Longitudinal shear resistance of PVA-ECC composite slabs

The aim of this research is to investigate experimentally the effect of adding shear connectors to the composite deck slabs which have various geometries of steel sheeting. The behavior and resistance of composite slab is basically depending on the development of longitudinal shear resistance. In this study six specimens of composite deck slabs which have different types of geometries of steel sheets (trapezoidal, triangle and T-shapes) with dimensions (1850mm x 500mm x 110mm) were casted and tested under four-point load in presence and absence of shear connectors in order to evaluate the behavior and longitudinal shear resistance of composite slabs. The results show that the adding shear connectors to composite slabs with trapezoidal shape and triangle shape act to increase ultimate load capacity by 22.2% and 17.8% respectively as compared with composite slabs without shear connectors while effect of adding shear connectors to the composite slab with T-shape was very little or can be neglected. As well as the adding shear connectors to composite slabs with trapezoidal shape and triangle shape act to decreasing the deflection as compared with the same load also act to enhance the general performance of slabs

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Comparative study on longitudinal shear resistance of light weight concrete composite slabs with profiled sheets

Engineering Structures ◽

10.1016/j.engstruct.2019.109738 ◽

2019 ◽

Vol 200 ◽

pp. 109738 ◽

Cited By ~ 1

Author(s):

Dr.K. Aarthi ◽

E. Jeyshankaran ◽

N. Aranganathan

Keyword(s):

Comparative Study ◽

Shear Resistance ◽

Longitudinal Shear ◽

Light Weight ◽

Composite Slabs ◽

Light Weight Concrete

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Composite Slabs with Prepressed Embossments – Longitudinal Shear Resistance

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.769.289 ◽

2015 ◽

Vol 769 ◽

pp. 289-293

Author(s):

Josef Holomek ◽

Miroslav Bajer ◽

Jan Barnat ◽

Martin Vild

Keyword(s):

Failure Mode ◽

Shear Failure ◽

Numerical Models ◽

Shear Resistance ◽

Longitudinal Shear ◽

Small Scale ◽

Bending Tests ◽

Composite Action ◽

Composite Slabs ◽

Shear Characteristics

Composite slabs with prepressed embossments present an effective solution for horizontal structures. Prepressed embossments ensure composite action after hardening of concrete. Longitudinal shear failure mode typically governs if the shear resistance of embossments is not sufficient for full composite action. Mutual separation of thin-walled sheeting from concrete and its deformation inside the rib is characteristic for this failure mode. Design methods for composite slabs use full scale bending tests in several series to determine their bearing capacity. A less expensive alternative is to use small-scale shear tests to determine shear characteristics of the sheeting. This paper presents detailed numerical models of slab in shear and models of slab in bending with and without embossments. These models are compared with previously performed experiments. Key WordsComposite slab; steel sheeting; concrete; prepressed embossment; longitudinal shear; experiment; numerical model

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Experimental study of the influence of friction at the supports on longitudinal shear resistance of composite slabs

Revista IBRACON de Estruturas e Materiais ◽

10.1590/s1983-41952017000500008 ◽

2017 ◽

Vol 10 (5) ◽

pp. 1075-1086 ◽

Cited By ~ 1

Author(s):

R. S. COSTA ◽

A. C. C. LAVALL ◽

R. G. L. SILVA ◽

F. C. RODRIGUES

Keyword(s):

Structural Engineering ◽

Shear Resistance ◽

Longitudinal Shear ◽

Shear Connection ◽

Composite Slabs ◽

Engineering Department ◽

Trapezoidal Profile ◽

Analytical Expressions ◽

Steel Deck

Abstract The aim of this work is to evaluate the behavior and strength of composite slabs considering the influence of the friction at the sheeting-concrete interface in the region of the support. Results from tests conducted in the Structural Engineering Department of Federal University of Minas Gerais (UFMG) were used. A Steel Deck 60 system was considered, which consists of a trapezoidal profile with “V” shaped embossments. Deflections, end slips and strains of the steel decks were measured, allowing for the analysis of the behavior of the composite slab system and for the determination of its failure mode. The influence of friction of the region of support in the longitudinal shear resistance was evaluated through the partial shear connection method, which also allowed for establishing criteria and determination of analytical expressions for calculating the ultimate load. Comparative analyses reveal that the influence of the friction of the region of support in the shear-bond resistance is more significant in composite slabs with short shear spans. Design expressions which incorporate friction will also be presented. Their application have demonstrated the efficiency of the method for evaluating the longitudinal shear resistance.

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