人工制备结构性土力学特性试验研究  

Experimental study on mechanical properties of artificially structured soils

作　　者：刘恩龙[1] 沈珠江[1] 

机构地区：[1]清华大学水电工程系,北京100084

出　　处：《岩土力学》2007年第4期679-683,共5页Rock and Soil Mechanics

基　　金：国家自然科学基金项目(No.10272062)

摘　　要：通过对结构性土的研究可以掌握天然土受荷过程中的变形破损过程,从而为考虑土结构性的结构物设计、地基加固等提供依据。本文尝试了一种简单可行的结构性土样的人工制备方法,通过在原状土料中加入少量水泥和盐粒以形成颗粒间的胶结作用和大孔隙组构以模拟天然黏土的结构性。然后进行了室内压缩试验和不同胶结强度土样在排水和不排水条件下的三轴剪切试验,分析结构性土样的力学特性,以探讨结构性土的破损过程和变形机理。The deformation and breakage processes of natural soil under loading can be obtained by study on structured soils, on which the design of construction and soil improvement can be based when the structural influence is considered. By adding kaolin soil, cement and salt particles with different contents into the original soil samples, a new and simple artificial preparation method is presented to prepare the structured soil samples, whose natural structures, bonding and fabric between soil particles are formed. Then the compression tests and triaxial compression tests on artificial structured soils with different bonding strengths under drained and undrained conditions are conducted to study the mechanical characteristics, the breakage processes and the deformation mechanism of structured soils.

关 键 词：结构性土 人工制备 力学特性 破损过程 

分 类 号：TU411.3[建筑科学—岩土工程]