LINEAR ELASTIC LAYER THEORY AS A MODEL OF DISPLACEMENTS MEASURED WITHIN AND BENEATH FLEXIBLE PAVEMENT STRUCTURES LOADED BY THE DYNAFLECT

Presented in this report are the results of an investigation of the capability of linear elastic theory to predict measured displacements on the surface, within, and beneath flexible pavement structures. In measuring predictive capability, the yard stick used was replication error. Sources of data were an NCHRP project, the AASHO Road Test, and the Texas Transportation Institute's Flexible Pavement Test Facility. Only the Texas source, which employed a vibrating surface load (the Dynaflect) and specially designed transducers lowered into small-diameter measurement holes, furnished both horizontal and vertical displacements. These were measured at various depths ranging from zero to 65 inches beneath the pavement surface, and at horizontal distances ranging from 10 to 216 inches. An analysis of a selected portion of the Texas data, using the theory of elastic layered systems as a model, yielded prediction errors that were reasonably commensurate with replication error.

• Supplemental Notes:
  • Research Study sponsored by Texas Highway Department, and FHWA.
• Corporate Authors:

  Texas Transportation Institute

  Texas A&M University System, 1600 E Lamar Boulevard
  Arlington, TX  United States  76011

  University of Texas, Austin

  Center for Highway Research, 200 West 21st Street
  Austin, TX  United States  78712

  Texas State Department of Highways & Public Transp

  P.O. Box 5051
  Austin, TX  United States  78763
• Authors:
  • Schrivner, F H
  • Michalak, C H
• Publication Date: 1974-8

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 140 p.

Subject/Index Terms

• TRT Terms: Dislocation (Geology); Dynaflect; Elasticity (Mechanics); Flexible pavements; Forecasting; Linear elasticity; Load tests; Transducers
• Old TRIS Terms: Elastic theory; Horizontal displacement; Replicating
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00082896
• Record Type: Publication
• Report/Paper Numbers: Res. Rept. No 123-25Intrm Rpt.
• Contract Numbers: 1-8-69-123
• Files: TRIS, ATRI, STATEDOT
• Created Date: Mar 26 1975 12:00AM