渗漏情况下非饱和膨胀土地基变形的探讨  

A STUDY OF THE DEFORMATION ON SEEPAGE IN UNSATURATED EXPANSIVE SOIL FOUNDATION

作　　者：翟聚云[1] 张国强[1] 

机构地区：[1]平顶山工学院,平顶山467000

出　　处：《地质与勘探》2007年第6期116-119,共4页Geology and Exploration

基　　金：河南省科技发展计划项目(项目编号:624250023)

摘　　要：非饱和土是三相复合介质,与饱和土相比,相的增加导致了其物理性质、应力应变关系、变形特性等方面较饱和土复杂得多。渗漏情况下非饱和膨胀土地基的增湿膨胀量,受土层很多因素影响,本文讨论了初始干密度已知的条件下,不同的渗水时间含水量变化、上覆压力的耦合变化,由此探索了满足较高工程精确度要求的变形量的计算方法,并对该计算模式进行了验证。Unsaturated expansive soil is compound medium of three- phase. AS it has much more phases than saturated soils. It is of more complex on physical property, stress and strain relation and of distortery characteristion. The deformation of unsaturated expansive soil foundation for seepage is influenced by many factor. This paper discused the coupling effects between pressure, moisture content at different period of time. When initial dry density is known. The calculation methods which fulfil the aecuraly requirements of engineering is researched. The correctness of the pattern has been confirmed, This method has importand application value in engineering.

关 键 词：非饱和膨胀土 上覆压力 地基变形 膨胀率 

分 类 号：TU433[建筑科学—岩土工程] TU443[建筑科学—土工工程]