| 宁明非饱和膨胀土静止侧压力系数 |
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| 引用本文： | 杨和平,章高峰,张锐,倪啸.宁明非饱和膨胀土静止侧压力系数[J].长沙理工大学学报(自然科学版),2009,6(1):1-5,35. |
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| 作者姓名： | 杨和平 章高峰 张锐 倪啸 |
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| 作者单位： | 长沙理工大学,交通运输工程学院,湖南,长沙,410004 |
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| 基金项目： | 交通部西部开发重点科研资助项目 |
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| 摘 要： | 针对现行工程中土的静止侧压力系数K0大多依经验确定并取定值的缺陷，利用GDS三轴系统对两种宁明非饱和膨胀土开展了系统的室内K0固结试验研究，获得同种性质土的K0是含水率及围压的函数、其值随含水率和围压的增大而增大的变化规律．在此基础上进一步导出K0与含水率及围压之间的量化关系式．
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| 关 键 词： | 非饱和膨胀土 静止侧压力系数K0 K0固结试验 含水率 围压 |
Lateral pressure coefficient of Ningming unsaturated expansive soil |
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| YANG He-ping,ZHANG Gao-feng,ZHANG Rui,NI Xiao.Lateral pressure coefficient of Ningming unsaturated expansive soil[J].Journal of Changsha University of Science and Technology:Natural Science,2009,6(1):1-5,35. |
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| Authors: | YANG He-ping ZHANG Gao-feng ZHANG Rui NI Xiao |
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| Institution: | School of Communications and Transportation Engineering;Changsha Universityof Science and Technology;Changsha 410004;China |
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| Abstract: | Aiming at the defects that lateral pressure coefficient,K0,is mostly assumed to be constant by engineering experience in practice,systemic tests of K0 consolidation on two kinds of Ningming unsaturated expansive soil using GDS triaxial apparatus were carried out.The results indicate that K0 is a function of water content and confining pressure.For the same kind of soil,K0 increases approximatively linearly with confining pressure,but nonlinearly with water content,the increase rate of which is small at the ... |
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| Keywords: | unsaturated expansive soil lateral pressure coefficient K0 consolidation test water content confining pressure |
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