大连理工大学学报2018，Vol.58Issue(2)：153-158,6.DOI:10.7511/dllgxb201802007
基于分形理论的疏浚淤泥固化土孔隙结构定量化研究
Quantitative study of pore structure of dredged silt solidified soil based on fractal theory
摘要
Abstract
On the basis of analyzing the cumulative mercury injection curves and SEM photos of dredged silt soildified soil samples,the fractal dimension of pore structure of dredged silt solidified soil is calculated by using the fractal theory,and the relationship between fractal dimension and microstructure parameters, macro mechanical properties and proportion of curing agents is established.The results show that the micro pore structure of dredged silt solidified soil has obvious fractal characteristics,and its fractal dimension is between 2.8-3.2.The fractal dimension of dredged silt solidified soil has a good correlation with average pore diameter,pore surface area,bearing ratio, cohesive force,internal friction angle and the content of mineral powder.With the increasing of the fractal dimension,the average pore diameter of solidified soil and the compression index decrease,and pore surface area,bearing ratio,cohesive force and internal friction angle increase.The fractal dimension increases with the increasing of mineral powder content.The fractal dimension can be used to describe quantitatively the pore structure characteristics and mechanical properties of dredged silt solidified soil.It can also provide data support for the analysis of macro and micro characteristics of dredged silt solidified soil and the establishment of the model.关键词
疏浚淤泥/孔隙结构/力学性质/压汞试验/分形维数Key words
dredged silt/pore structure/mechanical properties/mercury inj ection test/fractal dimension分类
建筑与水利引用本文复制引用
孙秀丽,宋碧颖,刘文化,沈起,姚君..基于分形理论的疏浚淤泥固化土孔隙结构定量化研究[J].大连理工大学学报,2018,58(2):153-158,6.基金项目
国家自然科学基金资助项目(51609102) （51609102）
大连理工大学海岸和近海工程国家重点实验室开放基金资助项目(LP1613) （LP1613）
江苏省大学生创新训练项目(2016101Z). （2016101Z）
