Binary medium modeling of the brittleness variety of geomaterials under different stress paths

LIU En-long; SHEN Zhu-jiang

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Binary medium modeling of the brittleness variety of geomaterials under different stress paths

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- Binary medium modeling of the brittleness variety of geomaterials under different stress paths
- Vol. 27, Issue 2, (2006)
- 作者机构：
  
  清华大学水利水电工程系,北京,100084
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU443
- Online First：25 October 2013，
  
  Published：2006
- 稿件说明：
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LIU En-long, SHEN Zhu-jiang. Binary medium modeling of the brittleness variety of geomaterials under different stress paths[J]. 2006, 27(2).
DOI：

LIU En-long, SHEN Zhu-jiang. Binary medium modeling of the brittleness variety of geomaterials under different stress paths[J]. 2006, 27(2). DOI：

摘要

试验研究表明，岩土材料在加卸荷时表现出不同的变形破坏特性，卸荷时脆性增加。建议了一个可以描述材料脆性变化的脆性指数，并验证了B指标能较好地描述岩土材料在加卸荷时的脆性变化。应用二元介质模型，对岩样在卸载周围应力过程中的应力-应变关系进行了模拟，表明这一模型不但可以模拟岩样在低围压下的应变软化到高围压下的应变硬化现象，而且可以模拟岩样在卸载周围应力过程中的变形破坏过程，特别是对于表现为应变软化的岩样，可以反映出应力峰值前后卸围压时的变形破坏过程的差别。

Abstract

Binary medium modeling of the brittleness variety of geomaterials under different stress paths

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