Design of Efficient concrete bridge deck slabs

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The purpose of the proposed research is to develop a method for designing concrete bridge deck slabs that accounts for the beneficial effects of arching action, and that is valid for any given geometry and all types of ferrous reinforcement (reinforcing steel, prestressing steel, and steel fibres). It is anticipated that this research will produce a major step forward relative to the empirical method of deck slab design which is included in current Canadian and US bridge design standards. This method enables designers to account for arching action in the design of deck slabs within a relatively limited range of parameters. Within this range, it leads to reduced quantities of reinforcing steel in deck slabs relative to the reinforcement that would be required considering only bending behaviour. By shifting the basis by which arching action can be considered in design from an empirical to a rational one, the proposed research will significantly extend the range of situations in which the benefits of arching action can be exploited.