Field Behavior of a Geogrid Reinforced Soil Retaining Wall with a Wrap-Around Facing

The earth pressure and deformation characteristics of a geogrid reinforced soil retaining wall were monitored during and for a period of 1.5 years after construction. Both vertical and lateral soil stresses were recorded with vibrating-wire earth pressure cells, and the reinforcement deformations we...

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Bibliographic Details
Published in:Geotechnical testing journal 2010-01, Vol.33 (1), p.1-6
Main Authors: Yang, Guangqing, Ding, Junxia, Zhou, Qiaoyong, Zhang, Baojian
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Earthwork. Foundations. Retaining walls
Exact sciences and technology
Geotechnics
Soil investigations. Testing
Stabilization. Consolidation
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Summary:The earth pressure and deformation characteristics of a geogrid reinforced soil retaining wall were monitored during and for a period of 1.5 years after construction. Both vertical and lateral soil stresses were recorded with vibrating-wire earth pressure cells, and the reinforcement deformations were measured using flexible displacement sensors. The maximum vertical foundation pressure along the wall's reinforcements occurred at the center of the reinforcement, gradually decreasing towards the front and back ends. The measured lateral earth pressure within the reinforced soil wall is non-linear along the wall height, and the value is less than the theoretical active lateral earth pressure. The distribution of tensile strain along the reinforcements within the lower portion of the wall has two peak values. The potential failure surface of the wall closely follows the theoretical Coulomb failure surface of an unreinforced backfill.
ISSN:0149-6115
1945-7545
DOI:10.1520/GTJ102410