| 结构性土的强度准则 | |
| 刘恩龙 ; 沈珠江 ; LIU En-long ; SHEN Zhu-jiang | |
| 2010-06-07 ; 2010-06-07 | |
| 关键词 | 结构性土 二元介质模型 强度准则 剪切抗力贡献率 structured soils geo-binary medium model strength criterion shear resistance contribution ratio TU43 |
| 其他题名 | Strength criterion for structured soils |
| 中文摘要 | 基于岩土二元介质模型思想,本文建议了一个适用于结构性土的强度准则。结构性土的土工特性与重塑土的有很大的区别,强度变化规律方面也不例外。已有的强度准则是建立在重塑土或扰动土的基础上的,它们不能很好的反映结构性土的强度变化规律。在大量的结构性土强度试验资料的基础上,分析了结构性土的强度变化规律和机理,基于考虑结构性岩土材料破损机理的二元介质模型概念,通过引入随应力状态变化的剪切抗力贡献率参数,建立了结构性土的强度准则,并对准则中参数的变化对强度规律的影响进行了分析。最后与结构性土的真三轴和常规三轴试验结果进行了对比,表明所建议的强度准则具有较好的适用性。; Based on the concept of geo-binary medium model,a strength criterion for structured soils was proposed.The soil engineering characteristics of structured soils and reconstituted soils were different in many aspects,including the strength properties.The strength criteria currently established were formulated on the basis of the properties of reconstituted or reconstituted soils,which could not reflect the influence of soil structures(bonding and fabric) on the properties of structured soils.After the strength behavior and mechanisms of structured soils were analyzed from many strength tests of the structured soils,the strength criterion for structured soils was established based on the concept of geo-binary medium model considering the fracture mechanism of geomaterials.The parameter of shear resistance contribution ratio was introduced and the determination of the parameters was also presented.By comparisons of predictions with experimental data of structured soils conducted under true triaxial and conventional triaxial stress conditions,it was demonstrated that the new strength criterion could provide satisfactory qualitative and quantitative modeling of strength features of structured soils.; 国家自然科学基金资助项目(50479007) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/46176]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 刘恩龙,沈珠江,LIU En-long,等. 结构性土的强度准则[J],2010, 2010. |
| APA | 刘恩龙,沈珠江,LIU En-long,&SHEN Zhu-jiang.(2010).结构性土的强度准则.. |
| MLA | 刘恩龙,et al."结构性土的强度准则".(2010). |
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