Abstract
The article handles potential approaches to design and determination of total load capacity of foundation slabs and floors. The research is focused on punching shear failure of reinforced ground supported slab. The article presents detailed results of the experiment made and advanced numerical modelling based on nonlinear analysis and application of fracture-plastic model. The experiment made included a 2.0 × 1.95 m reinforced concrete slab-on-ground of 120 mm thickness. The experiment was followed by a parametric study of total load capacity calculation with nonlinear analysis which is supplemented by calculations based on existing design model code.
Highlights
The punching shear resistance of reinforced concrete ground supported slab represents a wide category of concrete structure and subsoil interaction problems
The article deals with punching shear failure of reinforced concrete slabs with low thickness exposed to high load in interaction with the ground
The article deals with research in the field of analysis of concrete slabs with low thickness exposed to high load in interaction with subsoil
Summary
The punching shear resistance of reinforced concrete ground supported slab represents a wide category of concrete structure and subsoil interaction problems. Because of complexity of the task the design models are prepared attempting to appropriately simplify the issue or applying many limitations This enables to obtain the required design criteria and provide safety for the selected cases. The design codes for this area already known include ACI 318-08 (2008), Norm SIA 262 (2003) and EC2 (2006) which is based on Model Code 1990 (1993) and in which case it should be noted that there is Model Code 2010 (2012) This recommendation enables to use the typical approaches mentioned above for the design as well as application of advanced calculation simulations which reflect the real concrete behaviour. Often the typical approach to concrete structure designing using simplified calculation models is not well suited and applicable. For those reasons novel innovative approaches to designing are to be searches for
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