The behaviour of profiled steel sheet/concrete slabs

Shobaki, IEH

Abstract

The work presented in this thesis is concerned with the effect of shear-bond on the behaviour of profiled steel sheet/concrete composite slabs. A review of the previous
work carried out to investigate the influence of shear bond in composite construction and the factors which may affect shear bond resistance is presented and discussed.
Also, the different empirical shear-bond equations proposed and design methods for composite slabs are reviewed. A description of push-off and pull-out tests follows and several examples of concrete/profiled steel sheeting units were tested and the results discussed. These small scale tests provided information on the load/slip relationship which was used in the subsequent modelling of the full-scale composite slabs. Fullscale
composite slab tests are then considered together with a discussion of results.
These are analysed using the regression approach of British Standards and the Eurocode 4. Comparison is made with the design values using the partial interaction method. The comparison indicates that both design methods are valid with the regression approach being slightly more conservative.
Finite element methods and their advantages are reviewed and the ANSYS software is introduced together with it's proprietary elements, material models and contact elements. This is followed by a description of three-dimensional finite element modelling of composite slabs (small and full scale). The load versus deflection, and
load versus slip provide a comparison between the numerical analysis and test results.
The finite element analysis of the composite slabs was successful. The failure load of each slab was modelled satisfactorily using the contact stiffness from the small-scale tests modified by a small percentage (less than 10%). A close correlation between the experimental and finite element analysis predictions for the load/slip and
load/deflection behaviour was also obtained.
Three-dimensional finite element modelling of embossments with different parameters for the steel sheet and concrete was carried out and conclusions drawn.
The general conclusions of the work follows together with recommendations for future research.

Citation

Shobaki, I. The behaviour of profiled steel sheet/concrete slabs. (Thesis). University of Salford, UK

• Thesis Type: Thesis
• Deposit Date: Jun 10, 2009
• Publicly Available Date: Jun 10, 2009
• Additional Information: Additional Information : PhD supervisor: Mr. D. C. O'Leary
• Award Date: Oct 1, 2000