|Project Name:||Development of a Family of Ultra-High Performance Concrete Pi-Girders|
Office of Infrastructure Research and Development |
|Team:||Bridge and Foundation Engineering Team|
Infrastructure Research and Technology Strategic Plan and Roadmap|
|Project Description:||This project looks to engage the recently developed Ultra-High Performance Concrete (UHPC) material model to facilitate computational model-based development of a family of structurally optimized prestressed concrete bridge girders. Prior structural testing of a novel UHPC Pi-girder combined with prior computational modeling form the basis for the study will be used. Decked girders spanning up to 135 feet will be developed.|
|Start Date:||January 1, 2011|
|End Date:||September 30, 2013|
|Goals:||The key project objective is to develop a set of prestressed girders that engage the advanced mechanical and durability properties of Ultra-High Performance Concrete (UHPC) for the purpose of facilitating the rapid construction of robust bridge systems.|
|Test Methodology:||Engage results from prior physical testing and computational modeling completed at Turner-Fairbank Highway Research Center to develop new Pi-girder shapes.|
|Expected Benefits:||The research project will deliver to the bridge design community a concept wherein prestressed concrete superstructures can span longer distances at shallower depths than previously possible. This research will likely spur further developments that will lead to eventual deployment of these structural systems in the US bridge inventory.|
|Deliverables:||1. Name: Development of a Family of Ultra-High Performance Concrete Pi-Girders|
Product Type(s): Research report, Techbrief
Description: TechBrief summarizing the results of the study.
2. Name: Development of a Family of Ultra-High Performance Concrete Pi-Girders
Product Type(s): Research report
Description: Full report describing the results of the research study.
3. Name: Extending the UHPC Pi-Girder Concept: Optimized Cross-Sections for Spans Up To 135 Feet
Product Type(s): Article
Description: Zhang, G., and Graybeal B., “Extending the UHPC Pi-Girder Concept: Optimized Cross-Sections for Spans Up To 135 Feet,” Proceedings, PCI National Bridge Conference, Dallas, Texas, September 2013, 20 pp.
Bridges and other structures|