摘要
以湿陷性黄土为研究对象,本文通过室内试验和现场试验,探讨湿陷性黄土在浸水条件下对其工程性质的影响。分析了其抗压强度、抗剪强度、渗透性和湿陷性在水作用下的变化规律,试验结果表明,水的参与改变了土的物理状态,抗剪强度指标在浸水初期急剧下降,湿陷完成后逐渐恢复,湿陷量减少了90%以上。根据现场试验资料绘出了绝对湿陷量和湿陷速度随时间变化的曲线,拟合得出具有一定精度的表示公式,为研究预湿黄土处理提供参考。
Taking collapsible loess as the research object,the article explores the effects of the engineering properties of collapsible loess under soaking conditions by laboratory and field tests. The paper analyzes its compressive strength, shear strength, permeability and collapsible variation under the action of water. The experimental results showed that the participation of water changes the physical state of soil, shear strength index declined sharply in the early soaking and gradual recovery after collapsible complete, collapse settlement reduced by more than 90%. Based on field test data, the absolute collapse settlement and collapse speed velocity versus time curve fitting formula has come to represent a certain precision, and provide reference for research of pre-wet loess treatment.
出处
《四川建筑科学研究》
北大核心
2015年第2期162-165,共4页
Sichuan Building Science
关键词
湿陷性黄土
浸水试验
湿陷变形
湿陷量
collapsible loess
soaking test
collapse deformation
collapse settlement
