[1]刘顺青,洪宝宁,方庆军,等.高液限土和红黏土的水敏感性研究[J].深圳大学学报理工版,2013,30(No.1(001-110)):78-83.[doi:10.3724/SP.J.1249.2013.01078]
 Liu Shunqing,Hong Baoning,et al.Study on the water sensitivity of high liquid limit soil and red clay[J].Journal of Shenzhen University Science and Engineering,2013,30(No.1(001-110)):78-83.[doi:10.3724/SP.J.1249.2013.01078]
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高液限土和红黏土的水敏感性研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第30卷
期数:
2013年No.1(001-110)
页码:
78-83
栏目:
土木建筑工程
出版日期:
2013-01-31

文章信息/Info

Title:
Study on the water sensitivity of high liquid limit soil and red clay
文章编号:
20130113
作者:
刘顺青12洪宝宁12方庆军12刘鑫12
1) 河海大学岩土力学与堤坝工程教育部重点实验室, 南京 210098
2) 河海大学岩土工程科学研究所,南京 210098
Author(s):
Liu Shunqing1 2Hong Baoning12Fang Qingjun12and Liu Xin12
1) Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, P.R.China
2) Geotechnical Research Institute, Hohai University, Nanjing 210098, P.R.China
关键词:
岩土工程高液限土红黏土水敏感性抗剪强度直剪试验含水率
Keywords:
geotechnical engineeringhigh liquid limit soilred claywater sensitivityshear strengthdirect shear test water content
分类号:
TU 411.2
DOI:
10.3724/SP.J.1249.2013.01078
文献标志码:
A
摘要:
以分布在广梧高速公路沿线的高液限土和红黏土为试样,通过常规直接剪切试验,测定不同含水状态下高液限土和红黏土的抗剪强度,对比分析含水率对两者抗剪强度的影响.结果表明,高液限土和红黏土的抗剪强度均与初始含水率有明显的相关关系,初始含水率越大,抗剪强度越小;随着含水率的增大,高液限土黏聚力与含水率成指数函数关系形式减小,其内摩擦角则先小幅减小,后急剧减小;随着含水率的增大,红黏土粘聚力变化具有显著的分段性,在某一含水率区段内下降较明显,当含水率接近饱和含水率时,则趋于稳定;红黏土的内摩擦角随着含水率的增加先保持稳定,后急剧减小;土颗粒间胶结物质的不同是导致高液限土和红黏土水敏感性不同的主要原因.
Abstract:
The shear strengths of high liquid limit soil and red clay taken from the Guang-Wu Expressway were measured by direct shear test, and the influences of water contents on shear strengths of the high liquid limit soil and red clay were analyzed. The results indicate that there are negative relationships between the shear strengths and initial water contents of the high liquid limit soil and red clay. With the increase of water content, the cohesion of high liquid limit soil and its water content decreases in exponential form while its internal friction angle firstly decreases by small margin and then sharply declines. Similarly, with the increase of water content, the cohesion of red clay decreases in segments. When the water content approaches saturation moisture content, the cohesion of red clay is stable. The internal friction angle of red clay remains stable at the beginning and then sharply declines with the water content increasing. High liquid limit soil and red clay have different water sensitivities mainly because of the difference in their cementing materials of soil particles.

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备注/Memo

备注/Memo:
Received:2011-06-07;Revised:2012-11-20;Accepted:2012-12-28
Foundation:National Natural Science Foundation of China(51079052);Guangdong Project of Science and Technology(2009-03-005)
Corresponding author:Professor Hong Baoning. E-mail:hongbaoning24@sohu.com
Citation:Liu Shunqing,Hong Baoning,Fang Qingjun,et al. Study on the water sensitivity of high liquid limit soil and red clay[J]. Journal of Shenzhen University Science and Engineering, 2013, 30(1): 78-83.(in Chinese)
基金项目:国家自然科学基金资助项目(51079052);广东省交通科技资助项目(2009-03-005)
作者简介:刘顺青(1985-),男(汉族),江苏省仪征市人,河海大学博士研究生. E-mail: liushunqing1985@163.com
引文:刘顺青,洪宝宁,方庆军,等.高液限土和红黏土的水敏感性研究[J]. 深圳大学学报理工版,2013,30(1):78-83.
更新日期/Last Update: 2013-01-20