Geometrically nonlinear analysis of hybrid beam–column with several encased steel profiles in partial interaction

Keo, Pisey; Nguyen, Quang-Huy; Somja, Hugues

doi:10.1016/j.engstruct.2015.05.030

Cited by 9 publications

(4 citation statements)

References 27 publications

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“…Concrete was modeled as eight-node solid elements (C3D8R), steel profiles were modeled as four-node shell elements (S4R), and reinforcing bars (rebars) were modeled as two-node truss elements (T3D2). [2,10,16,37,[40][41][42][43] The bonding between the concrete and the steel beam was achieved by using a surfaceto-surface contact approach, as explained in the ABAQUS software documentation, to ensure a fully composite beam model. In order to find the optimal mesh size, different element sizes were tried since the members had simple shapes.…”

Section: Finite Element Modeling 41 | Element Types and Meshesmentioning

confidence: 99%

The behavior of concrete‐encased steel composite column‐beam joints under cyclic loading

Şermet

Ercan

Hökelekli

et al. 2021

Structural Design Tall Build

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This study outlines the cyclic loading response of a concrete-encased steel profile composite column-reinforced concrete beam connection. The experimental study performed for an interior joint. The column in joint was designed as a concreteencased I-steel profile composite column according to Eurocode 4, and the beam was designed as a regular reinforced concrete beam according to local building codes. In order to emphasize the effect of the joint design, different steel core orientations were used. The numerical analysis was performed using ABAQUS to predict behavior of the joint. The performance of the samples compared the load-carrying capacity, ductility, and failure type. Comparisons were made using load-displacement relationships and failure mechanisms. The analysis results showed that the failure was determined by the behavior of the beam, and the joint capacity depended on the shear capacity of the beam.

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Section: Finite Element Modeling 41 | Element Types and Meshesmentioning

confidence: 99%

The behavior of concrete‐encased steel composite column‐beam joints under cyclic loading

Şermet

Ercan

Hökelekli

et al. 2021

Structural Design Tall Build

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“…Xue et al 14 analyzed the stress distribution of columns with interconnected T‐shaped steel profiles assuming full bond between steel profiles and concrete. Keo et al 15 analytically explored the section strain distribution of the columns with several steel profiles using geometrically nonlinear analysis. Deng 16 conducted experimental on CEC‐MS with all the specimens cyclically loaded under a constant eccentricity ratio of 15%.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of concrete‐encased columns reinforced with multiple steel sections

Bao,

Li,

Fan

et al. 2024

Structural Design Tall Build

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SummaryConcrete‐encased columns reinforced with one built‐up steel core are widely used as mega columns in high‐rise buildings. Due to the enormous size of the steel core, multiple steel segments have to be welded and spliced on‐site, which might inflict detrimental impacts on the integrity and ductility of the columns. To solve this practical issue, one method using multiple steel sections to replace one gigantic built‐up section is proposed. However, whether those columns reinforced with individual steel sections could have the same capacity as the ones reinforced with one steel core and whether the current design method relying on strain compatibility is still applicable to design such columns remain unknown. In this study, one column specimen reinforced with multiple steel sections is tested and the test results are utilized to calibrate finite element models. Afterward, finite element (FE) analysis is performed on concrete‐encased columns reinforced with multiple steel sections to numerically examine the load capacity of those columns. Based on the numerical analysis, a design method based on modified strain distribution is proposed. Numerical results indicate that concrete‐encased columns reinforced with multiple steel sections exhibit similar performance compared with the one reinforced with one steel core, showing great potential to be applied as mega columns in high‐rise buildings.

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“…Besides these analytical works, several numerical models, mostly FE formulations have been developed to investigate the nonlinear behavior of both Bernoulli and Timoshenko multi-layer beams with inter-layer slip (Ayoub, 2005; Ayoub and Filippou, 2000; Dall’Asta and Zona, 2002, 2004; Martinelli et al ., 2012; Ranzi and Zona, 2007; Salari et al ., 1998; Schnabl et al ., 2007b; Zona and Ranzi, 2011). Several large displacement formulations for two-layer beams including slip at the interface have been proposed either within the total Lagrangian framework or using the co-rotational framework (Battini et al ., 2009; Hjiaj et al ., 2012; Keo et al ., 2015; Ranzi et al ., 2010). Most papers on composite beams are focused on the effects of inter-layer slip while the relative vertical displacement referred to as uplift is assumed to be negligible.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, it has been shown that locking problems occur for a low order displacement-based finite element formulation of composite beam when the continuous connection is considered. This problem can be avoided by either introducing internal nodes (Ranzi, 2008), adopting a strain field formulation (Schnabl et al ., 2007b), or using exact stiffness matrix (Battini et al ., 2009; Erkmen and Bradford, 2011; Keo et al ., 2015, 2016). Only a few authors (Aribert and Aziz, 1985; Aribert et al ., 1993; Guezouli and Alhasawi, 2014; Nguyen et al ., 2011a) have considered the discrete bond model to analyse the behavior of composite beams.…”

Section: Introductionmentioning

confidence: 99%

Large displacement analysis of two-layer beam-columns taking into account slip and uplift

Oeng

Keo

Guezouli

2023

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PurposeThis article presents a geometrically non-linear finite element formulation for the analysis of planar two-layer beam-columns taking into account the inter-layer slip and uplift.Design/methodology/approachThe co-rotational method is adopted, in which the motion of the element is decomposed into a rigid body motion and a small deformational one. The geometrically linear formulation can be used in the local frame and automatically be transformed into a geometrically nonlinear one. In co-rotational frame, both layers are assumed to be discretely connected at the element ends. Slips and uplifts are assumed to be small. Consequently, the condition of non interpenetration between the layers can be treated using a node-to-node contact algorithm. The resolution methods such as penalty (PM) and augmented Lagrangian method (ALM) with Uzawa updating scheme can be used.FindingsThe non-penetration condition between the layers of composite beams can be formulated by using contact law. It is found that despite a low convergence rate of augmented Lagrangian method compared to penalty method, the former prevents the unrealistic penetration. Besides, it is shown that the buckling load of the composite beam-column is largely affected by the uplift stiffness of the connectors.Originality/valueThe proposed finite element model is capable of simulating accurately the geometrically non-linear behavior of planar two-layer beam-columns taking into account the inter-layer slip and uplift. Regarding uplift, the non-penetration condition is strictly enforced by considering rigorous contact conditions at the interface. The constraint problem is solved using the penalty method or the augmented Lagrangian method with the Uzawa updating scheme.

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Geometrically nonlinear analysis of hybrid beam–column with several encased steel profiles in partial interaction

Cited by 9 publications

References 27 publications

The behavior of concrete‐encased steel composite column‐beam joints under cyclic loading

The behavior of concrete‐encased steel composite column‐beam joints under cyclic loading

Finite element analysis of concrete‐encased columns reinforced with multiple steel sections

Large displacement analysis of two-layer beam-columns taking into account slip and uplift

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