| 土水特征曲线(SWCC)的滞回特性模拟研究 |
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| 引用本文： | 张雪东,赵成刚,刘艳,蔡国庆.土水特征曲线(SWCC)的滞回特性模拟研究[J].力学学报,2010,18(6):920-925. |
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| 作者姓名： | 张雪东 赵成刚 刘艳 蔡国庆 |
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| 作者单位： | 中国水利水电科学研究院岩土工程研究所 北京 100048;
北京交通大学土木建筑工程学院 北京 100044 |
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| 基金项目： | 国家自然科学基金(50778013)北京市自然科学基金(8082020),水利部公益性行业科研专项(200801133)"高心墙堆石坝安全性评价技术研究" |
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| 摘 要： | 为了模拟非饱和土的水力、力学特性在多次降雨、蒸发过程中的变化特性,本文以传统域模型的基本原理为基础,推到得到了一个能够模拟SWCC滞后性的计算模型,该模型计算方法简单,易于通过程序实现,且通过与试验数据和其他模型的计算结果对比,验证了该模型的合理性,同时,这个模型可为研究在复杂吸力变化状态下非饱和土的渗流特性、强度特性以及本构模型的研究打下一定的基础。
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| 关 键 词： | 非饱和土 土水特征曲线 域模型 滞回性 |
| 收稿时间： | 2009-11-05 |
| 修稿时间： | 2010-10-18 |
SIMULATION AND HYSTERESIS MODEL FOR SOIL-WATER CHARACTERISTIC CURVES |
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| ZHANG Xuedong,ZHAO Chenggang,LIU Yan,CAI Guoqing.SIMULATION AND HYSTERESIS MODEL FOR SOIL-WATER CHARACTERISTIC CURVES[J].chinese journal of theoretical and applied mechanics,2010,18(6):920-925. |
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| Authors: | ZHANG Xuedong ZHAO Chenggang LIU Yan CAI Guoqing |
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| Institution: | Department of Geotechnical Engineering|China Institute of Water Resources and Hydropower Research,Beijing 100048;
School of Civil Engineering and Architecture;Beijing Jiaotong University,Beijing 100044 |
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| Abstract: | This paper simulates the variation law of mechanical and hydraulic behavior unsaturated soils in the process of repetitively raining or evaporation. It establishes a hysteresis model on the basis of the basic principle of traditional domain model. The model is simple and can be easily adapted to programming. It is compared to some experimental data and other hysteresis models. The reliability of the proposed model is validated. The result demonstrates its good applicability in practice. Meanwhile, this model can be used as a basis in the research of the permeability and strength characteristic, together with the constitutive theories for unsaturated soils. |
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| Keywords: | Soil-Water Characteristic Curve SWCC Hysteresis model Unsaturated soil mechanics |
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