Research on Rebar Connections Will Lead to Better Bridges

Posted: Nov 5, 2024

Researchers at Utah State University studied the connections between steel reinforcement bars embedded in concrete bridges to help bridge designers improve designs for accelerated bridge construction. The construction technique cuts construction time and costs, reduces risk for workers and the traveling public, improves quality assurance, and is more environmentally friendly. As adoption of the technique has grown, so has the use of grouted splice sleeve connections, mechanical couplers between two pieces of rebar that help maintain capacity, structural integrity, and continuity of joints between precast bridge elements. The USU research examined placement of the connections (e.g., in the base of piers vs. top of footings) to learn how that placement impacts load paths and dynamic behavior of bridges under normal loads and when subjected to low-velocity impact loading. Their work will lead to safer and longer-lasting bridges.

Andrew D. Sorensen, Ph.D.
former Utah State University faculty

Static and Dynamic Experimental Evaluation of Precast Columns with Grouted Splice Sleeve Connectors
MPC-24-541