PAVEMENT ANALYSIS BASED ON MEASURED IN-DEPTH DEFLECTION DATA

In-depth deflections were measured in three typical Swedish pavements during different seasonal conditions, as a part of a joint Norwegian/Swedish project. Deflections in individual layers of the pavement were calculated with a number of computer programs, including different material models, and compared to measured deflections. During spring and autumn conditions, with no frozen zone in the pavement, the best match is achieved with non-linear models (ILLI-PAVE). In the spring thaw, when the upper part of the subgrade is still fozen, a good match is found with linear elastic models (CHEVRON). Algorithms were also developed for calculation of vertical compressive strains at the top of the unbound layers from the surface deflections measured with the Falling Weight Deflectometer.

• Corporate Authors:

  Minnesota Department of Transportation

  395 John Ireland Boulevard
  St Paul, MN  United States  55155
• Authors:
  • Jansson, H
  • WIMAN, L G
• Conference:
  • 4th International Conference, Bearing Capacity of Roads and Airfields
  • Location: Minneapolis, MN
  • Date: 1994-8-17 to 1994-8-21
• Publication Date: 1994

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 331-342
• Serial:
  • Volume: 1

Subject/Index Terms

• TRT Terms: Algorithms; Analysis; Calculation; Falling weight deflectometers; Linear elasticity; Mathematical models; Measurement; Nonlinear systems; Pavement layers; Pavement subgrade; Pavements; Seasons
• Uncontrolled Terms: Data; Models; Seasonal variations
• Geographic Terms: Sweden
• Old TRIS Terms: In-depth deflection; Subgrade surface
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00730061
• Record Type: Publication
• Files: TRIS, ATRI, STATEDOT
• Created Date: Nov 27 1997 12:00AM