Illinois’s First Precast Deck Panel Bridge with UHPC Joint

摘要

As a part of the $450 million Circle Interchange Project in Chicago, the existing Peoria Street Bridge over I-290 and the Chicago Transit Authority (CTA) is being replaced with a 3-span, continuous, galvanized steel plate girder bridge. The bridge is providing the main access to the CTA station among three adjacent stations. Therefore, constructing the new bridge in a shorter time is one of the main design considerations.rnFull-depth precast deck systems have been gaining popularity as an Accelerated Bridge Construction (ABC) method. As stated in the FHWA’s ABC website, use of full depth precast deck is the most popular ABC method. Utilizing the superior characteristics of Ultra High Performance Concrete (UHPC) enables the simplification of the precast panel fabrication and installation processes. This simplified design provides the owner with improved tolerances, reduced risk, increased speed of construction, an overall cost savings in construction in some cases and a more durable, longer lasting bridge deck solution. With these reasons, Illinois’s first Precast Deck Panel Bridge with UHPC joints is proposed for this bridge.rnIn this paper, the mechanical properties for UHPC and research on UHPC joints for precast deck panels are reviewed. The design procedure for precast deck panels with UHPC joints and UHPC joint details are presented. Other non-conventional design such as semi-integral abutment on tall wall is also presented.