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.

• Record URL:
  https://doi.org/10.1061/41039(345)144
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784410394
• Supplemental Notes:
  • © 2009 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Feng, Lin
  • Liu, Jiangbo
  • Wang, Haifeng
  • Wang, Chengbin
• Conference:
  • Second International Conference on Transportation Engineering
  • Location: Chengdu , China
  • Date: 2009-7-25 to 2009-7-27
• Publication Date: 2009-7

Language

• English

Media Info

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

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Asphalt pavements; Braking; Loads; Mix design; Modulus of resilience; Pavement distress; Shear strength; Shear stress; Slopes; Temperature
• Identifier Terms: ANSYS (Computer program)
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

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