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Deformation behaviour of geotextile reinforced sand slopes

DSpace at IIT Bombay

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Title Deformation behaviour of geotextile reinforced sand slopes
 
Creator MAHAJAN, RR
VISWANADHAM, BVS
 
Subject geotechnical centrifuge
design
 
Description Internal mechanisms of failure of geotextile reinforced slopes are particularly due to: (i) rupture of reinforcement layers and (ii) pull-out of geotextile layers. This paper concerns about the study of deformation behaviour of geotextile reinforced slopes resting on a firm foundation layer. Centrifuge tests were performed in a 4.5 m radius large beam centrifuge facility available at Indian Institute of Technology Bombay. In order to simulate the failure to reinforcement layers, ratio of length of the reinforcement to height of the slope is maintained as 0.85 and the slope is constructed with a scaled-down geotextile material by using a wrap-around technique to represent flexible facing. Three centrifuge model tests were carried out on geotextile reinforced sand slopes by varying the type of reinforcement and vertical spacing while, slope inclination (2V:1H) and placement void ratio were maintained as constant. Reinforced slope models were subjected to varied g-level (in steps of 5 g from 10 g onwards) up to a maximum set g-level of 75 g or collapse, whichever occurs earlier. Image analysis technique was adopted to arrive at strain distribution along reinforcement layers. Results of the centrifuge tests indicate that the failure of geotextile reinforced slopes initiate approximately at its mid height. Further, this paper addresses the stability analysis and deformation behaviour and usefulness of a centrifuge modelling technique in modelling the deformation behaviour of geotextile reinforced slopes.
 
Publisher TAYLOR & FRANCIS LTD
 
Date 2011-10-26T13:07:51Z
2011-12-15T09:12:21Z
2011-10-26T13:07:51Z
2011-12-15T09:12:21Z
2006
 
Type Proceedings Paper
 
Identifier Physical Modelling in Geotechnics - 6th ICPMG '06, Vol 1,367-372
978-0-415-41586-6
http://dspace.library.iitb.ac.in/xmlui/handle/10054/16017
http://hdl.handle.net/100/2612
 
Source 6th International Conference on Physical Modelling in Geotechnics (ICPMG 2006),Hong Kong, PEOPLES R CHINA,AUG 04-06, 2006
 
Language English