| 基于正态分布的土水特征曲线独立域滞后模型 |
| |
| 引用本文： | 贺炜,陈永贵,王泓华. 基于正态分布的土水特征曲线独立域滞后模型[J]. 长沙理工大学学报(自然科学版), 2009, 6(2): 28-32 |
| |
| 作者姓名： | 贺炜 陈永贵 王泓华 |
| |
| 作者单位： | 长沙理工大学,土木与建筑学院,湖南,长沙,410004;长沙理工大学,土木与建筑学院,湖南,长沙,410004;长沙理工大学,土木与建筑学院,湖南,长沙,410004 |
| |
| 基金项目： | 国家自然科学基金，长沙理工大学人才引进基金 |
| |
| 摘 要： | 首先对非饱和土土水特征曲线滞后现象的产生机理与影响因素进行了探讨,总结并分析了各类滞后模型的原理和优劣.在此基础上引入研究土水特征曲线滞后现象的独立域模型理论,根据非饱和土干湿循环过程各个阶段的特点,分别建立了干燥/浸湿边界曲线、干燥/浸湿扫描线的积分方案.然后假定水量分布函数在整体域上符合正态分布,建立了基于正态分布的土水特征曲线独立域滞后模型,并提出了相关的修正方法.最后将该方法应用到已有试验数据的分析中.研究结果表明,该方法可较好反映非饱和土土水特征曲线的滞后现象,根据具体的干湿过程改变积分路径,即可实现扫描线的解算.
|
| 关 键 词： | 非饱和土 独立域模型 土水特征曲线 滞后现象 正态分布函数 |
Independent domain hysteretic model for SWCC by introducing normal distribution function |
| |
| HE Wei,CHEN Yong-gui,WANG Hong-hua. Independent domain hysteretic model for SWCC by introducing normal distribution function[J]. Journal of Changsha University of Science and Technology(Natural Science), 2009, 6(2): 28-32 |
| |
| Authors: | HE Wei CHEN Yong-gui WANG Hong-hua |
| |
| Affiliation: | School of Civil and Architecture Engineering;Changsha University ofScience and Technology;Changsha 410004;China |
| |
| Abstract: | It is of great necessity to study on hysteresis phenomenon of soil-water characteristic curve(SWCC),for it plays an important role in observing engineering behavior of unsaturated soils.For this,the mechanism and influential effects of the hysteresis SWCC were discussed firstly in this paper,then the principal and quality of various hysteresis models were compared.Based on these,the theory of independent domain model was introduced to study hysteresis pheonomenon of SWCC,and according to features of each st... |
| |
| Keywords: | unsaturated soil independent domain model soil-water characteristic curve hysteresis phenomenon normal distribution function |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
