Finite element model for bolted shear connectors in concrete-filled steel tubular columns

Santos, Lucas Ribeiro dos; Cardoso, Hermano de Sousa; Caldas, Rodrigo Barreto; Grilo, Lucas Figueiredo

doi:10.1016/j.engstruct.2019.109863

Cited by 39 publications

(9 citation statements)

References 23 publications

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“…When the compressive force is applied to the concrete core, the shear stress develops in the bolt shank because the bolt is restrained to the steel tube. This, in turn, leads to the tube failure and, at last, the concrete crushing appears in the region of bolt contact [5]. The behavior of shear studs has been compared with internal rings, which is another type of shear connector [6].…”

Section: Bond Strength Enhancementmentioning

confidence: 99%

Innovative shear transfer system for Concrete Filled Steel Tubes (CFST) in columns

Soltanalipour¹,

Ferrer²,

Albareda³

et al. 2021

ce papers

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The common failure mode of composite steel‐concrete structural elements, such as composite columns, generally occurs due to the relative slipping or separation of the steel sheet and the concrete. This leads to materials overspending and low resistance. In the case of beam‐to‐column joints, the most common solution used in composite construction is introducing a perpendicular gusset plate, which is complex in terms of execution. On the other hand, there is no efficient solution for shear transferring along the whole length of the column to prevent slip under bending. The UPC patent improves very significantly the shear transferring between steel and concrete, enough to achieve the permanent connection in many cases, by means of generating a series of many crown‐shaped breakages produced by punching in the profiling stage, not only in the joints but also in the whole length. When the concrete sets, the said breakages embedded therein have the function of resisting shearing forces generated between both materials. It has been successfully applied to composite slabs and, in terms of composite columns, it is also a disruptive innovation to solve the current shear transfer limitation. Besides, this innovative system is easy to be massively produced avoiding the complexities of the conventional beam‐to‐column joints and reducing the construction costs, especially in high‐rise buildings. The aim of this paper is to present this new technology for connecting steel sheet and concrete in CFST columns.

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Section: Bond Strength Enhancementmentioning

confidence: 99%

Innovative shear transfer system for Concrete Filled Steel Tubes (CFST) in columns

Soltanalipour¹,

Ferrer²,

Albareda³

et al. 2021

ce papers

View full text Add to dashboard Cite

show abstract

“…to elastic modulus (205 GPa) is taken as 1%. This is the number typically used in numerical modeling works for the purpose of bilinear idealization of the inelastic behavior of mild steel material and is well supported in the literature by many researchers (dos Santos et al 2020;Han et al 2008;Kaeding and Lindemann 2015;Salmon et al 2009).…”

Section: Steel Componentsmentioning

confidence: 94%

Behaviour of bolted lap joints in above-ground liquid-filled steel cylindrical tanks

Moslemi

Kianoush

2022

Can. J. Civ. Eng.

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Leakage is the main concern in steel bolted liquid tanks. In this study, the performance of this type of construction is investigated using a detailed finite element (FE) analysis. The validity of AWWA design practice in terms of the safe design of this type of structure at a wide range of service loads is evaluated. The FE analysis is performed in two stages using shell and solid elements in a three-dimensional ANSYS environment including the effect of geometric nonlinearity. The proposed FE model is capable to estimate the ultimate behaviors such as capacity curve, yield/failure pattern, and the occurrence of ovalling and curling. The FE results are compared with experimental ones and a good agreement is found. This study shows that the bolt arrangement selected in design can efficiently improve joint performance. It is recommended to use the limited deformation criterion in the leak-resistant design of bolted lap joints.

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“…Although there are many scholars investigated the behavior of CFST columns numerically [31][32][33], there are limited published studies on UHPFRCFSTs. Hassanein and Patel [31] investigated the behavior of round-ended rectangular CFST (RRCFST) columns.…”

Section: Introductionmentioning

confidence: 99%

“…Overall, the full-range load-strain curves produced by the FE analysis were in good agreement with the experimental results. dos Santos et al [33] reported on a study of the structural behavior of bolted shear connectors utilized as force transmission devices in concrete-filled composite columns using numerical modelling.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Ultra-high Performance Fiber Reinforced Concrete Filled Steel Tube Columns under Eccentric Loading

Osama

Sakr²

2022

Period. Polytech. Civil Eng.

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Recently, ultra-high performance fiber reinforced concrete (UHPFRC) has been commonly used as a structural material. In this study, finite element (FE) model is constructed to investigate the behavior of ultra-high performance fiber reinforced concrete filled steel tube columns (UHPFRCFSTs) under axial or eccentric loading. The analysis included three-dimensional FE model using solid elements. The novelty of the suggested FE model is the consideration of the confinement of the UHPFRC in-filled material. Furthermore addition, the numerical model includes initial local and overall geometric imperfections, as well as the inelastic response of both UHPFRC and steel materials. The interaction between the steel tube and UHPFRC in-filled is modelled using surface to surface contact. Experimental results from the literature are used to validate the FE model. It is proved that the FE model can predict the ultimate capacities, failure modes, and post-cracking behavior accurately for both short and long UHPFRCFSTs. The FE interaction diagram agreed very well with the experimental results. Using the verified FE model, a parametric study on UHPFRCFSTs is carried out. Several parameters, including concrete strength material, steel yield strength, and aspect ratio of the columns (column diameter/tube thickness), are investigated. Eventually, comparisons are conducted between the results obtained from FE simulation and the existing design codes for predicting load-moment interaction diagram of UHPFRCFSTs. It has been found that the Eurocode 4 predictions in most analyzed cases are conservative for UHPFRCFSTs.

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Finite element model for bolted shear connectors in concrete-filled steel tubular columns

Cited by 39 publications

References 23 publications

Innovative shear transfer system for Concrete Filled Steel Tubes (CFST) in columns

Innovative shear transfer system for Concrete Filled Steel Tubes (CFST) in columns

Behaviour of bolted lap joints in above-ground liquid-filled steel cylindrical tanks

Modeling of Ultra-high Performance Fiber Reinforced Concrete Filled Steel Tube Columns under Eccentric Loading

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