Lateral-torsional buckling of cellular beams according to the possible updating of EC3

Ferreira, Felipe Piana Vendramell; Rossi, Alexandre; Martins, Carlos Humberto

doi:10.1016/j.jcsr.2018.10.011

Cited by 70 publications

(17 citation statements)

References 21 publications

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“…1. 150 mm of HCU depth with a chamfered end (Figure 1a Geometrical nonlinear analyses were processed using the Static Riks metho method was previously used in [25,[34][35][36][37][38][39][40] and is based on the arc-length method ual stresses were not considered. These stresses do not influence the ultimate stre composite beams subjected to only positive moments.…”

Section: Numerical Model: Validation Studymentioning

confidence: 99%

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Steel-Concrete Composite Beams with Precast Hollow-Core Slabs: A Sustainable Solution

et al. 2021

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Industrialization of construction makes building operation more environmental friendly and sustainable. This change is necessary as it is an industry that demands large consumption of water and energy, as well as being responsible for the disposal of a high volume of waste. However, the transformation of the construction sector is a big challenge worldwide. It is also well known that the largest proportion of the material used in multistory buildings, and thus its carbon impact, is attributed to their slabs being the main contributor of weight. Steel–concrete-composite beams with precast hollow-core slabs (PCHCSs) were developed due to their technical and economic benefits, owing to their high strength and concrete self-weight reduction, making this system economical and with lower environmental footprint, thus reducing carbon emissions. Significant research has been carried out on deep hollow-core slabs due to the need to overcome larger spans that resist high loads. The publication SCI P401, in accordance with Eurocode 4, is however limited to hollow-core slabs with depths from 150 to 250 mm, with or without a concrete topping. This paper aims to investigate hollow-core slabs with a concrete topping to understand their effect on the flexural behavior of steel–concrete-composite beams, considering the hollow-core-slab depth is greater than the SCI P401 recommendation. Consequently, 150 mm and 265 mm hollow-core units with a concrete topping were considered to assess the increase of the hollow core unit depth. A comprehensive computational parametric study was conducted by varying the in situ infill concrete strength, the transverse reinforcement rate, the shear connector spacing, and the cross-section of steel. Both full and partial interaction models were examined, and in some cases similar resistances were obtained, meaning that the same strength can be obtained for a smaller number of shear studs, i.e., less energy consumption, thus a reduction in the embodied energy. The calculation procedure, according to Eurocode 4 was in favor of safety for the partial-interaction hypothesis.

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Section: Numerical Model: Validation Studymentioning

confidence: 99%

“…Geometrical nonlinear analyses were processed using the Static Riks method. This method was previously used in [25,[34][35][36][37][38][39][40] and is based on the arc-length method. Residual stresses were not considered.…”

Section: Testsmentioning

confidence: 99%

Steel-Concrete Composite Beams with Precast Hollow-Core Slabs: A Sustainable Solution

et al. 2021

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“…Accordingly, the strength of the perforated beam is less than the reference beam. This strength is influenced by the shape and size of holes and the space between them (the distance S ) [32], [14], [33] and [34].…”

Section: Finite Elements Analysismentioning

confidence: 99%

Holes' Parameters Analysis of a Perforated Thin-Walled Lipped Beam Buckled Under a Bending Load

Khazaal

Al-Khafaji

Abdulsahib

2021

IJAME

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This work studied the effects of holes on the buckling characteristic of an open thin-walled lipped channel beam under a bending load. A nonlinear finite element method was utilised to examine the buckling behaviour of the beam. Experimental works were carried out to verify the finite element simulation. Three factors were chosen to examine their influence on the buckling of the beam. These factors namely, the holes’ shape, perforated ratio (hole length to beam height) and spacing ratio (centre to centre distance between holes to beam height). The finite elements output was analysed by implementing the Taguchi method to distinguish the best group of three parameters collections for optimal strength of buckling. Whereas the analysis of variance technique (ANOVA) method was applied to specify the impact of each parameter on critical buckling load. Outcomes showed that the combination of parameters that gives the best buckling strength is the hole with a hexagonal shape, perforated ratio =1.7 and spacing ratio =1.3, and the holes’ shape is the most effective factor. In addition, the study demonstrated that the hole's shape factor has the greatest influence on the buckling capacity. While the perforated ratio factor is the least influential.

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“…Steel. For steel elements (box girders, reinforcement bars and headed shear studs), a perfect elastoplastic stress-strain relationship was adopted (Ferreira, Rossi and Martins, 2019;Rossi et al, 2020c;Rossi et al, 2020d). Concrete.…”

Section: Boundary Conditionsmentioning

confidence: 99%

Numerical assessment of effective width in steel-concrete composite box girder bridges

Nicoletti

Rossi

Souza

et al. 2020

Advances in Structural Engineering

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The present paper aims to determine numerically in the Abaqus® software the parameters that have the greatest influence on the effective width of steel-concrete composite box girder bridges. In the technical standards and in the literature, there is no specific recommendation for calculating the effective width in steel-concrete composite box girder bridge. As an alternative, the existing recommendations for steel-concrete composite I-girders are adopted. Therefore, in the absence of standards recommendations for steel-concrete composite box girder bridges, there is a need for an investigation into the distribution of stresses at the steel-concrete interface, because if the effective width was admitted incorrectly, may result in costly or even unsafe solutions. For this purpose, the effective numerical width of 160 models of steel-concrete composite box girder bridges was determined, in which the study variables were the configuration of the transversal section, the slab height, the span length and the elements arrangement in the cross section. After analyzing the results, it was proposed a recommendation to determine effective width of steel-concrete composite box girder bridges.

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Lateral-torsional buckling of cellular beams according to the possible updating of EC3

Cited by 70 publications

References 21 publications

Steel-Concrete Composite Beams with Precast Hollow-Core Slabs: A Sustainable Solution

Steel-Concrete Composite Beams with Precast Hollow-Core Slabs: A Sustainable Solution

Holes' Parameters Analysis of a Perforated Thin-Walled Lipped Beam Buckled Under a Bending Load

Numerical assessment of effective width in steel-concrete composite box girder bridges

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