Scholarlink

<p>The article is based on the presentation at the international conference “Soil Mechanics and Geotechnics in High-Rise and Underground Construction” which was held in honor of Prof. Z. G. Ter-Martirosyan (Moscow State University of Civil Engineering, September, 2024). The numerical simulation of soil-structure problems using the finite difference or finite element method requires soil constitutive models that can realistically account for general three-dimensional stress states. This is realized by formulating such models in terms of three stress invariants and making use of suitable functional forms that account for differences in material response at different angular orientations in the octahedral plane. In this paper the true-triaxial response of a clay is simulated using the Generalized Bounding Surface Model (GBSM) for saturated cohesive soils. In its most general form, the GBSM is a fully three-dimensional, time-dependent model that accounts for both inherent and stress-induced anisotropy. To better simulate the behavior of cohesive soils exhibiting softening, the model employs a non-associative flow rule. The model simulations are compared to experimentally measured values obtained from true triaxial tests performed on isotropically consolidated clay specimens and the results critically assessed.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Assessment of Model Predictive Capabilities for True Triaxial Stress States

  • 期刊论文

  • 发表日期：

    2025年3月1日

查看全文
  • Victor N. Kaliakin

摘要

The article is based on the presentation at the international conference “Soil Mechanics and Geotechnics in High-Rise and Underground Construction” which was held in honor of Prof. Z. G. Ter-Martirosyan (Moscow State University of Civil Engineering, September, 2024). The numerical simulation of soil-structure problems using the finite difference or finite element method requires soil constitutive models that can realistically account for general three-dimensional stress states. This is realized by formulating such models in terms of three stress invariants and making use of suitable functional forms that account for differences in material response at different angular orientations in the octahedral plane. In this paper the true-triaxial response of a clay is simulated using the Generalized Bounding Surface Model (GBSM) for saturated cohesive soils. In its most general form, the GBSM is a fully three-dimensional, time-dependent model that accounts for both inherent and stress-induced anisotropy. To better simulate the behavior of cohesive soils exhibiting softening, the model employs a non-associative flow rule. The model simulations are compared to experimentally measured values obtained from true triaxial tests performed on isotropically consolidated clay specimens and the results critically assessed.