粗细粒混合土力学特性研究  

Study on Mechanical Characteristics of Soils Mixed with Coarse and Fine Particles

作　　者：石杰[1] 王毅[1] 樊殷莉[1] 李鲲[1] 熊杨[1] 

机构地区：[1]四川大学水利水电学院,成都610065

出　　处：《西北水电》2013年第1期54-56,共3页Northwest Hydropower

摘　　要：为对比分析不同细粒含量(小于0.075 mm)下粗细粒混合土的力学特性,文章进行了3组不同细粒含量的粗细粒混合土的固结排水三轴压缩试验,并分析了细粒含量对混合土的应力-应变和变形的影响。试验发现:相同围压下,对于混合土中细粒含量较高的土样具有更低的应力水平;低围压下,随着偏应力的增加土样的体积开始收缩,且细粒含量越高,收缩越慢。the consolidated drained triaxial compression tests on three groups （with different fine-particle contents） of soils mixed with fine and coarse particles are conducted to compare and analyze the mechanical characteristics of the soils mixed with fine and coarse parti- cles in condition of three different fine-particle （grain size smaller than 0. 075 mm） contents. Furthermore, affects by the fine-particle contents on concrete stress-strain and deformation are studied. The tests present that in condition of the same surrounding pressure, soils with high content of fine particles is with lower stress ; in condition of lower surrounding pressure, soil volume starts contracting with in- crease nf ~lnntine ~tro~ Th~ hlcrh^r th~ Gnp-nnrtlol~ o^nt^nt i~ th~ ~1 th~ ~;I ~~.o^e~

关 键 词：细粒含量 混合土 应力应变关系 变形 力学特性 

分 类 号：TV41[水利工程—水工结构工程]