Evaluating Concrete Girders with Non-compliant Shear Details
Many of the aging concrete bridges in the United States were designed prior to the nationwide adoption of the American Association of State Highway and Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) Bridge Design Specifications (BDS) that were first published in 1994. The current AASHTO LRFD BDS has shear design and detailing provisions that differ from older design standard specifications. Girders of older bridges often do not meet the shear requirements of the current AASHTO LRFD BDS. Moreover, data on concrete members with sizes, cross-sectional shapes, and material grades that reflect actual design and construction practices is lacking. The transition toward AASHTO specifications for load and resistance factor rating (LRFR) and the modified compression field theory to determine shear capacity of concrete members has often led to lower bridge ratings than previous evaluation methodologies. Research is needed to help bridge owners overcome the significant lack of data on the shear capacity and behavior of concrete members that are not compliant with the current specifications and to accurately determine the load rating of older concrete bridges. The objective of this research is to develop procedures for evaluating the shear capacities of in-service prestressed and non-prestressed concrete girders that do not meet current shear design and load rating requirements of AASHTO.
- Record URL:
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Supplemental Notes:
- Contract to a Performing Organization has not yet been awarded.
Language
- English
Project
- Status: Proposed
- Funding: $950000
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Contract Numbers:
Project 12-129
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Sponsor Organizations:
National Cooperative Highway Research Program
Transportation Research Board
500 Fifth Street, NW
Washington, DC United States 20001American Association of State Highway and Transportation Officials (AASHTO)
444 North Capitol Street, NW
Washington, DC United States 20001Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Project Managers:
Abu-Hawash, Ahmad
- Start Date: 20250608
- Expected Completion Date: 0
- Actual Completion Date: 0
Subject/Index Terms
- TRT Terms: Concrete bridges; Girders; Load factor; Prestressed concrete bridges; Shear strength; Specifications
- Subject Areas: Bridges and other structures; Design; Highways; Maintenance and Preservation;
Filing Info
- Accession Number: 01919272
- Record Type: Research project
- Source Agency: Transportation Research Board
- Contract Numbers: Project 12-129
- Files: TRB, RIP
- Created Date: May 21 2024 5:25PM