This paper presents mathematical analysis methods for calculating the thickness and anchor length of geosynthetic-reinforced soil layers that are used to bridge cavities. It describes the following methods of analysing layer thickness: (1) Giroud's method; (2) the multi-layer method; (3) the ultimate strength method; and (4) the strain-dependent strength method. The third method seems to be more straightforward and easier to use, but unfortunately has a major weakness. The fourth method seems to be the most suitable. It can be applied to develop relationships between those parameters which have a dominant effect on the stability of the reinforced soil layers bridging the cavities. The effect of each factor on the reinforced soil stability is discussed, and the relationships between them are presented graphically. The graphs can be used to estimate layer thickness and anchor length for an extensive range of soil, geosynthetic and cavity conditions. They also help to assess the stability of specific soil-geosynthetic-cavity systems.

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    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
  • Authors:
    • WANG, M C
    • FENG, Y X
    • Jao, M
  • Publication Date: 1996-2


  • English

Media Info

  • Features: References;
  • Pagination: p. 95-109
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00729173
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Dec 12 1996 12:00AM