Seismic testing of model-scale geosynthetic-reinforced soil walls
Item
Title (Dublin Core)
en-US
Seismic testing of model-scale geosynthetic-reinforced soil walls
Description (Dublin Core)
en-US
This paper presents an experimental study on a series of reduced-scale model GRS walls with Full-Height-Rigid facings conducted on a shake-table at the University of Canterbury. Each model was 900 mm high, reinforced by five layers of stiff Microgrid reinforcement and constructed of dry dense Albany sand. The ratio of geogrid length L to wall height H, L/H, was varied from 0.6 to 0.9, while the wall inclination was generally vertical (90° to horizontal) with 70° for one test. During sinusoidal shaking, facing displacements and accelerations within the backfill were recorded. Failure for all models was predominantly by overturning, with some small sliding component generated in the final shaking step. An increase in L/H resulted in a decrease in wall displacement, while a decrease in wall inclination from the vertical resulted in similar benefits. Detailed analysis of the deformation of one of the tests is presented. During testing, global and local deformations within the backfill were investigated using two methods: the first utilised coloured horizontal and vertical sand markers placed within the backfill; the second utilised high-speed camera imaging for subsequent analysis using Geotechnical Particle Image Velocimetry (GeoPIV) software. GeoPIV enabled strains to be identified within the soil at far smaller strain levels than that rendered visible using the coloured sand markers. These complementary methods allowed the spatial and temporal progressive development of deformation within the reinforced and retained backfill to be examined.
Creator (Dublin Core)
Jackson, Perry
Bowman, Elisabeth T.
Cubrinovski, Misko
Publisher (Dublin Core)
en-US
New Zealand Society for Earthquake Engineering
Date (Dublin Core)
2012-12-31
Type (Dublin Core)
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
en-US
Article
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
https://bulletin.nzsee.org.nz/index.php/bnzsee/article/view/197
10.5459/bnzsee.45.4.171-183
Source (Dublin Core)
en-US
Bulletin of the New Zealand Society for Earthquake Engineering; Vol 45 No 4 (2012); 171-183
2324-1543
1174-9857
Language (Dublin Core)
eng
Relation (Dublin Core)
https://bulletin.nzsee.org.nz/index.php/bnzsee/article/view/197/184
Rights (Dublin Core)
en-US
Copyright (c) 2012 Perry Jackson, Elisabeth T. Bowman, Misko Cubrinovski
en-US
https://creativecommons.org/licenses/by/4.0
