Shear Stress of Asphalt Pavement in Steep Slope Sections

Asphalt pavement on steep slope sections is easily subject to early distress, such as slippages, folding and rutting, because its shear strength is insufficient. There are vertical load and horizontal load resulting from the braking process on asphalt pavement. The paper uses ANSYS finite element system to analyze shear stress distribution law under different vertical and horizontal load at 20°C and 60°C respectively, which can provide a theoretical basis for checking shear strength. Analysis shows that shear stress increases with resilient modulus decreasing, for resilient modulus of asphalt mixture at 60°C is less than 20°C. Without considering horizontal load, the maximum shear stress appears at about 3 cm below surface; considering horizontal load, shear stress appears in surface. Influence depth range increases with the load increasing. Shear stress at 10 cm in depth decreases more than 50% of that in surface, so when designing asphalt mixture, it is necessary to check the shear strength of upper and mid layers.


  • English

Media Info

  • Media Type: Web
  • Pagination: pp 869-874
  • Monograph Title: International Conference on Transportation Engineering 2009

Subject/Index Terms

Filing Info

  • Accession Number: 01525267
  • Record Type: Publication
  • ISBN: 9780784410394
  • Files: TRIS, ASCE
  • Created Date: May 24 2014 12:46PM