Prediction of the behaviour of a geogrid reinforced sloped fill under footing load

This paper summarizes the results of a numerical study on the performance of a model footing located near the crest of a sloped fill reinforced with a layer of geogrid reinforcement. Predicting the load-settlement behaviour of the footing and the stabilising force contributed by the reinforcement proved difficult due to the effects of compaction during construction. The potential of modelling the compaction effects by varying the stiffness parameter K of the fill using both Janbu's and Duncan and Chang's models as well as using higher K0 value for setting the initial horizontal stresses are examined. The predicted behaviour of the reinforced sloped fill for these different scenarios are discussed in comparison to the measured responses. This study indicates that the load-settlement behaviour of the footing could be predicted well by adopting Janbu's equation for the stress dependent stiffness with high K values in the order of 4000 and K0= 1.0 for setting the initial horizontal stresses. However, the tensile force in the reinforcement could not be predicted satisfactorily. For the covering abstract see ITRD E125786.

• Availability:
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• Authors:
  • OCHIAI, H (
  • OTANI, J (
  • YASUFUKU, N (
  • OMINE, K (
  • GNANENDRAN, C T
• Publication Date: 2001

Language

• English

Media Info

• Pagination: 559-64
• Serial:
  • LANDMARKS IN EARTH REINFORCEMENT. PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM ON EARTH REINFORCEMENT HELD JAPAN, NOVEMBER 2001
  • Volume: 1
  • Publisher: SWETS & ZEITLINGER B.V.

Subject/Index Terms

• TRT Terms: Conferences; Embankments; Forecasting; Foundations; Geotextiles; Lattices; Mathematical models; Reinforcing materials; Slopes; Stiffness
• ITRD Terms: 8525: Conference; 2801: Embankment; 132: Forecast; 3377: Foundation; 4568: Geotextile; 3463: Lattice; 6473: Mathematical model; 3471: Reinforcement (in mater); 2831: Slope (terrain); 5931: Stiffness
• Subject Areas: Geotechnology; I51: Earthworks and Soil Drainage;

Filing Info

• Accession Number: 01012291
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 90-265-1864-1
• Files: ITRD
• Created Date: Dec 20 2005 3:21PM