Technical Reports, Biomedical Engineering and Mechanics
Permanent URI for this collection
Browse
Browsing Technical Reports, Biomedical Engineering and Mechanics by Author "Hayes, Michael David"
Now showing 1 - 1 of 1
Results Per Page
Sort Options
- Implementation and Non-Destructive Evaluation of Composite Structural Shapes in the Tom's Creek BridgeHayes, Michael David; Haramis, John Emmanuel II; Lesko, John J.; Cousins, Thomas E.; Duke, John C. Jr.; Weyers, Richard E. (Virginia Center for Transportation Innovation and Research, 2000-05-01)A bridge rehabilitation utilizing a hybrid fiber reinforced polymeric composite has been completed in Blacksburg, Virginia. This project involved replacing the superstructure in the Tom's Creek Bridge, a rural short-span traffic bridge with a timber deck and corroded steel girders, with a glue-laminated timber deck on composite girders. In order to verify the bridge design and to address construction issues prior to the rehabilitation, a full-scale mock-up of the bridge was built and tested in the laboratory. This set-up utilized the actual composite beams, glue-laminated timber deck panels, and geometry to be implemented in the rehabilitation. After the rehabilitation was completed, the bridge was field tested under a known truckload. Both tests examined service load deflections, girder strains, load distribution, the degree of composite action, inter-panel deck deflections, and impact factor. The field test results indicate a service load deflection of L/400 under moving loads and a factor of safety of over 7 using the projected A-allowable for beam flexural strength. The data from the field test serves as a baseline reference for future field durability assessments as part of a long-term performance and durability study.