PULLOUT FORCE/DISPLACEMENT RELATIONSHIP OF EXTENSIBLE GRID REINFORCEMENTS

A model for predicting the pullout resistance of polymer-grid soil reinforcement has been proposed. The influence of bearing member rigidity and spacing ratio (S/D) are explicitly expressed in the hyperbolic model. A new bearing capacity equation is incorporated for calculating the maximum pullout force. The displacement along the reinforcement is calculated by using the proposed pullout bearing resistance model together with the elongation of the grid longitudinal member. The validity of the method is confirmed by good agreement between calculated values and actual test data. The analytically determined effective reinforcement embedment lengths (i.e. the length of the reinforcement in tension) and pullout displacement to mobilize the desired pullout resistance of polymeric grids under different backfill conditions and under different applied normal pressures provide useful information for the design of reinforced earth structures against pullout failure. (A)

  • Availability:
  • Corporate Authors:

    Elsevier Science Publishers

    Crown House, Linton Road
    Barking, Essex IG11 8JU,   England 
  • Authors:
    • BERGADO, D T
    • Chai, J-C
  • Publication Date: 1994

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00668319
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Nov 2 1994 12:00AM