Time-Dependent Deflection of Composite Concrete Slabs

Gholamhoseini, Alireza; Gilbert, Raymond Ian; Bradford, Mark A.; Chang, Zhen‐Tian

doi:10.14359/51686629

Cited by 17 publications

(15 citation statements)

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“…Subsequent work focussed at the time-dependent response of composite slabs and post-tensioned composite slabs, e.g. [8][9][10][11]. Theoretical models have also been proposed in the last few years to capture the effects of the shrinkage gradient on the overall structural response, e.g.…”

Section: Time-dependent Behaviour Of the Concretementioning

confidence: 99%

“…The proposed model is validated in this section against two sets of experimental long-term tests carried out on composite slabs [11,18] and post-tensioned composite slabs [9]. The composite slabs consist of five specimens cast on a K70 trapezoidal profiled steel sheeting [19] with a trough height of about 70 mm.…”

Section: Validationmentioning

confidence: 99%

“…The composite slabs consist of five specimens cast on a K70 trapezoidal profiled steel sheeting [19] with a trough height of about 70 mm. The KF70 samples were placed in their simply-supported configuration at 7 days from casting and different loading history were applied to them as detailed in [11,18]. Comparisons between the measured results and those calculated with the proposed approach relying on both a non-uniform shrinkage profile and on a uniform shrinkage distribution are depicted in Fig.…”

Section: Validationmentioning

confidence: 99%

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08.61: A new approach for the serviceability limit state design of composite steel‐concrete slabs

Ranzi

2017

ce papers

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Composite floors are a well-established cost-efficient and effective form of construction. They combine the advantages of two flooring systems that consist of post-tensioned slabs in concrete structures and of composite slabs in steel structures. These flooring systems include thin-walled profiled steel sheeting, non-prestressed reinforcement, concrete and prestressing strands in posttensioned slabs. The particularity of composite slabs rely on the ability of the profiled steel sheeting to act as permanent formwork and, once the concrete has hardened, as external reinforcement. This paper provides a brief overview of a new service model for the design of composite and posttensioned steel-concrete floor systems. The serviceability limit state requirements are important for composite floor applications because they usually represent their governing criteria. The proposed approach focuses on the serviceability limit state requirements associated with deflections and places particular attention on the influence of shrinkage on the overall structural response. Recent research has highlighted the occurrence of a non-uniform shrinkage profile through the composite slab thickness that originates form the inability of the concrete to dry from its underside due to the presence of the profiled steel sheeting. The proposed procedure is validated against selected experimental results available in the literature for composite and post-tensioned composite slab samples.

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Section: Time-dependent Behaviour Of the Concretementioning

confidence: 99%

Section: Validationmentioning

confidence: 99%

Section: Validationmentioning

confidence: 99%

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08.61: A new approach for the serviceability limit state design of composite steel‐concrete slabs

Ranzi

2017

ce papers

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show abstract

“…Esses fatores foram desenvolvidos empiricamente a partir das medidas experimentais da deformação induzida pela distribuição da retração, de acordo com Gholamhoseini (2014aGholamhoseini ( , 2016aGholamhoseini ( , 2016b.…”

Section: Distribuição Parabólica Da Retração Não-uniformeunclassified

“…A correção para a laje com fôrma de aço incorporada define uma espessura média , dada pela área dividida pela largura da seção transversal e são dadas pelas Equações 4.15 e 4.16 propostas por Gholamhoseini (2014a:…”

Section:  Modelo Aci 209 2r (2008)unclassified