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USE OF PRECAST CONCRETE DECK PANELS
SUMMARY OF RESEARCH
PANEL TYPES 1, II, AND III
| 题名： | USE OF PRECAST CONCRETE DECK PANELS SUMMARY OF RESEARCH PANEL TYPES 1, II, AND III |
| 作者： | R. A. Cook, J. M. Lybas, A. M. Bevilacqua and J. A. McIntyre |
| 关键词： | bridge decks, precast concrete, precast bridge decks, bridge deck formwork, welded wire fabric |
| 摘要： | The objective of this research was to investigate the feasibility of using precast concrete deck panels in place of traditional formwork for AASHTO girder type bridges. The precast deck panels span between girders, support the weight of a topping slab, and act as a composite unit with a topping slab in order to resist live loads. This research focused specifically on a new joint details not used elsewhere. A two part testing program was established in order to investigate the structural adequacy of the new systems. The first set of tests examined the strength of the precast panel itself under construction loads, with specific attention to the support detail. The second set of tests dealt with the behavior of the total composite system under service, cyclic, and ultimate loads. All tests were designed to produce the most severe loading conditions at the panel to girder joint. Three types of panels were investigated. Type I incorporated a notched support scheme at the panel and girder flange joint. In Type II, steel angles were used to suspend the panel from the girder flange (this type was not pursued to a full composite test). Type HI, utilized a constant thickness panel supported directly on the girder flange (i.e., no bearing material). In all cases, welded wire fabric was used exclusively for the reinforcement. Results indicate that Types I and III provide viable systems for precast concrete deck panels. A summary of the test results for all three types of panels is presented in this report. Detailed information on the full testing program for each panel type can be found in the references given at the end of this report. These references are available from the Florida Department of Transportation |
| 报告类型： | 科技报告 |
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