Review: A Post-Tensioned Bridge Deck Slab's Construction

Abstract

The deck of a post-tensioned cast-in-place concrete slab bridge or any other design structure might be the focus of this paper's investigation towards optimizing embedded carbon emissions via the use of surrogate modeling. The ability to optimize structures in a logical and sequential manner is the primary value that this approach brings to the table. The strategy utilizes a sequential two-stage optimization process, the first stage being one of diversity, and the second stage being one of intensity of the search for optimal solutions. In the end, a heuristic optimization that is based on a Kriging metamodel is carried out in order to account for emissions as well as the distinguishing qualities of each design. If emissions were to be decreased, design advice would be to employ slendernesses as high as feasible, in the region of 1/30, which suggests a more substantial quantity of passive reinforcement. An optimized solution with fewer emissions than the sample that was evaluated. This increase in passive reinforcement is accounted for by a reduction in the measurement of active reinforcement as well as concrete. One further significant realization is that there is a correlation between lowering emissions and lowering costs. In addition, it has been shown beyond a reasonable doubt that reductions of more than 2% in the amount of emissions released into the air can be accomplished with an increase in costs.