成都地区膨胀岩土原位剪切试验研究  

In-situ Shear Test Studies on the Expansive Rock and Soil in Chengdu Area

作　　者：钱霄 朱连华[2] 陈慧娴[2] 李涛[2] 

机构地区：[1]成都兴蜀勘察基础工程公司,成都610072 [2]中国矿业大学(北京)力学与建筑工程学院,北京100083

出　　处：《土工基础》2013年第3期111-113,116,共4页Soil Engineering and Foundation

基　　金：博士学科点新教师类专项科研基金项目(20100023120003);中央高校基本科研业务费专项资金项目(2009QL02)

摘　　要：以成都望江锦园膨胀岩土体为试验对象,根据压剪实验及一次水平剪切试验得出该地区膨胀土的抗剪强度指标以及抗剪强度变化特征。试验结果表明,在相同法向压力作用下,受雨水影响小的深层土壤抗剪强度比表层土体高,深层膨胀土的抗剪强度指标均比浅层膨胀土大,这说明控制土体的含水量对于实际工程的稳定性具有重要的意义。Both the shear strength indices and the stress-strain characteristic of the expansive soil and rock materials in Chengdu Wangjiangjinyuan are studied by the in-situ pressure-shear tests and horizontal shear test. The test results show that, under the same normal stress, the soil samples from deeper depths which has less influence by the precipitation has a higher shear strength and much larger shear strength indices than samples from the shallower depth. The shear strength values have strong correlations with the water content of the soil samples. It is concluded that the importance of control the water content during the construction.

关 键 词：膨胀岩土 抗剪强度 原位剪切 含水量 

分 类 号：TU413[建筑科学—岩土工程]