| 张超杰,王立忠,陈云敏.一维弹黏塑性固结模型研究[J].水利学报,2003,34(5):0016-0023 |
| 一维弹黏塑性固结模型研究 |
| Study on one-dimensional elastic visco-plastic consolidation model |
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| DOI： |
| 中文关键词: 固结 弹黏塑性 屈服准则 表观前期固结压力 |
| 英文关键词: consolidation elastic visco-plastic yield rule apparent pre-consolidation pressures |
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| 中文摘要: |
| 建模时考虑固结压缩的分段性，引入参考应力状态概念、弹黏塑性屈服准则以及一些其它观点，同时结合殷建华[3]等提出有效应力、应变和蠕变速率的唯一性原则，建立了一个原状土的一维弹黏塑性固结模型。计算表明，该模型能适用于一维条件下任何加载方式的固结模拟，能描述表观前期固结压力的应变率效应、次固结引起的表现前期固结压力增加等一些已被试验证实但不能被太沙基固结理论反映的现象。 |
| 英文摘要: |
| The authors established a new one-dimensional elastic visco-plastic consolidation model based on several theoretic concepts, such as compressibility characteristics of soil, reference state and yield rule of elastic visco-plastic soils, etc. The unique relationship between effective stress, strain and creep rate proposed by the author of ref. [3] was considered. the results of simulation indicated that the new model can be applied to any loading manner and was able to describe the phenomena, such as the strain rate of apparent pre-consolidation pressures and increment in apparent pre-consolidation pressures due to creep during sustained loading, which the Terzaghi consolidation model could not depict. |
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