| 黄土的二元介质模型 |
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| 引用本文： | 沈珠江,胡再强.黄土的二元介质模型[J].水利学报,2003,34(7):1-6. |
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| 作者姓名： | 沈珠江 胡再强 |
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| 作者单位： | 1. 清华大学,水利水电工程系,北京,100084
2. 西安理工大学,水利水电学院,陕西,西安,710048 |
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| 基金项目： | 国家自然科学基金项目(10272062) |
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| 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。
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| 关 键 词： | 黄土 二元介质 本构模型 浸水软化 应变软化 |
| 文章编号： | 0559-9350(2003)07-0001-06 |
| 修稿时间： | 2002年9月20日 |
Binary medium model for loess |
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| SHEN Zhujiang.Binary medium model for loess[J].Journal of Hydraulic Engineering,2003,34(7):1-6. |
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| Authors: | SHEN Zhujiang |
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| Affiliation: | Tsinghua University, Beijing 100084,China |
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| Abstract: | 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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| Keywords: | loess binary medium model constitutive relationship wetting softening strain softening |
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