Experimental Analysis Of Composite
Steel-concrete Slabs
Author(s)
R. Karásek, J. Holomek, M. Bajer & J. Barnat
Abstract
Composite structures fabricated from thin-walled steel sheeting and concrete
slabs are especially suitable for roof and floor bearing structures. Using
embossments for the shear connection between the sheeting and the concrete
simplifies and accelerates the construction process because it ensures the
composite action of the two materials without any need for additional
reinforcement. This article is focused on this type of connection. It contains a
short review of thin-walled sheeting manufactured in Western Europe and
presents results obtained from the experimental testing of specimens. These
specimens were tested by vacuum loading and by cyclic loading in four-point
bending tests. Small scale specimen tests were performed to determine the shear
behaviour and to adjust numerical models.
Keywords: composite action, cold-formed steel sheet, concrete slab, shear
connection, embossment.
1 Introduction
In order to ensure composite action in steel-concrete slabs, connection members
must be used. Cold-formed embossments may be an effective and easily
producible solution for this problem. Manufacturers in Europe offer several types
of thin-walled sheeting with embossments: self-locking with dimples on the
upper flange (SHR 51, Cofrastra 40) – fig. 1(a); self-locking with dimples on the
slanted sides (Cofrastra 70) – fig. 1(b); trapezoidal with dimples on the upper
flange (Cofraplus 220) – fig. 1(c); trapezoidal with dimples on the slanted sides
(Cofraplus 60, Hi-Bond A55, Hi-Bond A75, Haircol 55S, Haircol 80S, Prins
Keywords
composite action, cold-formed steel sheet, concrete slab, shear
connection, embossment.
Related Book
Other papers in this volume
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