EI、Scopus 收录
中文核心期刊
罗汀 高智伟 万征 姚仰平. 土剪胀性的应力路径相关规律及其模拟[J]. 力学学报, 2010, 42(1): 93-101. DOI: 10.6052/0459-1879-2010-1-2008-484
引用本文: 罗汀 高智伟 万征 姚仰平. 土剪胀性的应力路径相关规律及其模拟[J]. 力学学报, 2010, 42(1): 93-101. DOI: 10.6052/0459-1879-2010-1-2008-484
Ding Luo, Zhiwei Gao, Yangping Yao. Influence of the stress path on dilatancy of soils and its modeling[J]. Chinese Journal of Theoretical and Applied Mechanics, 2010, 42(1): 93-101. DOI: 10.6052/0459-1879-2010-1-2008-484
Citation: Ding Luo, Zhiwei Gao, Yangping Yao. Influence of the stress path on dilatancy of soils and its modeling[J]. Chinese Journal of Theoretical and Applied Mechanics, 2010, 42(1): 93-101. DOI: 10.6052/0459-1879-2010-1-2008-484

土剪胀性的应力路径相关规律及其模拟

Influence of the stress path on dilatancy of soils and its modeling

  • 摘要: 建立能够反映土的变形和强度特性应力路径依存性的本构模型, 首先需要解决土剪胀规律的应力路径依存性问题. 对黏土和砂土剪胀性的应力路径依存性做了系统的分析和比较,模型预测与试验结果的比较表明: 剑桥模型和统一硬化模型在描述土的这一特性方面都有一定缺陷; 采用部分塑性体应变与塑性剪应变耦合的思路建立的渐近状态模型能够较好地反映土剪胀性的应力路径依存性.

     

    Abstract: One of the most important characteristics of soil is itsdilatancy in which plastic volumetric strain occurs during shearing. Theinfluence of stress path on the dilatancy of soils is systematicallyanalyzed in this paper with the asymptote state model proposed by authors etal (Luo et al, 2009), in which the part coupling effect between the plasticvolumetric strain and plastic shear strain is assumed firstly. Thecomparisons are carried out between the test results of the dilatancy andthe model predictions of the original Cam-Clay model, the modified Cam-Claymodel, the unified hardening model (Yao et al, 2008) and our proposed model.The comparisons results demonstrate that the asymptote state model candescribe the effect of the stress path on the dilatancy of soils in a betterway in the stress-strain and strength behaviors of soils.

     

/

返回文章
返回