GEOGRID REINFORCED WALLS FOR GRADE SEPARATION, TANQUE VERDE ROAD, TUCSON, USA

This case history describes the Tanque Verde Road retaining wall project, Tucson, AZ, USA, the first major reinforced soil retaining wall project in North America that used planar sheets of polymer geogrids as the soil reinforcing elements. 46 individual walls, of total length about 1600m, were constructed between December 1984 and September 1985, as part of an intersection grade separation. The Tensar SR2 geogrid reinforcing panels were connected mechanically to 3m wide 150mm thick full-height precast concrete facing panels. Two 4.7m high 3m wide panel sections were instrumented to monitor performance in the following ways: (1) surveying wall face movements; (2) measuring reinforcement strains with resistance strain gauges and inductance coils; (3) measuring strain in the connection with resistance strain gauges attached to the geogrid cast into the concrete facing panel; (4) measuring horizontal and vertical displacements in the wall fill with inductance coils; (5) measuring pressure on the wall face and vertical stresses in the soil fill with pressure cells; and (6) monitoring effects of seasonal temperature variations with resistance thermometers. The performance of the walls was found to be satisfactory. For the covering abstract see IRRD 865821.

  • Availability:
  • Corporate Authors:

    BiTech Publishers, Limited

    173-11860 Hammersmith Way
    Richmond, British Columbia V7A 5G1,   Canada 
  • Authors:
    • Berg, R R
    • CHOUERY-CURTIS, V E
  • Publication Date: 1993

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00668234
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-9696924-0-4
  • Files: ITRD
  • Created Date: Nov 2 1994 12:00AM