Analysis Procedures for Evaluating Superheavy Load Movement on Flexible Pavements, Volume I: Final Report

The movement of superheavy loads (SHLs) has become more common over the years, since it is a vital necessity for many important industries, such as chemical, oil, electrical, and defense. SHL hauling units are much larger in size and weight compared to the standard trucks. SHL gross vehicle weights may be in excess of a few million pounds, so they often require specialized trailers and components with nonstandard spacing between tires and axles. Accommodating SHL movements requires the determination of whether the pavement is structurally adequate and involves the analysis of the likelihood of instantaneous or rapid load-induced shear failure. In this study, a comprehensive mechanistic-based methodology consisting of the following procedures was developed: segmentation of an SHL vehicle for analysis, subgrade bearing failure analysis, sloped-shoulder failure analysis, buried utility risk analysis, localized shear failure analysis, deflection-based service limit analysis, and cost allocation analysis. In addition, a comprehensive experimental program that included five fullscale pavement/soil testing experiments performed at a large-scale box facility was designed and carried out for the verification and calibration of a number of theoretically based procedures incorporated in the analysis approach. Supplementary numerical modeling as well as measured data from Accelerated Pavement Testing facilities provided additional verification of the procedures adopted in this study. The analysis procedures developed were then implemented into a user-friendly software package, SuperPACK (Superheavy Load Pavement Analysis PACKage), to evaluate SHL movements on flexible pavements. This report presents a summary of the analysis procedures developed for evaluating SHL movement on flexible pavements. Further details of these procedures are presented in a series of stand-alone appendices (volumes Ⅱ through Ⅹ).


  • English

Media Info

  • Media Type: Web
  • Edition: Final Report
  • Features: Figures; References; Tables;
  • Pagination: 122p

Subject/Index Terms

Filing Info

  • Accession Number: 01685804
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-HRT-18-049, WRSC-UNR-201710-01
  • Contract Numbers: DTFH61-13-C-00014
  • Files: TRIS, ATRI, USDOT
  • Created Date: Nov 20 2018 10:17AM