压实黄土三轴湿化变形特性试验研究  

Experimental Research on Triaxial Slacking Deformation of Compacted Loess

作　　者：朱彭涛[1] 党进谦[1] 袁克阔[1] 张文毅[1] 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨陵712100

出　　处：《中国农村水利水电》2010年第12期104-106,共3页China Rural Water and Hydropower

摘　　要：采用常规三轴试验研究压实黄土浸水湿化变形特性,分析了不同初始含水率、压实度、围压、主应力差及湿化水头条件下黄土浸水湿化变形特点及原因。结果表明:土样固结稳定后进行浸水湿化再次达稳定状态所需时间随主应力差和初始含水率的增大而增大,随压实度、所加围压及湿化水头的增大而减小;土样湿化轴向应变随主应力差、湿化水头的增大而增大,随围压、初始含水率、压实度的增大而减小;而体变则随湿化水头增大而增大,随主应力差、围压、初始含水率、压实度的增大而减小。Based on a study of compacted loess slacking deformation character in triaxial tests,this paper analyzes the slacking deformation characters and reasons for loess in different initial water contest,compact degree,confining press,principal stress difference and the wet head.The results indicate that the time when the soil samples reach new stability after slacking increases as the increase of principal stress difference and initial water contest,and decreases as the increase in compact degree confining press and the wet head;these conditions also play an important role in axial and volume deformation.

关 键 词：压实黄土 三轴湿化 湿化变形 

分 类 号：TU44[建筑科学—岩土工程]