Experimental study on demountable shear connectors in profiled composite slabs

Yang, Jie; Lam, Dennis; Dai, Xuewu; Sheehan, Therese

doi:10.4995/asccs2018.2018.6959

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…The full-scale composite beam test demonstrated that the ultimate moment capacity of a demountable beams can be well predicted by the plastic theory [30]. Furthermore, as push-out tests on threaded studs were conducted in both continuous and discontinuous metal decking composite slabs, it was established that connectors in continuous slabs had lower ultimate strength, but higher strength at 6 mm slip than those in discontinuous slabs [31].…”

Section: Bolt Diametermentioning

confidence: 89%

“…In this way, the final product has a geometry similar to the previously described bolts without embedded nuts. In past years, a series of tests followed by numerical simulations were conducted on these connectors installed in both solid slabs and composite slabs with metal decking [17,24,30,31,38]. Variations in the length of the threaded and collar part of the stud were covered by such studies, which also focused on concrete strength, reinforcement arrangement in push-out test set-up, shear connector height and temperature level during loading.…”

Section: Bolt Diametermentioning

confidence: 99%

See 1 more Smart Citation

Demountable composite steel-concrete floors: A state-of-the-art review

Jakovljević¹,

Spremić²,

Marković³

2021

JCE

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In keeping with current demands for sustainable development in all segments of the industry, numerous research in the field of steel-concrete composite structures has been focused on developing demountable shear connectors. In the past years, various demountable shear connectors have been suggested, with various mechanisms for transferring shear force between a steel profile and a concrete or composite slab. In this paper, a state of the art on the topic is given, and experimental and numerical research results of push-out and beam tests are summarized.

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Section: Bolt Diametermentioning

confidence: 89%

Section: Bolt Diametermentioning

confidence: 99%

Demountable composite steel-concrete floors: A state-of-the-art review

Jakovljević¹,

Spremić²,

Marković³

2021

JCE

View full text Add to dashboard Cite

show abstract

“…One layer of Ø8 mm reinforcement was placed in the top zone of the slab. Longitudinal bars were bent on one side forming a hook to reinforce the supporting rib of the concrete slab, as suggested by some authors [24,25]. Stirrup bars applied in specimens of the series DLU were formed in a U-shape to pass around the headed stud.…”

Section: Fig 2 Configuration Of Push-out Specimensmentioning

confidence: 99%

“…Also, a system made of T-bolts and clamps was experimentally investigated [23]. Though most of the research has been focused on demountable shear connections in solid concrete slabs, some studies have investigated the behaviour of bolted shear connectors in composite slabs with profiled steel sheeting [19,[24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Shear Behaviour of Demountable Connections With Bolts and Headed Studs

2023

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Following the trend of sustainable development and structure reuse, many novel solutions related to demountable shear connectors for application in steel-concrete composite beams have been proposed in recent years. This paper provides a further contribution to the research field by proposing a demountable connection with bolts and welded headed studs. The transfer of shear force between a steel flange and a composite concrete slab cast in an open trough profiled steel sheeting is indirect, passing through a steel plate or angles. The proposed solution enables convenient dismantling and reuse of both the composite slab and the steel profile. The experimental investigation included push-out tests, performed to assess the connection shear behaviour, determine resistance and ductility, and identify failure modes. Various configurations of the demountable connection were analysed, including connections with continuous and discontinuous slabs over the support. The response of the suggested demountable solution was compared to the corresponding non-demountable shear connection with headed studs. According to experimental investigation, finite element models were developed, and their accuracy was validated by comparing numerical predictions with experimental results. Parametric studies were conducted using numerical models to evaluate the effects of key parameters on the connection performance, such as plate and angle thickness, stirrup reinforcement position, and transverse distance between a headed stud and slab edge. Directions for design were proposed taking into account the results obtained.

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Numerical Study of Composite Steel Cellular Beam System Using Demountable Shear Connectors

Dai¹,

Lam²,

Sheehan³

et al. 2021

ce papers

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Steel concrete composite beams have been increasingly adopted in practice due to their advantages with respect to their structural features and constructability. However, in conventional composite beam systems the composite action is applied via the shear connectors welded at the top flange of the downstand steel beam and embedded in the concrete slabs, making the disassembly of the beam system and reuse of any component impossible. This paper presents a numerical study of a new composite beam system with a steel cellular beam, metal deck flooring and using demountable shear connectors. According to the experimental study, this composite beam system made the demounting, reassembly and member reuse possible, and did not compromise the loading capacity. In the numerical study presented in the paper, the finite element model was developed and validated against the results obtained from the experimental study. The parametric study further examined the effects of concrete strength, shear connector arrangements etc. The comparison and analysis clarified the mechanism of the demountable shear connector and the effect of construction method on the load capacity of the composite beam system, and provided a deeper insight into the behavior of this type of shear connector. Through this numerical study, the structural merits of the composite beam system using demountable shear connectors were highlighted.

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Experimental study on demountable shear connectors in profiled composite slabs

Cited by 7 publications

References 8 publications

Demountable composite steel-concrete floors: A state-of-the-art review

Demountable composite steel-concrete floors: A state-of-the-art review

Shear Behaviour of Demountable Connections With Bolts and Headed Studs

Numerical Study of Composite Steel Cellular Beam System Using Demountable Shear Connectors

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