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FHWA > Advancing Steel and Concrete Bridge Technology
Welcome

Welcome to the sharepoint site for Advancing Steel and Concrete Bridge Technology to Improve Infrastucture Performance, owned and managed by the Federal Highway Administration's Office of Bridge Technology.

This site serves as a colloboration and communication point for our work being conducted in cooperation with Lehigh University under a 5-year Cooperative Agreement signed on September 30, 2011. Subawardees also include Univ. of Delaware, Univ. at Buffalo, Modjeski and Masters, and Corven Engineering.

The Federal Highway Administration (FHWA) Office of Bridge Technology (HIBT) develops regulations, policies, and guidelines to ensure the successful delivery of the national bridge program. In cooperation with the Office of Infrastructure Research and Development (HRDI), HIBT supports advancement of state-of-the-art technologies and provides leadership in the deployment of such technologies to improve the condition and durability of the nation’s bridges and highway structures. In this context, “technology”  has broad definition and can refer to engineering materials, systems, criteria, tools, and/or  techniques. To the extent possible, FHWA seeks to stimulate new technologies during   hands-on design and construction reviews of major and unusual bridges and tunnels.    National leadership for standard practice is provided through the development of reports,  manuals, guidance, and training on design, construction, evaluation, and maintenance in the relevant areas of bridge engineering.
We hope you find this site to be informative, as well as effective in knowledge transfer to promote improvement of nation's infrastructure performance.  
 

Sincerely,

Brian Kozy

Senior Bridge Engineer - Steel

and

Reggie Holt

Senior Bridge Engineer - Concrete

US Dept of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
(202) 493-0341

 

 Reference Links

 
 

 Program and Tasks

 
  
Description
  
The scope of this cooperative agreement may include the following types of activities:
 
·         Conduct surveys of practice of bridge performance
·         Conduct data collection and analysis
·         Perform literature search and/or research studies
·         Conduct feasibility studies
·         Document demonstration projects
·         Develop specifications and criteria
·         Develop of manuals and handbooks
·         Prepare and deliver training and workshops
·         Perform analysis
·         Conduct technical review
 
A list of specific tasks were defined in the Agreement and they are shown below. These task items were intended to be broad topic areas, with the final detailed scope of work to be determined after team negotiation and with industry and other stakeholder input.
  
Development of Criteria for Refined Analysis for the Purpose of Improving the Evaluation and Design of Bridges
 
Develop guidelines, protocols, and design specification criteria for bridge design and evaluation by modern, refined analytical techniques. The criteria will focus on fundamentals of Finite Element Analysis (FEA) and common applications such as steel and concrete girder bridges. 
 
At a minimum, this task will consist of the development of the following:
 
Ÿ          A comprehensive summary of FEA fundamentals for practicing bridge engineers for         proper application such as element formulation, meshing, composite section modeling,             stress   analysis, loads, and boundary conditions.
Ÿ          Protocols for refined bridge modeling, load application, and results extraction.
Ÿ          Guidelines for advanced problems such as time-dependent effects, stability, nonlinear       response, fatigue and fracture.
Ÿ          Techniques for model verification.

  
Load and Resistance Factor Design (LRFD) Specifications and Manual of Refined Analysis for the Purpose of Evaluation and Design of Bridges
This task builds upon the work done in Task 1.  The primary focus of this phase is development of AASHTO LRFD specifications and comprehensive guidance.
At a minimum, this task will consist of the following:
Ÿ          Study the implications of using FEA to the safety index required by AASHTO LRFD.
Ÿ          Development of protocols for use of FEA local stresses with AASHTO LRFD.
Ÿ          Development of necessary AASHTO LRFD changes and bring to ballot.
Ÿ          Development of benchmark problems that demonstrate the accuracy of modeling
            techniques and serve as verification target and quality assurance mechanism for
            commercial software.

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10/2/2012 3:16 PM
 

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