Integration of creep into a modified hardening soil model for time-dependent analysis of a high rockfill dam
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Author list: Pramthawee P., Jongpradist P., Sukkarak R.
Publisher: Elsevier
Publication year: 2017
Journal: Computers and Geotechnics (0266-352X)
Volume number: 91
Start page: 104
End page: 116
Number of pages: 13
ISSN: 0266-352X
eISSN: 1873-7633
Languages: English-Great Britain (EN-GB)
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Abstract
This paper proposes an approach to extend a modified hardening soil model into the time-dependent analysis of high rockfill dams. The key feature of the extended model is the integration of a creep model and the double yield surface elasto-plastic model, via modifying the hardening functions. The integrated model is validated by a laboratory multistage creep test. Results from three-dimensional analyses including the without creep and with creep considerations of the Nam Ngum 2 dam have been compared with the in-situ measurements. The prediction of dam deformation can be significantly enhanced by the proposed model. ฉ 2017 Elsevier Ltd
Keywords
Concrete face rockfill dam, Time-dependent deformation
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