Abstract
A constitutive model is presented to describe the mechanical behaviors of granular soils. A S-shaped normal compression line (NCL) is first expressed by a simple equation. Subsequently, a state parameter (ξ) is defined to quantify the current state of granular soils, and a unified hardening parameter (H) that is a function of the state parameter (ξ) is developed to govern the hardening process of the drop-shaped yield surface. A constitutive model for granular soils is proposed by combining with flow rule. Finally, the comparison between the predictions and the test results of Cambria sand indicates that the model is able to describe the mechanical behaviors of granular soils in a large stress range.
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Acknowledgement
This work was supported by the National Basic Research Program of China (973 Program, Grant No. 2014CB47006), the National Natural Science Foundation of China (Grant Nos. 51579005 and 11672015).
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Yao, Yp., Liu, L., Luo, T. (2018). UH Model for Granular Soils. In: Wu, W., Yu, HS. (eds) Proceedings of China-Europe Conference on Geotechnical Engineering. Springer Series in Geomechanics and Geoengineering. Springer, Cham. https://doi.org/10.1007/978-3-319-97112-4_24
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DOI: https://doi.org/10.1007/978-3-319-97112-4_24
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