摘要
以宁夏同心黄土为研究对象,初始含水量、干密度、自重压力、超固结比为因素,设计正交实验方案进行了黄土的湿陷性研究.结果表明:黄土的湿陷系数随初始含水量、干密度、自重压力、超固结比的增大而减小;各因素影响的主次顺序为初始含水量、超固结比、干密度和自重压力,初始含水量和超固结比是影响黄土湿陷性的重要因素.在正交实验结果分析的基础上,以初始含水量为因素进行了单因素实验,发现湿陷系数与初始含水量有很好的线性相关性,并得到拟合关系式,对当地湿陷性黄土地基处理有很好的指导意义.
Taking Ningxia Tongxin loess as research object, initial water content, dry density and self- weight pressure, over-consolidation ratio as factors, orthogonal test plan is designed to study collapsibility of loess. Experiment shows that collapsibility of loess decreases with initial water content, dry density and self-respect pressure increasing; the important order of the factors that affect the loess collapsibility are initial water content, over-consolidation ratio, dry density, self-weight pressure in turn. Initial water content and over-consolidated ratio are important factors. Based on the orthogonal test results, a single factor experiment with initial water content is made, the collapsible coefficient and initial water content shows good linear correlation.
出处
《宁夏大学学报（自然科学版）》
CAS
2012年第2期156-158,共3页
Journal of Ningxia University(Natural Science Edition)
关键词
黄土
湿陷性
作用机理
loess
collapsibility
action mechanism
