Scholarlink

<p>This study aims to elaborate on calibration procedures for elastic and plastic parameters of the proposed model in the former companion study. We also conducted the parameter sensitivity analysis with an in-depth discussion of the corresponding physical mechanisms. Most parameters in this thermodynamic model can be determined by standard laboratory tests. Parameter sensitivity analysis indicates that the hardening parameters and volumetric dissipation–migration parameter significantly influence the model predictions on the stress path, deviatoric stress, excess pore pressure and granular temperature of untreated sands, but they have no impact on the critical-state line of untreated sands. Furthermore, the model predictions for energy dissipation of biotreated sands depend on the hardening parameters, cementation degradation parameters, and initial cementation factor. Based on the valid calibrations of parameters, the proposed thermodynamic model can accurately capture the variation of peak strength, the evolution of excess pore pressure, and the critical-state line of biotreated sands with various biotreatment levels.</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

A general thermodynamic model for biotreated sands: calibrations and predictions

  • 期刊论文

  • 发表日期：

    2026年4月25日

查看全文
  • Yang Xiao,
  • Fang Liang,
  • Zhichao Zhang,
  • Qingyun Fang,
  • Hanlong Liu,
  • Jian Chu

摘要

This study aims to elaborate on calibration procedures for elastic and plastic parameters of the proposed model in the former companion study. We also conducted the parameter sensitivity analysis with an in-depth discussion of the corresponding physical mechanisms. Most parameters in this thermodynamic model can be determined by standard laboratory tests. Parameter sensitivity analysis indicates that the hardening parameters and volumetric dissipation–migration parameter significantly influence the model predictions on the stress path, deviatoric stress, excess pore pressure and granular temperature of untreated sands, but they have no impact on the critical-state line of untreated sands. Furthermore, the model predictions for energy dissipation of biotreated sands depend on the hardening parameters, cementation degradation parameters, and initial cementation factor. Based on the valid calibrations of parameters, the proposed thermodynamic model can accurately capture the variation of peak strength, the evolution of excess pore pressure, and the critical-state line of biotreated sands with various biotreatment levels.