Effects of Heavier Truck Loadings and Super-Single Tires on Subgrades [Technical Summary]

Details

• Creators:
  Salgado, Rodrigo
• Corporate Creators:
  Purdue University. Joint Transportation Research Program
• Corporate Contributors:
  Indiana Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Tires
  • Pavement subgrade
  • Flexible pavements
  • Finite element method
  • Analysis
  • Plasticity
  • Soils by properties
  • Pore water pressures
  • Concrete overlays
  • Heavy duty trucks
  More +
• Publication/ Report Number:
  FHWA/IN/JTRP-2002/20
• Resource Type:
  Brief
• Geographical Coverage:
  United States ; Indiana
• Edition:
  Technical Summary
• Corporate Publisher:
  Indiana Department of Transportation
• Description:
  In the last two decades, use of super-single tires has slightly increased, with the aim of improving efficiency and economy. Since the contact stresses generated by super-single tires are higher than those of conventional dual tires, this change has caused concern about possible damage to pavements designed based on the current design methods. The higher the contact stresses on the pavement surface, the larger the subgrade deformation, and the more severe the damage to the subgrade In order to investigate the effects of super-single tire loadings on subgrades for typical Indiana road cross-sections, static and dynamic finite element analyses were performed taking into account the realistic shape of the contact area and the increased vertical contact stress. Subgrade soils were modeled as saturated to consider the most severe conditions possibly occurring during the pavement design life.
• Format:
  PDF
• Funding:
  SPR-2402
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/91148/dot_91148_DS1.pdf
• File Type:
  [PDF - 159.98 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:c87e0a0f4f8460f519f629f9519c8c28e674d4723849054fd1785640dbdddfdf0d860aef0a982fac1c06b9c1e726eda80ff43ea373cda63e65cd4852f0f45e6d