摘要
通过对全风化花岗岩的慢剪试验,指出了在直剪试验中出现的两种垂直位移变化形式,其对土体的剪胀剪缩性质的 反映与三轴试验是一致的。剪胀的发生与土体的密实程度密切相关;随垂直压力的增大,剪胀发生所需剪应力也增大;剪应 力达到峰值所需要剪位移总是比剪胀发生时所需的剪位移大。
This paper discusses dilatation in direct shear tests. There are 2 types of vertical displacements in direct shear tests. They reflect same dilatation and shrinking behavior of soil as those in triaxial tests. The dilatation is related to the density of soil. The shear stress required for the dilatation increases with the normal stress. The shear displacement for the dilatation is always less than that at the peak shear stress.
出处
《工程地质学报》
CSCD
2005年第1期44-48,共5页
Journal of Engineering Geology
基金
香港大学边坡信息资讯中心资助项目(香港全风化花岗岩的微结构综合研究NO1)
