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Viscoplastic Modeling of Soft Soils

In: Practice of Constitutive Modelling for Saturated Soils

Author

Listed:
  • Zhen-Yu Yin

    (The Hong Kong Polytechnic University, Department of Civil and Environmental Engineering)

  • Pierre-Yves Hicher

    (Ecole Centrale de Nantes, Research Institute in Civil and Mechanical Engineering UMR CNRS GeM)

  • Yin-Fu Jin

    (The Hong Kong Polytechnic University, Department of Civil and Environmental Engineering)

Abstract

First, a one-dimensional elastic viscoplastic model is developed based on the experimental results of strain rate dependency in oedometer tests. Using this model, the coherence of strain rate dependency, creep, and stress relaxation is established. Then, the model is extended for structured clays by accounting for the effect of interparticle bonds. A three-dimensional viscoplastic model called ANICREEP is presented under the framework of Perzyna’s overstress theory, and the choice of the scaling function is discussed. The developed ANICREEP model also accounts for anisotropy and destructuration. To simulate the different tests, a general explicit algorithm is presented. The development of a MATLAB code for simulating the triaxial tests is also presented. Finally, the ANICREEP model in the ErosLab Platform is presented for practical exercises.

Suggested Citation

  • Zhen-Yu Yin & Pierre-Yves Hicher & Yin-Fu Jin, 2020. "Viscoplastic Modeling of Soft Soils," Springer Books, in: Practice of Constitutive Modelling for Saturated Soils, chapter 0, pages 229-271, Springer.
    • Handle: RePEc:spr:sprchp:978-981-15-6307-2_7
    DOI: 10.1007/978-981-15-6307-2_7
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