Soft computing methodology to determine pavement thickness from falling weight deflectometer testing

O. Pekcan, Erol Tutumluer, J. Ghaboussi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper describes an advanced pavement analysis application based on a soft computing methodology, SOFTSYS, recently developed at the University of Illinois for identifying pavement geometry and layer properties through various nondestructive testing methods. Specifically, it is capable of backcalculating pavement layer properties as well as determining thickness of full depth asphalt pavements using results of the Falling Weight Deflectometer (FWD) test. SOFTSYS uses a combination of Genetic Algorithms and Artificial Neural Networks together with a structural pavement analysis model based on the Finite Element Method to obtain accurate and reliable backcalculation solutions. In this paper, basics of SOFTSYS, its numerical schemes and computer code implementation are described first within the scope of soft computing methods. An illustrative example of pavement backcalculation is then presented using the synthetic FWD field data obtained from nonlinear ILLI-PAVE finite element program representing typical full-depth asphalt pavements.

Original languageEnglish (US)
Title of host publicationGeoFlorida 2010
Subtitle of host publicationAdvances in Analysis, Modeling and Design - Proceedings of the GeoFlorida 2010 Conference
Pages2621-2630
Number of pages10
Edition199
DOIs
StatePublished - Dec 1 2010
EventGeoFlorida 2010: Advances in Analysis, Modeling and Design Conference - West Palm Beach, FL, United States
Duration: Feb 20 2010Feb 24 2010

Publication series

NameGeotechnical Special Publication
Number199
ISSN (Print)0895-0563

Other

OtherGeoFlorida 2010: Advances in Analysis, Modeling and Design Conference
CountryUnited States
CityWest Palm Beach, FL
Period2/20/102/24/10

Keywords

  • Computation
  • Deflection
  • Geometry
  • Pavements
  • Tests

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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