Advertisement

The Determination of Optimal Properties of A Layered Pavement Structure

  • D. F. E. Stolle
  • A. N. El-Bahrawy
Conference paper

Abstract

A two-dimensional axisymmetric model formulated within the weighted residual finite element framework and combined with least squares optimization method for finding optimal model parameters, is presented The model incorporates analytical solution in terms of Bessel functions in radial direction, thereby reducing the boundary-valued discretization from two- to one-dimension Advantages of using this procedure over the conventional finite element method, rests in its ability to model thin layers of different material types, as in a pavement structure, without having to resort to fine discretization and the resulting large system of equations which must be inverted. An example is presented to illustrate the use of this model in conjunction with nondestructive field test data provided by a falling weight deflectometer (FWD), for establishing in situ properties of a layered pavement structure.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Hoffman, M.S. and Thompson, M.R., “Comparative Study of Selected Nondestructive Testing Devices”, Transportation Research Record 852, TRB, National Research Board, Washington, D.C. (1982), 32–41.Google Scholar
  2. 2.
    Sebaaly, B.E., Mamlouk, M.S., and Davies, T.G., “Dynamic Analysis of Falling Weight Deflectometer Data”, Transportation Research Board 1070, TRB, National Research Board, Washington, D.C. (1986), 63–68.Google Scholar
  3. 3.
    Burmister, D.M., “The General Theory of Stresses and Displacements in Layered Soil Systems”, J. Applied Physics 16 (1945) 89–94, 126–127, 296–302.CrossRefGoogle Scholar
  4. 4.
    Zienkiewicz, O.C. - The Finite Element Method, McGraw-Hill, New York, 1977.zbMATHGoogle Scholar
  5. 5.
    Rosenbrock, H. H., “An Automatic Method for Finding the Greatest or Least Value of a Function”, Comp. J., 3 (1960), 174–184.MathSciNetCrossRefGoogle Scholar
  6. 6.
    Stolle, D.F.E., “Axisymmetric Analysis of Multilayered Media”, submitted to Engineering Analysis (1986).Google Scholar

Copyright information

© Martinus Nijhoff Publishers, Dordrecht 1987

Authors and Affiliations

  • D. F. E. Stolle
    • 1
  • A. N. El-Bahrawy
    • 1
  1. 1.Department of Civil Engineering and Engineering MechanicsHamilton, OntarioCanada

Personalised recommendations