Headed Shear Studs versus High-Strength Bolts in Prefabricated Composite Decks

Pavlović, Marko; Spremić, Milan; Marković, Zlatko; Veljković, Milan

doi:10.1061/9780784479735.052

Cited by 23 publications

(37 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results of the push-out tests for bolted shear connectors in [15] show accumulative slip during cyclic loading. The initial (residual) slip in bolted shear connectors occur in the first load cycle once preloading of bolts are overcome and the bolt slips in a hole.…”

Section: Initial Slip and Incomplete Interactionmentioning

confidence: 97%

08.08: Prefabricated demountable concrete and FRP decks in composite structures

Pavlović

Veljković

2017

ce papers

Self Cite

View full text Add to dashboard Cite

Welded shear studs are traditionally used to achieve composite actions between steel beams and concrete slabs. Relevance of composite structures for future applications in construction sector is increased by using demountable shear connectors which enables easy reuse of structures. The latest achievements of using demountable bolts embedded in prefabricated concrete slabs as shear connectors are presented in this paper. The focus of the investigation is on possible influence of execution tolerances on the level of composite action. The second issue addressed in the paper is use of Fibre Reinforced Polymer (FRP) composite deck instead of concrete slabs. FRP decks have high strength-to-weight ratio which reduce the total weight of the deck. Use of decks which have smaller self-weight facilitates the transport and execution process and reduces foundation costs especially in high-rise buildings. FRP composites are used in aerospace, automotive and shipbuilding industries for decades. They are considered as a maintenance free material. The main obstacle for wider applications of FRP material in construction is relatively a low stiffness of composites made of glass fibres and thermoset resins. Use of sandwich systems and hybrid decks, which combine FRP and the steel to increase the stiffness, are investigated in order to satisfy the design requirements. The third item of modern composite structures considered in this paper is use of high strength steel (HSS) grades to optimize the weight/strength ratio of structures. Results of a short parametric study using welded hybrid beams, combination of HSS and mild steel grades, is presented. This indicates significant reduction of weight and costs compared to the design using rolled cross section beams.

show abstract

Section: Initial Slip and Incomplete Interactionmentioning

confidence: 97%

08.08: Prefabricated demountable concrete and FRP decks in composite structures

Pavlović

Veljković

2017

ce papers

Self Cite

View full text Add to dashboard Cite

show abstract

“…Besides high-strength friction-grip bolt and bolt without embedded nut, single-nut embedded bolt also gained attention from a number of researchers by its improvement in terms of structural behavior [12,24,25]. Dedic and Klaiber was the first to introduce a single embedded nut as bolted shear connector in composite beam for rehabilitation work [24].…”

Section: Single-nut Embedded Boltmentioning

confidence: 99%

“…6. Push-out test [12] Another push out test has been investigated by Pavlovic on 16 mm diameter single embedded with the aim to improve the competitiveness of bolted shear connectors by focusing in detail with initial slip in hole of a bolted shear connector from prefabrication and cyclic loading point of view [25]. The result stated that 95% shear resistance achieved by bolted shear connectors when compared to headed studs.…”

Section: Single-nut Embedded Boltmentioning

confidence: 99%

Structural Behavior of Steel-Concrete Composite Beam using Bolted Shear Connectors: A Review

et al. 2018

View full text Add to dashboard Cite

Conventional steel-concrete composite beams have been recognized to exhibit stronger structural characteristics, in terms of strength and stiffness, when compared to pure steel or reinforced concrete beams. However, currently most steel beam is fully attached to the concrete slab; this means that the shear connectors are welded through the steel decking on to the steel beam and cast into concrete slab to fulfill the necessary shear connection. Recently, the deconstruction and reuse of the components almost impossible. In order to achieve a sustainable structural system, precast concrete slabs are attached to a steel beam using bolted shear connectors in prefabricated holes have been introduced as an alternative to the conventional connectors in steel -concrete composite beam system. This paper reviews the structural behavior of composite beam system such as the strength, stiffness, slip behavior, failure mode and sustainability obtained by experiment and numerical studies in order to address the applicability and efficiency of the composite beams having precast concrete slabs and bolted shear connectors.

show abstract

“…In a real composite beam the oversize hole would have to be larger in order to allow for production tolerances and feasibility of construction, which is discussed in [14]. The influence of the bolt clearance and penetration of the threads into the hole and level of preloading on initial slip and force-slip behaviour are discussed in [11] and [16] respectively.…”

Section: Push-out Testsmentioning

confidence: 99%

FE validation of push‐out tests

Pavlović

Veljković

2017

Steel Construction

Self Cite

View full text Add to dashboard Cite

The prefabrication of concrete slabs reduces construction time and the total life cycle cost of composite steel‐concrete buildings and bridge decks. Using bolts as shear connectors embedded in prefabricated concrete slabs enables reuse and easy replacement of slabs as structural members suitable for a circular economy construction concept. The results of static push‐out experiments on M16 and M24 bolts, grade 8.8, are shown here. The focus is on the validation of advanced finite element (FE) modelling by experiments. Damage material models for bolt and concrete slab were used and the most realistic preloading of the bolts modelled with threads was achieved by turning the nut in the FE model. An explicit dynamic solver with mass scaling function was used for quasi‐static analysis including fracture. Two failure modes obtained in experiments – bolt shear and concrete crushing – were realistically modelled by the FEA, which shows that the model is suitable for a parametric study leading to theoretical models of failure modes and slip capacity of the shear connection. Results indicate that the bolts with nuts on both sides of the steel flange can be successfully used as demountable shear connectors.

show abstract

Headed Shear Studs versus High-Strength Bolts in Prefabricated Composite Decks

Cited by 23 publications

References 8 publications

08.08: Prefabricated demountable concrete and FRP decks in composite structures

08.08: Prefabricated demountable concrete and FRP decks in composite structures

Structural Behavior of Steel-Concrete Composite Beam using Bolted Shear Connectors: A Review

FE validation of push‐out tests

Contact Info

Product

Resources

About