beams in fire

Cited by 9 publications

References 16 publications

Parametrical analysis of the tapered steel section with elliptical perforation: shear behaviour effects

Parametrical analysis of the tapered steel section with elliptical perforation: shear behaviour effects

Cellular Beams with Closely Spaced Web Openings – A Review of Analytical Calculation Models for Web-Post Buckling

Experimental and Numerical Tests on Beams with Web Openings Under Cyclic Loading

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