文档介绍：Technical Report Documentation Page
1. Report No. 2. Government Accession No. 3. Recipient’s Catalog No.
FHWA/TX-05/9-580/589-2
4. Title and Subtitle 5. Report Date
FIELD PERFORMANCE OF PRESTRESSED HIGH February 2000
PERFORMANCE CONCRETE HIGHWAY BRIDGES IN TEXAS
7. Author(s) 6. anization
Code
Shawn P. Gross and Ned H. Burns
8. anization
Report No.
9-580/589-2
9. anization Name and Address 10. Work Unit No. (TRAIS)
Center for Transportation Research
The University of Texas at Austin 11. Contract or Grant No.
3208 Red River, Suite 200 9-580; 9-589
Austin, TX 78705-2650
12. Sponsoring Agency Name and Address 13. Type of Report and Period
Covered
Texas Department of Transportation
Research and Technology Implementationn Technical Report (August
. Box 5080 1993-Dec. 1998)
Austin, TX 78763-5080
14. Sponsoring Agency Code
15. Supplementary Notes
Project conducted in cooperation with the Federal Highway Administration.
16. Abstract
Two prestressed high performance concrete (HPC) highway bridges were constructed
in Texas utilizing concrete with 56 day design strengths of up to 97 MPa (14,000
psi). The utilization of HPC allowed for longer spans and larger girder spacing
than typically used in conventional prestressed concrete bridges. An extensive
research program was conducted to monitor the short- and long-term structural
behavior of these unique highway bridge structures. The Louetta Road Overpass
near Houston, Texas, consists of two adjacent three-span simply supported HPC
highway bridges. The Louetta bridges utilize the Texas U-beam in conjunction
with high performance concrete and 15 mm ( in.) diameter prestressing
strands, resulting in an efficient structural design. The North Concho River/US
87/S. O. R. R. Overpass in San Angelo, Texas, consists of a 290 m (951 ft) long
eight-span HPC Eastbound bridge and an adjacent 292 m (958 ft) long nine-span