Title:
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Shear transfer behavior in composite slabs under 4-point standard and uniform-load tests
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Author:
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Soltanalipour, Milad; Ferrer Ballester, Miquel; Marimón Carvajal, Federico; Holomek, Josef; Bajer, Miroslav; Melcher, Jindrich; Karmazínová, Marcela
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Other authors:
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Universitat Politècnica de Catalunya. Doctorat en Anàlisi Estructural; Universitat Politècnica de Catalunya. Departament de Resistència de Materials i Estructures a l'Enginyeria; Universitat Politècnica de Catalunya. REMM - Recerca en Estructures i Mecànica de Materials |
Abstract:
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The 4-point bending test, prescribed by most standards, is the conventional test used to determine the shear resistance of steel-concrete composite slabs, whereas loading requirements are commonly specified in terms of uniform load in standard codes. This article shows a comparison between the results of these two load arrangements. This comparison has been made through both experimental tests and FEM simulations points of view. Both approaches show that the 4-point load arrangement provides higher shear strength than uniform load. The cause of this difference has been studied by means of a realistic FEM approach focusing on the slip mechanics and the 3D contact forces in the steel-concrete interface: longitudinal (shear), transversal (interlocking) and vertical (clamping). It has been concluded that the distribution of contact forces is different from the one load arrangement to the other, mainly because of differences in the distribution of concrete cracks. This article is the result of cooperation between UPC-BarcelonaTech, where the 4-point bending tests and the FEM models were developed, and AdMaS-BUT where the uniform load tests were carried out by means of a vacuum system. The slabs were made with conventional open-rib trapezoidal profile and the Eurocode-4 provisions have been followed in both testing procedures. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures -Composite construction--Testing -Composite slabs -Uniformly distributed loading -m-k 4-point bending -Shear transfer -Clamping -Construccions mixtes |
Rights:
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Document type:
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Article - Submitted version Article |
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