A new method for the structural design of flexible pavements for highways and urban roads is presented in this article. The pavement structure is regarded as a linear elastic three-layered system composed of surface, base and subgrade. The loads acting vertically and/or horizontally on the surface are assumed to be uniformly distributed over two circular areas. The contact conditions at the interfaces between adjacent layers are assumed to be completely continuous or completely smooth. The materials used are characterized by a resilient modulus and a Poisson's ratio. The design parameters for various materials are determined by experience and extensive tests. The design criteria adopted are: (1) allowable resilient deflection on the road surface; and (2) allowable horizontal tensile stresses on the bottom of asphalt surface and semi-rigid base. For urban roads, allowable shearing stresses at the top of the asphalt surface are used as well as the two criteria listed above. The permissible values for the above criteria are determined by field investigations and laboratory tests. (a) for the covering abstract of the conference see IRRD abstract no 823365.

Media Info

  • Pagination: p. 67-74
  • Monograph Title: Academic conference proceedings, Transpo '89

Subject/Index Terms

Filing Info

  • Accession Number: 00499320
  • Record Type: Publication
  • Source Agency: Transport Research Centre (CDV)
  • Files: ITRD, TRIS
  • Created Date: Sep 30 1990 12:00AM