A NUMERICAL MODEL FOR PORE PRESSURE BUILDUP IN AIRPORT PAVEMENT SUBGRADES

The deterioration of airfield pavement systems is a complex process which involves the effects of dynamic loading from aircraft ground operations as well as the effects of seasonal weather changes and other environmental factors. A numerical model of an airfield pavement is presented which uses a finite element approach to predict the buildup of excess pore pressures in the saturated subgrade under repeated surface loading. Factors such as slab thickness, subsoil permeability, and load interval are considered in a pseudo-static analysis. A fully dynamic version of this model is also proposed which directly relates the aircraft loading fuction to pore pressure changes and to variations in material properties within the pavement subgrade.

• Corporate Authors:

  Minnesota Department of Transportation

  395 John Ireland Boulevard
  St Paul, MN  United States  55155
• Authors:
  • Gucunski, N
  • Brill, D R
• Conference:
  • 4th International Conference, Bearing Capacity of Roads and Airfields
  • Location: Minneapolis, MN
  • Date: 1994-8-17 to 1994-8-21
• Publication Date: 1994

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 1429-1442
• Serial:
  • Volume: 2

Subject/Index Terms

• TRT Terms: Airport runways; Deterioration; Dynamic loads; Environmental impacts; Environmental quality; Finite element method; Mathematical models; Permeability; Pore pressure; Properties of materials; Subgrade (Pavements); Subsoil; Thickness; Weather
• Old TRIS Terms: Numerical model
• Subject Areas: Aviation; Environment; Materials; Pavements; Terminals and Facilities;

Filing Info

• Accession Number: 00730576
• Record Type: Publication
• Files: TRIS, STATEDOT
• Created Date: Feb 3 1997 12:00AM