Viability and performance of demountable composite connectors

Moynihan, Muiris C.; Allwood, Julian M.

doi:10.1016/j.jcsr.2014.03.008

Cited by 90 publications

(28 citation statements)

References 11 publications

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“…However, the use of bolted shear connectors has a tremendous advantage because of their ease in dismantling and demountable processes (Pavlović, et al, 2013;Moynihan and Allwood, 2014), if reinstatement of the concrete slab is required for structural purpose. Pavlovic et al (2013) conducted push-out test on four specimens with bolted shear connectors.…”

Section: Mustaphamentioning

confidence: 99%

“…The authors concluded that post-installed bolted shear connectors were feasible for the strengthening of the bridge girders. The performance and viability of bolted shear connectors as demountable connectors in composite system was investigated by Moynihan and Allwood (2014). Their findings pointed out that the bolted shear connectors possess good strength capacities.…”

Section: Mustaphamentioning

confidence: 99%

See 1 more Smart Citation

Bolted Shear Connectors Performance in Self-Compacting Concrete Integrated with Cold-Formed Steel Section

Lawan

Tahir

Mirza

2016

Lat. Am. j. solids struct.

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In conventional composite construction involving hot-rolled steel section, the composite action is usually achieved by using conventional headed shear studs connectors. However, use of headed studs is not practical for cold-formed steel (CFS) section due to its very thin form that is difficult to weld. A suitable bolt and nut type shear connector was proposed; experimental tests were carried out to evaluate its performance. This study also investigated the use of Self-Compacting Concrete (SCC) integrated with CFS by means of bolted shear connectors to develop composite action. Therefore, the objective of this paper was to investigate the performance of bolted shear connectors in SCC integrated with CFS section as composite beam system. Eighteen push-out test specimens comprising of M12, M14 and M16 sized bolted shear connector of grade 8.8 with longitudinal spacings of 150 mm, 250 mm and 300 mm centers were fabricated, cast and tested until failure. The experimental results showed that all bolted shear connectors possessed a good shear resistance capacity. Not much difference in strength capacity of specimens with M14 and M16 bolted shear connectors was found, perhaps due to CFS failure. Varying the size and longitudinal spacing of the bolted shear connectors revealed that the connectors' strength capacity changed slightly between M14 and M16 bolts specimens but, significantly for M12 bolt specimens.

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Section: Mustaphamentioning

confidence: 99%

Section: Mustaphamentioning

confidence: 99%

Bolted Shear Connectors Performance in Self-Compacting Concrete Integrated with Cold-Formed Steel Section

Lawan

Tahir

Mirza

2016

Lat. Am. j. solids struct.

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“…It was found that the Gr8.8 bolted shear connectors with a single embedded nut achieved about 95% of the shear resistance under static loads, but the stiffness was reduced by 50% compared to the welded headed stud. A fullscale composite beam test with profiled metal decking was reported by Moyniah and Allowed [9] using M20 Gr 8.8 bolts as shear connectors in a composite beam. The research showed that these bolts may be used as demountable connectors and they behaved in a similar way to welded connectors and the slabs can be taken off easily from the steel beam.…”

Section: Introductionmentioning

confidence: 99%

Use of bolted shear connectors in composite construction

Dai

Lam

Sheehan

et al. 2018

Proceedings 12th International Conference on Advances in Steel-Concrete Composite Structures - ASCCS 2018

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Composite beam incorporated steel profiled decking has been extensively used for multistorey buildings and is now one of the most efficient and economic form of flooring systems. However, the current composite flooring system is not demountable and would require extensive cutting on site during demolition, and the opportunity to reuse the steel components is lost even though these components could be salvaged and recycled. This paper presents the use of high strength bolts as shear connectors in composite construction, the shear behaviour and failure modes were observed and analysed through a series of pushoff tests and numerical simulation. The results highlighted the structural behaviour of three different demountable shear connection forms in which continuous slabs or un-continuous slabs were used. Numerical models were validated against experimental observation. Both experimental and numerical results support the high strength bolts used as demountable shear connectors and lead to a better understanding to the behaviour of this form of shear connectors.

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“…Moreover, using prefabrication and deconstruction in conjunction with steel frames can drastically facilitate the full recycling and reuse of the construction materials and structural components. Accordingly, over the past decade several attempts have been made to enhance the sustainability of steel structures by either using high-strength durable steels [1][2][3][4] or developing prefabricated demountable steel framing systems [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]; however, the application of HSS in conjunction with deconstructable frames remains unexplored and this is the main focus of the present study.…”

Section: Introductionmentioning

confidence: 99%