Application of Dynamic Analysis and a Combination of Testing Methods in Modeling Soils Affected by a Strong Earthquake

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Title Application of Dynamic Analysis and a Combination of Testing Methods in Modeling Soils Affected by a Strong Earthquake
Author Ogbonnaya, Igwe; Gratchev, Ivan
Journal Name Electronic Journal of Geotechnical Engineering
Year Published 2010
Place of publication United States
Publisher Electronic Journal of Geotechnical Engineering
Abstract A procedure is presented for modeling and investigating the pre and post-failure geotechnical characteristics of soils affected by strong earthquakes. Using a new method of dynamic numerical analysis and an experimental program aimed at understanding the post-failure behavior of such soils, it is shown that the resultant 0.74 factor of safety, 30 – 40 m failure elevation, critical failure plane and zero effective stress values are consistent with field work findings and observations. Compared to another method of stability analysis used in this research only the dynamic analysis provided the exact location of the most critical sliding surface. Laboratory undrained shear results on strongly weathered soils from the affected slopes show that after failure, generated excess pore water pressure was equal to the applied normal stress on the soils indicating that the soils liquefied and that they must have traveled down slope at considerable speed which correspond to the destruction and disruptions witnessed.
Peer Reviewed Yes
Published Yes
Publisher URI http://www.ejge.com/2010/Ppr10.011/Abs10.011.htm
Copyright Statement Copyright 2010 Mete Oner. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Volume 15
Page from 1
Page to 11
ISSN 1089-3032
Date Accessioned 2012-02-27
Date Available 2014-03-06T02:30:26Z
Language en_US
Research Centre Centre for Infrastructure Engineering and Management
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Civil Geotechnical Engineering
URI http://hdl.handle.net/10072/44610
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1x

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