DEFLECTION CHARACTERISTICS OF AN ASPHALT-PAVED STEEL BRIDGE DECK UNDER VEHICULAR LOADING

The deflection characteristics of an asphalt-paved orthotropic steel bridge deck are complex and affected by many parameters. At usual traffic speeds the major parameter controlling the deflection under a given wheel load is temperature while at low speeds, speed also influences deflection. At constant temperature, deck deflection proved to be linear with wheel load up to a load of 30 kip and to be relatively unaffected by tire pressure. By comparing the deflection of the paved deck with that of the unpaved deck under the same wheel load, it proved possible to derive relationships between asphalt stiffness, temperature and loading frequency. This information was combined to produce a three dimensional stiffness-temperature-loading frequency diagram that clearly shows the interrelationship of these three major variables. The results of the study are based on direct measurements of stiffness under field conditions using vehicular loading.

• Supplemental Notes:
  • Proceedings of the Association, of Asphalt Paving Technologists' Technical Session held in New Orleans, La on Feb 16-18, 1976.
• Authors:
  • BLIGHT, G E
  • Stewart, J A
  • Papendorf, GHW
• Publication Date: 1976

Media Info

• Features: References;
• Pagination: p. 199-222
• Serial:
  • Chemical Abstracts
  • Volume: 45

Subject/Index Terms

• TRT Terms: Asphalt; Asphalt pavements; Bridge decks; Deflection; Highway bridges; Loads; Pavement performance; Steel structures; Stiffness; Temperature; Wheel loads
• Uncontrolled Terms: Loading
• Old TRIS Terms: Decks
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00158332
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: Oct 13 1977 12:00AM