APPARATUS AND INSTRUMENTS FOR THE LABORATORY STUDY OF MULTI-ANCHORED FLEXIBLE RETAINING WALLS

A laboratory setup is developed to study the earth pressure distribution on a multi-anchored flexible retaining wall, the bending moments in the wall, the forces in the anchoring wires, and the movements of the wall and retained soil during excavation of the front side of the wall. The wall was constructed from narrow aluminum panels, five such panels being clamped together at the top and bottom to form the central test area. Three such sections were used to make up a total width of 1,008 m. Electrical resistance strain gages were fixed to the wall (a) to record the bending stress and (b) to determine earth pressures, using small cantilevers cut in a panel. Other transducers were made and inserted to measure the normal and shear reactions at the base. Lateral displacements of the wall were transferred by 1-mm-dia rods through the soil to dial gages outside the test flume. During excavation, counterbalanced horizontal wale beams were used on the front side of the wall to distribute the forces of the anchor wires over the width of the wall. These beams were used at three levels corresponding to the locations of the anchor wires. The wires, which provide support to the wall, passed through the retained soil to a fixture on the frame where the loading was measured by miniature proving rings instrumented with small strain gages. The paper is deficient in that no mention is made of the order of the forces or stresses to be measured or of the sensitivity of the various transducers constructed. Further, although the paper shows the use of electrical resistance strain gages in various novel situations, it is restricted to readers who are involved in laboratory modeling of this and similar problems. We must wait for promised later papers to discuss the results and a design procedure for flexible tied walls.

  • Availability:
  • Corporate Authors:

    British Society for Strain Measurements

    281 Heaton Road
    Newcastle-Upon-Tyne, NE6 5QB,   England 
  • Authors:
    • Kurdi II
    • HANNA, T H
  • Publication Date: 1974-4

Media Info

  • Pagination: p. 65-71
  • Serial:
    • Strain
    • Volume: 10
    • Issue Number: 2
    • Publisher: British Society for Strain Measurements
    • ISSN: 0039-2103

Subject/Index Terms

Filing Info

  • Accession Number: 00082859
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 26 1975 12:00AM