| 刘元雪,郑颖人.应力洛德角变化影响的研究[J].水利学报,1999,30(8): |
| 应力洛德角变化影响的研究 |
| Study on effect of Lode angle variation of stress |
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| DOI： |
| 中文关键词: 本构关系，塑性，应力洛德角，剪胀性，土体。 |
| 英文关键词: constitutive relation, plasticity, stress Lode angle, dilatancy, soil. |
| 基金项目: |
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| 中文摘要: |
| 本文提出的土体弹塑性应力 应变关系的完全应力增量表述，可把应力洛德角变化对土体应力 应变关系的影响归因于应力增量中广义剪分量引起的剪切屈服与剪胀。同时也给出了纯应力洛德角变化引起的土体塑性变形(排水)与孔压生成(不排水)的计算式。具体算例与有关实验定性一致。 |
| 英文摘要: |
| According to the complete stress increment formulation of soil elastoplastic stress-strain relation presented in this paper, the effect of Lode angle variation of stress is owing to the shear yield and dilatancy of the generalized shear division of stress increment. The computation methods for the plastic deformation (drained) or pore pressure (undrained) caused by purevariation of stress Lode angle are also provided. The computation results accord with the relevant experimental data qualitatively. |
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