Sensitivity Evaluation of MEPDG Performance Prediction

The American Association of State Highway & Transportation Officials (AASHTO) interim edition of the Mechanistic-Empirical Pavement Design Guide Manual of Practice (MEPDG) and related software developed under NCHRP provides methodologies for the analysis and performance prediction of different types of flexible and rigid pavements. The performance predicted by these methodologies (in terms of distresses such as cracking, rutting, faulting, and smoothness) for the anticipated climatic and traffic conditions depends on the values of input parameters that characterize pavement materials, layers, design features, and condition. However, these input parameter values are expected to differ to varying degrees and, therefore, the predicted performance may also vary to some degree depending on the input parameter values. Although studies have been conducted to relate predicted performance to differences in input parameter values, these studies have not addressed this relationship in a systematic manner to identify the relative influence of input parameter values on predicted performance. Also, these studies have not considered the combined effects of variations in two or more input parameter values on predicted performance in a comprehensive manner. Research is needed to determine the degree of sensitivity of the performance predicted by the MEPDG to input parameter values. This information will help identify, for specific climatic region and traffic conditions, the input parameters that appear to substantially influence predicted performance. In this manner, users can focus efforts on those input parameters that will greatly influence the pavement design. The objective of this research is to determine the sensitivity of the performance predicted by the MEPDG to variability of input parameter values. The research will deal with all types of flexible and rigid pavements included in the MEPDG. The research shall be conducted using the MEPDG software version available as of October 1, 2008.

Language

  • English

Project

  • Status: Completed
  • Funding: $249952.00
  • Contract Numbers:

    Project 1-47

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway and Transportation Officials (AASHTO)

    444 North Capitol Street, NW
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Amir, Hanna

  • Performing Organizations:

    University of Maryland, College Park

    University College
    College Park, MD  United States  20742
  • Principal Investigators:

    Schwartz, Charles

  • Start Date: 20090902
  • Expected Completion Date: 0
  • Actual Completion Date: 20111231
  • Source Data: RiP Project 19462

Subject/Index Terms

Filing Info

  • Accession Number: 01464373
  • Record Type: Research project
  • Source Agency: National Cooperative Highway Research Program
  • Contract Numbers: Project 1-47
  • Files: TRB, RiP, USDOT
  • Created Date: Jan 3 2013 2:41PM