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Modeling rate-dependent behaviors of soft subsoil under embankment loads
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Yin, Zhen-yu, Huang, Hong-wei, Utili, Stefano and Hicher, Pierre-Yves (2009) Modeling rate-dependent behaviors of soft subsoil under embankment loads. Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, Vol.31 (No.1). pp. 109-117. ISSN 1000-4548.
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Official URL: http://www.cgejournal.com/EN/abstract/abstract1311...
Abstract
The paper aims to model the rate-dependent behaviors of subsoil under embankment loads using a simple elasto-viseoplastic model, based on the modified Cam-clay model and Perzyna’s overstress theory, coupled with Biot's
consolidation theory. A geotextile reinforced embankment is studied. An inverse analysis procedure is proposed to identify the viscosity parameters of subsoil from the settlements due to the first few loading phases. ln order to assess the performance of the proposed model, numerical predictions using the determined parameters are then compared with those obtained by four
other models. Special attention is given to the effect of reinforcement on delayed deformations and on the stability of the embankments and foundations. The performance ofthe proposed inverse analysis procedure is also assessed. Finally, according to the simulation runs, it can be concluded that the proposed model is easy to be calibrated and suitable for geotechnical projects. The proposed model can describe the rate-dependent behaviors of soft soil compared with the modified Cam-clay model, with accuracy using the simple constitutive equations compared with other viscoplastic models.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Journal or Publication Title: | Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | ||||
Publisher: | Editorial Office of the Chinese Journal of Geotechnical Engineering | ||||
ISSN: | 1000-4548 | ||||
Official Date: | 7 March 2009 | ||||
Dates: |
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Volume: | Vol.31 | ||||
Number: | No.1 | ||||
Number of Pages: | 9 | ||||
Page Range: | pp. 109-117 | ||||
Status: | Peer Reviewed | ||||
Access rights to Published version: | Open Access (Creative Commons) |
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