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Abstract:The most common method used to design and analyze bridge decks, termed the traditional
method, treats a deck slab as if it were made of strips supported by inflexible girders. An
alternative – the empirical method – treats the deck slab as a unit that resists load primarily
through internal arching action. The mechanics of the empirical method are more complex, but
the design process is simpler, and it offers advantages in economy and constructability – e.g.,
the empirical method requires much less internal reinforcement. A few states allow the empirical
method; however, in Florida, this method awaits
verification testing for phased construction and
widening situations before it can be allowed in the
design guidelines.
University of North Florida researchers tested the
efficacy of the empirical method for bridge deck
design, in a widening situation using a full-scale
bridge deck and support structures.
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