摘要
用兰州细砂做了一系列的剪切蠕变试验,得到了其剪切蠕变特性及强度松驰方程。文中分析了蠕变破坏特征值与剪应力之间的关系,还证实在负温区可能存在一个界限值,以此为界,冻土的蠕变机制有所不同。
A series of shear strength and shear creep tests was conducted on remolded frozen Lanzhou fine sand. It was obtained instantaneous shear strength and shear creep behaviour and strength relaxation equation. The paper analyses the relationship between creep failure characteristic values and shear stress, and confirms that there is a dividing value in negative temperature range. The mechanism of creep deformation of frozen soils may be various in the two ranges.
出处
《冰川冻土》
CSCD
北大核心
1993年第3期492-497,共6页
Journal of Glaciology and Geocryology
基金
国家自然科学基金
关键词
冻结细砂
剪切强度
剪切蠕变
冻土
frozen fine sand, shear strength, shear creep, long-term strength
