非饱和红黏土三轴试验研究  

Research of general triaxial test for unsaturated red clay

作　　者：龙万学[1] 陈开圣[2] 肖涛[1] 彭小平[1] 

机构地区：[1]贵州省交通规划勘察设计研究院,贵阳550001 [2]贵州大学土木建筑工程学院,贵阳550003

出　　处：《岩土力学》2009年第S2期28-33,共6页Rock and Soil Mechanics

基　　金：贵州省社会发展攻关项目(黔科合SZ字[2008]3014);贵州大学引进人才项目(No.x065004)

摘　　要：红黏土强度特性直接关系到路基的稳定和边坡坡度的选取,是地基工程、边坡工程和洞室工程设计计算的重要参数。以贵阳红黏土为例,对非饱和红黏土的强度特性进行了常规三轴试验研究。根据试验结果,分析了原状红黏土和压实红黏土的应力-应变关系及破坏类型,提出了压实红黏土的应力-应变关系曲线的数学模型,得出了压实红黏土抗剪强度参数与物理指标指标之间的关系。The strength characteristics of unsaturated red clay is an important calculated parameter of foundation engineering,slope engineering and underground engineering.The strength characteristics of Guiyang unsaturated red clay are studied by the triaxial test.The stress-strain relation and breakage type for original red clay and compacted red clay are discussed.The mathematical model of stress-strain relation for compacted red clay is presented.The relation between shearing intensity parameters and physical properties is obtained.

关 键 词：非饱和红黏土 常规三轴试验 应力-应变关系 抗剪强度参数 

分 类 号：TU411[建筑科学—岩土工程]