| 沈珠江,胡再强.黄土的二元介质模型[J].水利学报,2003,34(7): |
| 黄土的二元介质模型 |
| Binary medium model for loess |
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| DOI： |
| 中文关键词: 黄土 二元介质 本构模型 浸水软化 应变软化 |
| 英文关键词: loess binary medium model constitutive relationship wetting softening strain softening |
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| 中文摘要: |
| 把天然黄土看作由胶结块和软弱带组成的非均质材料，建议了一个黄土二元介质模型。文中首先分析了胶结块的浸水软化和应变软化机理，在此基础上建立了胶结块和软弱带的应力-应变关系和相应的破损演化规律。模型参数可以通过原状试样和重塑试样的常规试验测定。 |
| 英文摘要: |
| In this paper, a binary medium model for loess is proposed in which the natural loess is regarded as a heterogeneous material consisting of bonded blocks and weakened bands. The loess may be weakened due to wetting and/or strain. Based on these assumptions, the stress strain relationship of bonded blocks and bands as well as the evolution law of breakage parameters are deduced. The method for determining the constants of the model according to the conventional oedometer test and triaxial test for intact and remolded samples is also suggested. |
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