Abstract
The strength loss of clays subjected to seismic loading is a crucial factor promoting slope instability. This paper proposes a constitutive modeling strategy to simulate accurately the development of pore pressure in cyclically loaded clays, i.e. one major factor responsible for strength deterioration during earthquakes. For this purpose, an enhanced plastic flow rule is proposed within the bounding surface framework to represent the cyclic behavior of reconstituted and/or weakly structured clays. The verification of the model against experimental evidence shows that the proposed flow rule improves the accuracy with which sign and magnitude of the pore pressure increments are computed.
Original language | English (US) |
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Pages (from-to) | 65-79 |
Number of pages | 15 |
Journal | Computers and Geotechnics |
Volume | 101 |
DOIs | |
State | Published - Sep 2018 |
Funding
The funding for the work reported herein was provided by a National Science Foundation grant CMMI-1434876 . The support of Dr. Richard Fragaszy, program director, is greatly appreciated.
Keywords
- Clay
- Constitutive model
- Cyclic loading
- Plastic flow rule
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
- Computer Science Applications