| 密度和干湿循环对黄土土-水特征曲线的影响 |
| |
| 引用本文： | 刘奉银,张昭,周冬,赵旭光,朱良.密度和干湿循环对黄土土-水特征曲线的影响[J].岩土力学,2011,32(Z2):132-136. |
| |
| 作者姓名： | 刘奉银 张昭 周冬 赵旭光 朱良 |
| |
| 作者单位： | 西安理工大学岩土工程研究所;黄河勘测规划设计有限公司;中水珠江规划勘测设计有限公司; |
| |
| 基金项目： | 国家自然科学基金项目(No.10872162); 陕西省黄土力学与工程重点实验室重点科研计划项目(No.05JS33); 西安理工大学岩土工程学科建设项目(No.106003081) |
| |
| 摘 要： | 土-水特征曲线在非饱和土力学中扮演着重要的角色。影响非饱和土土-水特征曲线的因素很多,如初始密度、干湿循环、荷载等。利用GCTS土-水特征曲线仪,主要测定了不同初始干密度的重塑非饱和黄土试样的减湿土-水特征曲线,选取合理的土-水特征曲线模型进行数据拟合,通过分析模型拟合参数来研究初始干密度对非饱和黄土土-水特征曲线的影响;并对给定初始干密度的试样进行了2次干湿循环试验,测定相应的减—增湿土-水特征曲线,通过对比干湿循环曲线上体积含水率的差异,提出了"滞回度"的概念,初步研究了黄土土-水特征曲线在干湿循环下的滞回特性规律。这些成果将为研究应力作用下的土-水特征曲线模型以及考虑干湿循环的力-水耦合本构模型发挥重要作用。
|
| 关 键 词： | 非饱和土 土-水特征曲线 初始密度 干湿循环 |
| 收稿时间： | 2011-06-09 |
Effects of initial density and drying-wetting cycle on soil water characteristic curve of unsaturated loess |
| |
| LIU Feng-yin,ZHANG Zhao,ZHOU Dong,ZHAO Xu-guang,ZHU Liang.Effects of initial density and drying-wetting cycle on soil water characteristic curve of unsaturated loess[J].Rock and Soil Mechanics,2011,32(Z2):132-136. |
| |
| Authors: | LIU Feng-yin ZHANG Zhao ZHOU Dong ZHAO Xu-guang ZHU Liang |
| |
| Institution: | 1. Institute of Geotechnical Engineering, Xi’an University of Technology, Xi’an 710048, China; 2. Yellow River Engineering Consulting Co., Ltd., Zhengzhou 450003, China; 3. China Water Resources Pearl River Planning Surveying and Designing Co., Ltd., Guangzhou 510610, China |
| |
| Abstract: | Soil water characteristic curve(SWCC) plays a significant role in unsaturated soil mechanics.There are several factors influencing the soil water characteristic curve,such as initial density,dry-wetting cycle and stress,etc.A series of tests are carried out by means of GCTS-type SWCC device for soil water characteristic curve for remoulded unsaturated loess specimens at different bulk densities.Based on test results,after a well-adapted selection of soil water characteristic curve model,the influence of ini... |
| |
| Keywords: | unsaturated soil soil-water characteristic curve initial density drying-wetting cycle |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
|
