原状饱和黄土的应力-应变特性及其归一化研究  

RESEARCH ON STRESS-STRAIN CHARACTERISTICS AND NORMALIZATION OF UNDISTURBED SATURATED LOESS

作　　者：马倩倩[1] 刘保健[1] 韩珏[2] 

机构地区：[1]长安大学公路学院,西安710064 [2]长安大学建筑工程学院,西安710064

出　　处：《工业建筑》2016年第2期68-71,共4页Industrial Construction

摘　　要：原状饱和黄土由于特殊的物理性质,其应力-应变关系具有一定的离散性。通过对原状饱和黄土的固结不排水剪试验得到其应力-应变关系,并对其进行归一化处理。归一化处理中分别选围压σ3、σ3-n、主应力极限值（σ1-σ3）_（ult）作为归一化因子,结果表明：原状饱和黄土以主应力极限值（σ1-σ3）_（ult）为归一化因子的归一化效果较好。对原状黄土的归一化研究可以应用于更多的实际工程的室内土工试验中,以寻求对原状土更好的分析方法。Due to the special physical properties of undisturbed saturated loess, its stress-strain relationship is of a certain discreteness. The stress-strain relationship was got through the consolidation undrained shear test of the undisturbed saturated loess and the processing of the normalization was done. The confining pressure σ1,σ3, and principal stress limit value （σ1-σ3 ） were selected as the normalizatiort factor in the study. The results showed that the undisturbed saturated loess choosing the principal stress limit value （σ1-σ3）, as the normalization factor had a better effect. The normalized research of the undisturbed saturated loess could be applied into more practical engineering of indoor geotechnical experiments, in order to seek better methods of analyzing the undisturbed soil.

关 键 词：原状饱和黄土 固结不排水剪试验 应力-应变关系 归一化 

分 类 号：TU444[建筑科学—岩土工程]