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Research and Development (R&D) Project Sites

Project Information
Project ID:   FHWA-PROJ-12-0097
Project Name:   Development of Advanced Connection Systems for Adjacent Concrete Box Beams
Project Status:   Active
Start Date:  October 1, 2012
End Date:  October 31, 2014
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:   IRT (Infrastructure Research and Technology)
Laboratory:   Structures Laboratory
Project detail
Roadmap/Focus area(s):   Infrastructure Research and Technology Strategic Plan and Roadmap
Project Description:   Project includes the full-scale structural testing of four independent connection systems for adjacent box beams. Each system will be tested under millions of cycles fatigue loads in order to replicate decades of distress on the bridge system. Two of the connection systems will include conventional grout and transverse posttensioning. Two of the connection systems will include field-cast Ultra-High Performance Concrete (UHPC) and no transverse posttensioning. Findings should include recommendations of anticipated behavior from good current practice systems as well as advanced systems that potentially offer simplified construction and better long-term performance.
Goals:   This objective of this project is to advance the state-of-the-practice for longitudinal connections between adjacent box beams, thus allowing broader use of this very cost effective bridge superstructure system.
Product Type:   Article
Test Methodology:   Full-scale physical testing of structural systems and associated analysis.
Expected Benefits:   The project will assist bridge owners in their future successful deployments of adjacent box beam bridges.
Deliverables: Name:
Product Type(s): Article
FHWA Topics:   Roads and Bridges--Construction and Project Management
TRT Terms:   Concrete Structures
High Performance Concrete
Bridge Construction
FHWA Disciplines:   Construction and Project Management
Subject Areas:   Bridges and other structures


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