压实黄土性状的室内试验研究  

Indoor Test on Properties of Compacted Loess

作　　者：张丽萍[1] 

机构地区：[1]陕西交通职业技术学院公路工程系,陕西西安710018

出　　处：《陕西交通职业技术学院学报》2010年第3期8-10,共3页Journal of Shaanxi College of Communication Technology

摘　　要：通过室内试验研究了压实黄土的变形、强度特性。从击实黄土的室内三轴压缩试验可以得出，随着压实度K的增大，压实黄土的内聚力c增大很多，而内摩擦角妒的增大幅度相对较小。通过双线法得出不同压实程度（千密度）下的压力与湿陷系数关系图可以看出，击实黄土在击实不充分的情况下仍具有湿陷性。若以200kPa下的湿陷系数为0．015为评判标准，所用土样干密度小于1．62g／em。对应压实度小于95％时具有湿陷性。The paper discusses transforming and intensity properties of compacted loess by indoor test. Triaxial compression test of compacted loess turns out that the more compaction K increases, the larger cohesion C be- comes, while internal friction angle relatively changes a little. By the double -line method, compacted loess under insufficient compaction still remains collapsibility from different pressures under various compacted density（ dry density） and collapsible coefficient of loess. If taking O. 015 collapsible coefficient as the standard beyond 200kPa, dry density of soil samples less than 1.62 g/cm3 under corresponding compacted degree less than 95% still possess collapsibility.

关 键 词：压实黄土 试验 变形 强度 

分 类 号：U416.1[交通运输工程—道路与铁道工程]