GEOSYNTHETIC LOADS IN LANDFILL SLOPES: DISPLACEMENT COMPATIBILITY

Waste-containment lining and cover systems commonly contain soil and geosynthetics. The performance of this hydraulic barrier is dependent upon accurate predictions of tensile loads, which lining and cover systems are designed to resist. This article describes four methods for determining tensile loads. Two common design methods, called the limit equilibrium method (LEM) and the limit method (LM), that consider only force equilibrium to predict tensile loads are compared with two new methods that consider force equilibrium and displacement compatibility. The four methods are tested on a multiple-layered cover system example and then the predictions are compared. The authors report that displacement compatibility is an important consideration and can significantly influence predictions for tensile load. Predictions generated from state-of-the-practice methods, such as LEM and LM, may be inaccurate when compared to more rigorous displacement compatibility methods.

Language

  • English

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 2009-25
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00669270
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 14 1994 12:00AM