岩土工程学报2017，Vol.39Issue(6)：1151-1155,5.DOI:10.11779/CJGE201706023
基于分形理论的堆石料级配设计方法
Gradation design method for rockfill materials based on fractal theory
朱晟 1邓石德 2宁志远 1王京2
作者信息
- 1. 河海大学水文水资源与水利水电工程科学国家重点实验室,江苏南京210098
- 2. 河海大学水工结构研究所,江苏南京210098
- 折叠
摘要
Abstract
According to the fractal theory,the fractal distribution formula of gradation for rockfill materials is deduced.The field gradation data of six dams with clay core and five 200 m-high CFRDs are used to verify the relevant achievements.The result shows that the correlation coefficient is basically above 0.95.Compared to the uneven coefficient Cu and curvature coefficient Co,the particle fractal dimension can objectively reflect the average characteristics of rockfill gradation.The relationship between gradation (particle fractal dimension) and density is studied by conducting the extreme dry density tests on scaled rockfill materials of different source rocks trom dacite,tuff and migmatite.In combination with the field gradation rockfill data of four dams,including Shuibuya Dam,the conclusion is drawn that the gradation is considered as the main factor affecting the compaction properties of rockfill.By means of the relationship among Cu,Cc and the particle fractal dimension,the favorable gradation scope is deduced for the coarse-grained materials such as the rockfill and transition materials,providing the basis for the gradation design and optimization of rockfill materials.关键词
堆石坝/级配/粒度分形维数/干密度Key words
rockfill dam/gradation/particle fractal dimension/dry density分类
建筑与水利引用本文复制引用
朱晟,邓石德,宁志远,王京..基于分形理论的堆石料级配设计方法[J].岩土工程学报,2017,39(6):1151-1155,5.
