Assessment of Eurocode shear design provisions for cold-formed steel sections

Gatheeshgar, Perampalam; Bock, Marina; Chandrasiri, Dilanka; Suntharalingam, Thadshajini

doi:10.1016/j.istruc.2022.12.017

Cited by 3 publications

(11 citation statements)

References 23 publications

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“…[13] shear design curve proposed by Gatheeshgar et al [16]. This comparison demonstrated a mean value of 1.00 and a COV of 0.217 for the ratios of collected test and FEA to prediction, indicating a high level of accuracy and consistency in shear strength predictions for CFS beams with web holes.…”

Section: Assessment Of New Design Proposalsmentioning

confidence: 74%

“…The shear design provisions proposed by Gatheeshgar et al [16], in accordance with EN 1993-1-3 [13], do not account for the presence of web holes. Figure 6 shows the collected shear tests and FEA data plotted against the shear design curve calculated using Eq.…”

Section: New Design Formulaementioning

confidence: 99%

“…The shear design provisions of CFS beams, as defined in EN 1993-1-3 [13], were evaluated by Gatheeshgar et al [16] to determine their effectiveness in estimating shear strength. The shear design provisions were assessed against the compiled database of 67 experimental tests [14,[17][18][19][20][21] of CFS lipped channels and hollow flange sections.…”

Section: Improved Shear Design Equations By Gatheeshgar Et Al [16]: N...mentioning

confidence: 99%

“…This modification involves recognizing the effect of web holes and the resulting increase of web slenderness ( 𝑤 ) due to the presence of web holes. As a result, web slenderness proposed by Gatheeshgar et al [16] (Eq. ( 4)) was modified by applying a factor that ) represents the web hole ratio, which is the ratio between depth of the web hole and clear depth of the web.…”

Section: New Design Formulaementioning

confidence: 99%

“…Figure4 Comparison of CFS sections shear test results against current EN 1993-1-3 [13] shear design provisions: Source[16] …”

mentioning

confidence: 99%

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Assessment of Eurocode 3 Shear Design Provisions for Cold‐Formed Steel Beams with Web Holes

Gatheeshgar,

Bock,

Chandrasiri

et al. 2023

ce papers

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Cold‐formed steel beams are often provided with web holes to accommodate service conduits. These web holes result in reduced structural strength. Accurate estimation of the structural strength, including shear strength, is crucial during the design phase. There are a lot of studies available in the literature investigating the shear strength reduction in cold‐formed steel beams due to web holes. However, the experiments and parametric finite element results were not assessed against Eurocode 3 shear design provisions. Therefore, the shear design of cold‐formed steel beams with web holes is investigated herein. Existing experimental and parametric finite element analysis data on cold‐formed steel beams with circular web holes were collected from the literature. The accuracy of the current Eurocode 3 shear design provisions was then assessed using the collected data. The comparisons showed that the current Eurocode 3 shear design provisions were not suitable to estimate the shear strength of cold‐formed steel beams with web holes. Finally, Eurocode 3 shear design provisions are extended to capture the effect of web holes and verified against the available shear tests and finite element results. It was found that the new extended shear design proposal offers improved accuracy and consistency in shear strength predictions.

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Section: Assessment Of New Design Proposalsmentioning

confidence: 74%

Section: New Design Formulaementioning

confidence: 99%

Section: Improved Shear Design Equations By Gatheeshgar Et Al [16]: N...mentioning

confidence: 99%

Section: New Design Formulaementioning

confidence: 99%

“…Figure4 Comparison of CFS sections shear test results against current EN 1993-1-3 [13] shear design provisions: Source[16] …”

mentioning

confidence: 99%

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Assessment of Eurocode 3 Shear Design Provisions for Cold‐Formed Steel Beams with Web Holes

Gatheeshgar,

Bock,

Chandrasiri

et al. 2023

ce papers

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Reliability analysis of shear design provisions for cold formed steel sections

Simwanda,

Gatheeshgar,

Ikotun

et al. 2024

Journal of Constructional Steel Research

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Optimization of Cold-Formed Thin-Walled Cross-Sections in Portal Frames

Stulpinas,

Daniūnas

2024

Buildings

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Portal frames with built-up cold-formed cross-sections hold significant potential; however, there is a notable gap in the analysis of cross-section types and connections. In this study, an optimization algorithm was developed for the closed cross-sections of portal frame members. An optimization algorithm was tested against optimized open cold-formed cross-sections. The results indicated a portal frame volume up to 38% lower where members were assembled of optimal closed cross-sections when compared to frames with optimal open cross-sections. Parametric analysis was carried out, where two types of cross-sections were examined: Type A, with four web stiffeners bent inwards, and Type B, with four web stiffeners bent outwards. The optimization was conducted using a Genetic Algorithm in MATLAB R2022b. Portal frames with optimal Type B cross-sections had a volume that was up to 22% lower when compared to frames with optimal Type A cross-sections. Significant differences were noted between the optimal beam and column cross-sections, with the optimal column cross-section thickness being on average 74% greater, but the optimal beam cross-section height being on average 81% greater than those of the respective counterparts. In this article, a practical assembly solution for the connection of the frame members was proposed for the optimized novel closed cross-section types in portal frames. However, the strength and stiffness of these connections were not analyzed in this research.

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Assessment of Eurocode shear design provisions for cold-formed steel sections

Cited by 3 publications

References 23 publications

Assessment of Eurocode 3 Shear Design Provisions for Cold‐Formed Steel Beams with Web Holes

Assessment of Eurocode 3 Shear Design Provisions for Cold‐Formed Steel Beams with Web Holes

Reliability analysis of shear design provisions for cold formed steel sections

Optimization of Cold-Formed Thin-Walled Cross-Sections in Portal Frames

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