摘要
粉土属于工程性质不良的土质,作为路基填料压实时存在诸多技术难点。作者从粉土粒度分布特性入手,研究了粒度分布与粉土压实效果的相关性。以分形维数作为表征粉土粒度分布特征的指标,基于最紧密堆积理论,定量分析了粒度分布特征与最大干密度的相关性。提出用粒度分布偏差系数来评价粒度分布对压实效果的影响,并建立了粒度分布偏差系数与最大干密度的关系,根据该结果,通过粒度分布特点即可预估土体能达到的最佳压实效果。
Silt is one kind of soils those have bad engineering properties.They are difficult to become compaction.This paper is aimed to study on the relationship between particle size distribution and compaction characteristics of silts.Fractal dimension is taken as the particle size distribution characterization parameters.Based on the closest packing theory,the deviation coefficient which reflected the fractal dimension deviation between silt particle size distribution and the most packed theoretical curve-fuller curve was put forward.And the relationship equation of maximum dry density and deviation coefficient was established.According to the function,the compaction effect could be predestinated.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2010年第14期58-61,共4页
Journal of Wuhan University of Technology
基金
河南省科技攻关项目(07210360061)
关键词
道路工程
粉土
粒度分布
压实
分形
road engineering
silt
particle distribution
compaction
fractal dimension
