PORTLAND CEMENT CONCRETE - PRESTRESSED CONCRETE BRIDGES (LIGHTWEIGHT AGGREGATE)

RESULTS ARE PRESENTED OF A FIELD TEST ON A LIGHTWEIGHT AGGREGATE PRESTRESSED CONCRETE I-BEAM BRIDGE. LONG-TERM LENGTH CHANGES DUE TO CREEP AND SHRINKAGE ARE BRIEFLY REPORTED, ALONG WITH THE BEHAVIOR OF THE BRIDGE DURING MOVING LOAD TESTS WITH THE BPR HS20 TEST VEHICLE. FIELD TEST RESULTS ARE COMPARED WITH VALUES OBTAINED BY THE ORTHOTROPIC PLATE THEORY AND THE AASHO BRIDGE SPECIFICATIONS. CONCLUSIONS STATED ARE AS FOLLOWS: (1) THE CREEP, SHRINKAGE, AND ELASTIC PROPERTIES OF THE LIGHTWEIGHT CONCRETE PRESENTED NO PROBLEMS IN THE DESIGN, CONSTRUCTION, AND PERFORMANCE OF THE BRIDGE, (2) THE AASHO SPECIFICATIONS PERTAINING TO LATERAL LOAD DISTRIBUTION OF WHEEL LOADS APPEAR TO BE UNDULY CONSERVATIVE FOR THE DESIGN OF INTERIOR GIRDERS, AND (3) THE GUYON AND MASSONET ORTHOTROPIC PLATE THEORY GAVE AN ACCURATE PREDICTION OF THE BEHAVIOR OF THE BRIDGE. /BPR/

• Corporate Authors:

  University of Florida, Gainesville

  Gainesville, FL  United States  32611

  Bureau of Public Roads /US

  400 7th Street, SW
  Washington, DC  United States  20590

  Florida State Road Department

  ,    
• Authors:
  • Self, M W
• Publication Date: 1969-7

Subject/Index Terms

• TRT Terms: Beams; Bridge design; Bridges; Concrete; Concrete bridges; Creep; Elasticity (Mechanics); Field tests; I beams; Lightweight aggregates; Motion; Motor vehicles; Orthotropic; Prestressed concrete; Prestressing; Shrinkage; Structural design; Structural plates; Theory; Wheel loads
• Uncontrolled Terms: Lateral loads; Moving vehicles; Plates; Wheel load distribution
• Old TRIS Terms: Concrete creep
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 00207924
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Report/Paper Numbers: Hpr- C-1-63
• Files: TRIS, STATEDOT
• Created Date: Dec 29 1994 12:00AM