NDLI: Numerical Study of a Failure of a Reinforced Earth Retaining Wall

Content Provider	Springer Nature Link
Author	Sengupta, A.
Copyright Year	2012
Abstract	The case history of a failure of a RE wall has been presented. The wall failed immediately upon completion due to the overestimation of the strengths of the foundation clay layers and due to the underestimation of the self weight of the fill materials. A typical cross-section of the wall along with the stabilizing embankment and the foundation are modeled numerically by the limit equilibrium method and by a finite element method. The strengths of the foundation soils are determined by field tests done after the failure of the wall. Both the analyses predicted failure of the wall. The deformations predicted by the finite element method are found to be comparable to the observed field data. The numerical analyses further indicate that by consolidating a foundation clay layer to a minimum undrained strength of 45 kPa, the required factor of safety for the wall along with the road embankment can be achieved theoretically. Accordingly, prefabricated vertical drains are used to expedite the drainage and consolidation of the foundation clay layers. After the field tests confirm that the required minimum undrained strength is achieved, the RE wall and the embankment have been rebuilt successfully and now in full operation.
Starting Page	1025
Ending Page	1034
Page Count	10
File Format	PDF
ISSN	09603182
Journal	Geotechnical and Geological Engineering
Volume Number	30
Issue Number	4
e-ISSN	15731529
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-05-25
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Reinforced earth retaining wall Slope failure Limit equilibrium analysis Finite element analysis Prefabricated vertical drain Undrained strength Waste Management/Waste Technology Terrestrial Pollution Hydrogeology Civil Engineering Geotechnical Engineering & Applied Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Soil Science Geology Architecture Geotechnical Engineering and Engineering Geology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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