ON THE REQUIRED CONNECTION STRENGTH OF GEOSYNTHETICALLY REINFORCED WALLS

The use of geosynthetics for reinforcing retaining walls, bridge abutments, and wing walls has progressed rapidly during the last decade. Design of the reinforcement, and its necessary testing, have advanced similarly. However, there have been doubts about the connection strength of the reinforcement to the wall facing. The mathematical and numerical calculations in this paper show that the required connection force is very small, so that almost all known wall systems can mobilise such forces. There is still concern about several short-term and long-term issues during and after wall construction, which could add to the theoretically required connection strength. This paper discusses these issues individually, and classifies them into three types of stress mobilising situations: (1) uniform settlement; (2) localised asymmetric deformation; and (3) localised symmetric deformation. The paper gives a parametric evaluation of each situation, to illustrate how far the connection stresses could increase beyond their theoretical values under a hypothetical set of conditions. Although these values can become high, all harmful scenarios can and should be avoided. As long as proper design is followed by proper construction, there need thus be no urgent concern about connection strength.

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  • Corporate Authors:

    Elsevier

    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
  • Authors:
    • SOONG, T-Y
    • Koerner, R M
  • Publication Date: 1997

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 377-93
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00790270
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Apr 11 2000 12:00AM