CENTRIFUGE MODELING OF GEOTEXTILE-REINFORCED COHESIVE SOIL RETAINING WALLS
Reduced scale models of 24 vertical and steeply sloping reinforced soil walls were constructed using kaolin as backfill, reinforced with a nonwoven geotextile simulant, and loaded to failure under increasing self-weight in the geotechnical centrifuge. The models stood on firm or rigid foundations, and different lengths of reinforcement were tested. No pullout failures were observed in any models. For vertical walls, failure developed entirely within the reinforced zone when L/H was greater than or equal to 0.75; for steeply sloped walls, this value was 0.67. Models constructed on firm foundations performed better than identical ones constructed on rigid foundations. A stability analysis using the simplified, two-dimensional limit-equilibrium simplified Bishop method incorporating reinforcement was a good predictor of the behavior of the models based on computed factors of safety at failure. The development of tension cracks in the backfill as walls underwent prefailure deformations led to stress concentrations in the geosynthetics and should be avoided in practice.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/07339410
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Corporate Authors:
American Society of Civil Engineers
345 East 47th Street
New York, NY United States 10017-2398 -
Authors:
- Porbaha, A
- Goodings, D J
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Discussers:
- Lopes, F R
- Publication Date: 1996-10
Language
- English
Media Info
- Features: Appendices; Figures; References; Tables;
- Pagination: p. 840-848
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Serial:
- Journal of Geotechnical Engineering
- Volume: 122
- Issue Number: 10
- Publisher: American Society of Civil Engineers
- ISSN: 0733-9410
Subject/Index Terms
- TRT Terms: Centrifuges; Deformation; Failure; Foundations; Geotextiles; Material reinforcement; Mathematical models; Retaining walls; Soil stabilization
- Uncontrolled Terms: Models
- Old TRIS Terms: Foundation conditions
- Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;
Filing Info
- Accession Number: 00730005
- Record Type: Publication
- Files: TRIS, ATRI
- Created Date: Dec 29 1997 12:00AM