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Positive Moment Tests for Precast Concrete Panel-Decked Composite Bridges
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1987-09-01
[PDF-7.14 MB]
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Edition:Interim: September, 1981 - September, 1987
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Abstract:Bridge deck replacement using precast concrete panels minimizes replacement time as well as traffic interference. An experimental study consisting of static load test on a 1/3 scale model of a 60-ft long steel I-girder bridge with precast concrete panels connected with epoxy mortar and shear connectors to accomplish composite action is described. Three major static load tests were conducted. The first test was conducted on the bare steel stringers. The second was conducted with the precast concrete panels connected to the steel stringers only by pocket connections consisting of epoxy mortar and shear connectors. The third test was conducted with the precast panels connected to each other by built-in shear key joints grouted with epoxy mortar in addition to being connected by the pocket connection to the steel stringers. The results of the static load tests were evaluated as the 1/3 model went through a transition from non-composite to composite. Composite action was accomplished when the epoxy mortar of the pocket connections and shear key joins cured. No significant composite action was developed by the pocket connections alone.
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