A LARGE SCALE EXPERIMENTAL STUDY OF SOIL-REINFORCEMENT INTERACTION - PART I

The practical merit of using soil reinforcement which works predominantly in bending instead of mobilising axial force has recently been discussed in relation to soil nailing. Jewell and Pedley have shown that the improvement in soil strength stemming from the reinforcement bending stiffness is always small in relation to the improvement which can be obtained from the reinforcement axial capacity. This paper presents data obtained from large scale direct shear tests conducted at Oxford University to show the measured effect of reinforcement bending stiffness with further data obtained from the literature appearing in Part II. The laboratory data come from tests in the direct shear apparatus in which the reinforcement is placed across the potential rupture surface in the soil. The direct shear apparatus consists of a rigid steel cube of internal side 1000mm, split at mid-height and instrumentation includes load cells, LVDTs (linear variable differential transformers), post yield resistance strain gauges and a 32 channel data logger and computer. The data obtained support the theoretical conclusions of Jewell and Pedley. An additional simplified explanation as to why bending stiffness is relatively ineffective for soil nailing is also given. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00174653
• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • Pedley, M J
  • JEWELL, R A
  • MILLIGAN, GWE
• Publication Date: 1990-7-8

Language

• English

Media Info

• Pagination: v.p.
• Serial:
  • GROUND ENGINEERING
  • Volume: 23
  • Issue Number: 6
  • Publisher: EMAP CONSTRUCT LIMITED
  • ISSN: 0017-4653

Subject/Index Terms

• TRT Terms: Bending; Direct shear tests; Material reinforcement; Measuring instruments; Mechanically stabilized earth; Soil nailing; Soil structure interaction; Soils; Stiffness
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00617401
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Nov 30 1991 12:00AM