STRENGTH OF REINFORCED SOIL
Two theoretical models for the behaviour of reinforced soil at failure are proposed. Both refer to a horizontally reinforced soil mass which fails by expanding in the direction of the reinforcement. In the first model reinforcement is seen as producing an intrinsic prestress, or lateral restraint, when failure conditions are approached. Second model reinforcement is assumed to induce horizontal and vertical shear stresses into the originally geostatic conditions. If the lateral prestress or induced shear stress has a constant value related to the strength of the reinforcement, a cohesion intercept results. If they are proportional to the initial vertical stress, an increase in the angle of friction results. These conditions correspond to failure by rupture of the reinforcement and failure by slippage between the reinforcement and the soil. Triaxial test results presented support the concept of friction angle increase while the cohesion-effect has been recognised for some time. The concept of reinforcing efficiency is introduced for interpreting the test results. Reference is made to the Reinforced Earth Technique which takes advantage of the reinforcing effect although standard design procedures usually assume anchored wall elements subjected to active earth pressure.
- Record URL:
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Corporate Authors:
ARRB
Melbourne, Victoria Australia -
Authors:
- HAUSMANN, M R
- Conference:
- Publication Date: 1976-8
Media Info
- Features: Appendices; Figures; References;
- Pagination: p. 1-8
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Serial:
- Volume: 8
- Issue Number: 8
Subject/Index Terms
- TRT Terms: Cohesion; Failure; Friction; Mathematical models; Mechanically stabilized earth; Prestressing; Shear stress; Strength of materials; Triaxial shear tests
- Uncontrolled Terms: Friction angle
- Subject Areas: Geotechnology; Highways;
Filing Info
- Accession Number: 00149489
- Record Type: Publication
- Files: TRIS
- Created Date: Apr 13 1977 12:00AM