PCI eLearning Course T215: Design and Detailing of Full-Depth Precast Concrete Deck Panels-Analysis of Full Depth Precast Concrete Bridge Deck Panels

Analysis of Full Depth Precast Concrete Bridge Deck Panels

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The analysis presented in this paper focuses on the use of full-depth precast concrete bridge deck panels for the replacement and rehabilitation of deteriorated bridge decks. The objective of the study was to determine the amount of post-tensioning needed in the longitudinal direction to keep the transverse joints in compression. The analysis was performed using finite element modeling of selected simply supported and continuous bridges. <br /><br />For simply supported bridges, a minimum prestress level of 200 psi (1.4 MPa) was found to be necessary to secure the tightness of the transverse joints. For continuous bridges, a prestress level of 450 psi (3.1 MPa) over the interior supports was needed. <br /><br />The study also evaluated the durability, performance, and cost-effectiveness of full-depth precast concrete bridge decks. The use of precast panels was found to have minimal interference with traffic and resulted in a reduction in construction time. The analysis also determined the most effective materials and joint configuration for this type of construction. <br /><br />The results of the analysis have been applied in several bridge deck replacement projects in Illinois. These projects have implemented the design recommendations and construction procedures presented in the study.

Keywords

precast concrete bridge deck panels

replacement

rehabilitation

post-tensioning

transverse joints

finite element modeling

prestress level

durability

construction time reduction

bridge deck replacement projects