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Research and Development (R&D) Project Sites

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Project Information
Project ID:   FHWA-PROJ-11-0003
Project Name:   Development of a Family of Ultra-High Performance Concrete Pi-Girders
Project Status:   Completed
Start Date:  January 1, 2011
End Date:  September 30, 2013
Contact Information
Last Name:  Graybeal
First Name:  Benjamin A (Ben)
Telephone:  202-493-3122
E-mail:  benjamin.graybeal@dot.gov
Office:   Office of Infrastructure Research and Development
Team:   Bridge and Foundation Engineering Team [HRDI-40]
Program:   Ultra-High Performance Concrete with Ductility
Laboratory:   Structures Laboratory
Project detail
Roadmap/Focus area(s):   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.
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.
Product Type:   Article
Research report
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:   TechBrief summarizing the results of the study.
FHWA Topics:   Roads and Bridges--Design
TRT Terms:   Concrete Structures
FHWA Disciplines:   Design
Construction and Project Management
Subject Areas:   Bridges and other structures


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Turner-Fairbank Highway Research Center | 6300 Georgetown Pike | McLean, VA | 22101