Unified description of sand behavior

Abstract

In this paper, the mechanical behavior of sand, was systematically described and modeled with a elastoplastic model proposed by Zhang et al. [1]. Without losing the generality of the sand, a specific sand called as Toyoura sand, a typical clean sand found in Japan, has been discussed in detail. In the model, the results of conventional triaxial tests of the sand under different loading and drainage conditions were simulated with a fixed set of material parameters. The model only employs eight parameters among which five parameters are the same as those used in Cam-clay model. Once the parameters are determined with the conventional drained triaxial compression tests and undrained triaxial cyclic loading tests, then they are fixed to uniquely describe the overall mechanical behaviors of the Toyoura sand, without changing the values of the eight parameters irrespective of what kind of the loadings or the drainage conditions may be. The capability of the model is discussed in a theoretical way.

Keywords

constitutive model / sand / stress-induced anisotropy / density / structure

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Acknowledgements

The authors wish to express their sincere thanks to Dr. Yongji JIN, from Korea Institute of Construction Technology (KICT), Mr. Kentaro YAMAGUCHI and Ms. Xiaohua BAO, from Post Graduate School of Nagoya Institute of Technology, for their valuable help in calculating and preparing the simulated data.

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg