This paper describes a subsystem capable of predicting the lateral profile of pavements after any number of axle loadings. The method employs a sophisticated computer program, together with a high level of materials characterisation. The paper is divided into three parts. (a) A description of the research program DEFPAV is given. This program is capable of computing the load induced stresses and elastic strains beneath a moving wheel load. Furthermore it produces at the same time an estimate of the surface profile due to permanent deformation in each of the constituent layers of the pavement structure. A modification of the program which is suitable for use by road engineers is discussed. (b) A description of the methods used to obtain both the elastic and creep properties of pavement materials is given. The methods discussed are designed to be useable by the average well equipped materials laboratory rather than a research laboratory. (c) A description is given of the verification procedures undertaken by this research group to demonstrate that DEFPAV may be used with some confidence in multilayer pavement problems. Furthermore a computation is presented which demonstrates that a program such as DEFPAV may be used to estimate load equivalence factors for different environments and loading conditions. /Author/

Media Info

  • Features: Figures; References;
  • Pagination: p. 509-518

Subject/Index Terms

Filing Info

  • Accession Number: 00170234
  • Record Type: Publication
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Mar 14 1978 12:00AM