This study is a parametric evaluation of reduction in undrained shear strength of fine grained soils required to cause failure beneath embankments during earthquake loading. The evaluated parameters are: crust thickness, normalized undrained strength, maximum past pressure, and embankment height. Both finite element and limit equilibrium analyses were used to determine strength reductions that would lead to embankment failure. It was found that reductions of undrained strengths of 55% to 65% would lead to failure during earthquake loading.
The method proposed by Idriss and Boulanger was also used to predict strength reductions for each model over a range of earthquake amplitudes and magnitudes. Idriss and Boulanger predicted strength reductions around 80% which would not lead to collapse of the embankments.
| Identifer | oai:union.ndltd.org:UTAHS/oai:digitalcommons.usu.edu:etd-2353 |
| Date | 01 May 2012 |
| Creators | Reynoso, Karla I. |
| Publisher | DigitalCommons@USU |
| Source Sets | Utah State University |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | All Graduate Theses and Dissertations |
| Rights | Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact Andrew Wesolek (andrew.wesolek@usu.edu). |
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