摘要
淮北平原钙质结核土是一种区域性特殊土,其工程地质性质领域的研究基本处于空白状态。其力学特性研究的开展,受到钙质结核的限制,传统小型试样的室内试验制样困难,甚至根本无法开展试验。文章采取和制作了多组钙质结核土原状和重塑土样,进行了大型直接剪切试验;分析了原状钙质结核土的级配特征,获得了原状土样的强度指标,并根据重塑土样的试验研究了土体c、φ值之间的变化关系。
As a kind of regional special soil,the engineering geological properties research of cohesive soil containing calcareous nodules in Huaibei Plain needs to be strengthened.Because of the large particle sizes,the research on the dynamics characteristics of cohesive soil containing calcareous nodules is hard to be implemented by the conventional indoor test for small-sized samples.So the large-scale direct shear tests on original and remoulded samples of cohesive soil containing calcareous nodules are carried out in this paper.The gradation characteristics of original samples is analyzed,the shear strength indexes of original samples are gotten,and the correlation between c and φ is studied based on the tests on the remoulded samples.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第2期257-261,共5页
Journal of Hefei University of Technology：Natural Science
基金
国家自然科学基金资助项目(40872190
41002117)
关键词
钙质结核土
大型直接剪切试验
级配特征
强度指标
cohesive soil containing calcareous nodule
large direct shear test
gradation characteristic
strength index
