岩土工程学报Issue(z2)：120-124,5.DOI:10.11779/CJGE2014S2020
兰州马兰、离石压实黄土抗剪强度影响因素探讨
Influencing factors for shear strength of Malan and Lishi compacted loess in Lanzhou
摘要
Abstract
The shear strength is the most important mechanical index of loess, which strongly depends on the degree of compaction and moisture content. To investigate the performance of Malan and Lishi loess, direct shear tests are conducted on the samples taken from undisturbed loess site in Qingbaishi, Lanzhou. The shear strength indexes including the cohesion and internal friction angle under different degrees of compaction and moisture contents are obtained. The effects of compaction and moisture content of Lishi and Malan compacted loess are studied. The results show that the cohesion increase with the increase of compaction, and that of Lishi loess has greater increase than that of Malan loess. The cohesion increases slightly with the increase of moisture content when it is less than optimum water, while the cohesion decreases sharply with the increase of moisture content when it is greater than the optimum moisture content. The internal friction angle increases with the increase of compaction and slightly decreases with the increase of water content of compacted Lishi and Malan loess.关键词
压实黄土/压实度/含水率/黏聚力/内摩擦角Key words
compacted loess/degree of compaction/water content/cohesion/internal friction angle分类
建筑与水利引用本文复制引用
贾亮,朱彦鹏,朱鋆川..兰州马兰、离石压实黄土抗剪强度影响因素探讨[J].岩土工程学报,2014,(z2):120-124,5.基金项目
甘肃省科技厅重大专项项目（2013GS07716）；甘肃省自然科学基金项目（1308RJYA023）；兰州理工大学博士科研基金项目 （）
