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http://dx.doi.org/10.7843/kgs.2012.28.5.95

Development of Stress Based on Pore Pressure Model  

Park, Du-Hee (Dept. of Civil and Environmental Engineering., Hanyang Univ.)
Ahn, Jae-Kwang (Dept. of Civil and Environmental Engineering., Hanyang Univ.)
Kim, Jin-Man (Dept. of Civil Engineering., Pusan National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.28, no.5, 2012 , pp. 95-107 More about this Journal
Abstract
Even though the importance of predicting build-up of pore pressure under cyclic loading is recognized, effective stress analysis is rarely performed due to difficulties in selecting the parameters for the pore pressure model. In this paper, a new stress based numerical model for predicting pore pressure under cyclic loading is developed. The main strength of the model is that it is easy-to-use, requiring only the CSR-N curve in selecting the parameters. Another advantage of the model is that it can be used for any loading pattern and therefore can be implemented in an effective stress time-domain dynamic analysis code. The accuracy of the model is validated through its comparisons with measurements in literature and laboratory test data collected in Korea. Further comparisons with another stress based pore pressure model highlighted the superiority of the proposed model.
Keywords
Accumulated shear stress; Cyclic stress ratio; Damage parameter; Pore water pressure; Time-domain analysis;
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