A novel methodology for quantifying the performance of constructed bridges in cold regions : [project brief].
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2014-04-01
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Abstract:This report presents a two-part research program examining the performance of constructed
bridges in a cold region, represented by those in the State of North Dakota, and the behavior of
concrete members strengthened with carbon fiber reinforced polymer (CFRP) composite sheets.
For the first phase of the research, 1,328 decks are sampled from a 15-year inspection period. These
data are statistically characterized and probabilistically analyzed. The second part of the research
concerns predictive investigations into the axial behavior of concrete exposed to aggressive service
environments. Two types of concrete cylinders are studied: unconfined and confined with CFRP
sheets. The aggressive environment and service traffic load are represented by freeze-wet-dry cycles
with various levels of instantaneous compression load varying from 0% to 60% of the capacities
of the unconfined and confined control concrete. Research approaches include three-dimensional
deterministic finite element and probabilistic models, associated with a previously conducted
experimental program.
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