Composite connections in slim-floor system: An experimental study

Nardin, Silvana De; Debs, Ana Lúcia Homce de Cresce El

doi:10.1016/j.jcsr.2011.07.006

Cited by 18 publications

(20 citation statements)

References 3 publications

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“…Results showed that the steel connection behaves as a flexible one but, when the slim floor is added, the contribution of the negative reinforcement of the slab makes the connection capable of transmitting moments, so that it becomes more efficient (De Nardin and El Debs, 2012). The study considered also the use of different types of slabs, and the main conclusion was the importance of considering the slab's contribution to the rigidity of the connection.…”

Section: Figurementioning

confidence: 99%

State of the art of steel–concrete composite structures in Brazil

Nardin¹,

Debs²

2013

Proceedings of the Institution of Civil Engineers - Civil Engin

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Steel-concrete composite structures are now increasingly used in Brazil and are the subject of significant research by the country's leading universities. This paper summarises the typology, state of the art and usage of steelcomposite structures from a Brazilian perspective. It presents the concepts, definitions and design philosophy for basic structural elements, including composite slabs, beams and columns, and also for various types of connections.Summaries of the extensive research findings are presented for each composite element. The paper concludes with a call for all the research results to be condensed into a single design manual, which in turn will help Brazil's fastgrowing construction industry take full advantage of the benefits of composite construction techniques.

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Section: Figurementioning

confidence: 99%

State of the art of steel–concrete composite structures in Brazil

Nardin¹,

Debs²

2013

Proceedings of the Institution of Civil Engineers - Civil Engin

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“…Tests on bare steel and on composite connections [17] showed that the composite connection behaved as a semi-rigid connection and the bare steel connection behaved as a nominally pinned connection. A significant contribution of the slim floor to the moment capacity of the shear connection was observed.…”

Section: Introductionmentioning

confidence: 99%

Research on the Efficiency of Composite Beam Application in Multi-Storey Buildings

2020

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Over the past decade, several types of composite slim floor constructions have been used in multi-storey buildings in Lithuania. In order to study the efficiency of composite beam application in steel-framed multi-storey buildings, Thorbeam (A1), Deltabeam (A2), slim floor beam (A3) and asymmetric slim floor beam (A4) were chosen and evaluated according to nine assessment criteria (beam cost (K1), initial preparation on site (K2), installation time (K3), complexity of installation technology (K4), labour costs (K5), fire resistance (K6), load bearing capacity (K7), beam versatility (K8), and availability of beams (K9)). First, the significance of the rating criteria was selected and the order of the ranking criteria was obtained (K1˃K7˃K3˃K6˃K4˃K5˃K2˃K8˃K9) by means of a survey questionnaire. Second, the beams were ranked according to the points given by the questionnaire respondents as follows: 160 points were given to A2, 144 points to A1, 129 points to A4, and 111 points to A3. Deltabeam is considered to be the most rational alternative of the four beams compared. Calculations done using the Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS) analysis method revealed that composite beam A2 was the best slim floor structure alternative for an eight-storey high-rise commercial residential building frame, A1 ranked second, A4 ranked third, and A3 ranked fourth. In addition, the four composite beams were compared to a reinforced concrete beam (A5) according to three assessment criteria (beam cost including installation (C1), beam self-weight (C2) and fire resistance (C3)). Deltabeam was found to be efficient for use as a slim floor structure in a multi-story building due to having the lowest cost, including installation, and self-weight, and the highest fire resistance compared to other composite beams studied. Although Deltabeams are 1.4 times more expensive than reinforced concrete beams, including installation costs, they save about 2.5% of the building’s height compared to reinforced concrete beams.

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“…The research showed that welding studs on the top flange of the steel shape can achieve considerable composite action and elastoplastic performance. Thereafter, Nardin and El Debs (2012) conducted a full-scale experiment of beam–column connections in composite slim floor beams, including bare steel connection and composite connection. The result showed that there were almost no steel–concrete slip at the interface between the composite plate and the steel beam at the free end, indicating that the steel shape and concrete worked together well.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on flexural performance of steel-reinforced concrete slim floor beams

Wei

Yang

et al. 2019

Advances in Structural Engineering

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In long-span floors, the use of composite slim floor beams can effectively improve the flexural stiffness and flexural capacity of the floor system. In order to strengthen the stiffness of the composite slim floor beams and achieve better fire resistance, an innovative steel-reinforced concrete slim floor beams is presented in this article. To investigate the flexural performance of the steel-reinforced concrete slim floor beams, static loading experiments were carried out on six specimens. The parameters of the test were the height of slim floor beams and the type and size of steel shape in the steel-reinforced concrete slim floor beams. On the basis of the experiment, the bending failure modes, flexural stiffness, and flexural capacity of the steel-reinforced concrete slim floor beams were studied comprehensively. The test results indicated that the steel-reinforced concrete slim floor beams exhibited great flexural capacity, large stiffness, and high ductility. The calculation formulas of flexural stiffness and flexural capacity were also proposed in this article. The analysis of flexural performance of the steel-reinforced concrete slim floor beams can provide a significant foundation for further research.

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Composite connections in slim-floor system: An experimental study

Cited by 18 publications

References 3 publications

State of the art of steel–concrete composite structures in Brazil

State of the art of steel–concrete composite structures in Brazil

Research on the Efficiency of Composite Beam Application in Multi-Storey Buildings

Experimental study on flexural performance of steel-reinforced concrete slim floor beams

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