Analytical Evaluation of Unbound Granular Layers in Regard to Permanent Deformation

Computations of stress-strain state in granular layers are often simplified with the assessment of vertical stress at the top of the subgrade for the purpose of Low Volume Road (LVR) pavement design. This paper discusses an analytical method for evaluating the stress-strain condition in thinly surfaced or unsurfaced pavement typically used in LVR structures, aiming at a better understanding of the effect of modern loading condition in these roads—e.g. Tire Pressure Control Systems (TCPS) and super single tires. The results of the modeled scenarios show a fairly well defined locus of maximum stress for a variety of structures, indicating greater damaging effect of super single over twin tires and, likewise, greater damage inflicted by high tire pressures. The analysis of some Heavy Vehicle Simulator (HVS) test results available from literature using this technique suggests a promising opportunity for the development of a simplified design method of LVR against rutting.

Language

  • English

Media Info

  • Media Type: Web
  • Edition: e-book ISBN 9780203865286
  • Features: Figures; References; Tables;
  • Pagination: pp 187-196
  • Monograph Title: Bearing Capacity of Roads, Railways and Airfields. Proceedings of the 8th International BCR2A'09 Conference

Subject/Index Terms

Filing Info

  • Accession Number: 01342920
  • Record Type: Publication
  • ISBN: 9780415871990
  • Files: TRIS
  • Created Date: Jun 1 2011 8:06PM