MODEL TESTS FOR MOVING-LOAD EFFECTS ON PAVEMENTS

Three-layer foam rubber models were subjected to moving loads at different speeds. The response is reported in terms of displacements in three pavement sections, representing both thin and thick surface layers and bottom layers. The model tests provided high-quality data against which the validity of different numerical codes that can model moving-load effects on pavement can be verified. The recorded response reveals that the shape of the vertical displacement pulse is substantially affected by the speed of the moving load. Among the three models tested, the most inflexible model indicated that the amplitude of the response is unaffected by the speed of the moving load. With more flexible models, a substantial reduction in displacement amplitude occurs for points located deeper below the surface. A close examination of the vertical displacement pulse shape suggests that the pulse is much narrower than that given by a Haversine function.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 20-28
  • Monograph Title: Pavement analysis, design, rehabilitation, and environmental factors, 1991
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00621578
  • Record Type: Publication
  • ISBN: 0309051177
  • Files: TRIS, TRB, ATRI
  • Created Date: Apr 30 1992 12:00AM