岩土工程学报2015，Vol.37Issue(10)：1780-1785,6.DOI:10.11779/CJGE201510005
考虑细观单粒强度的堆石料破碎特性研究
Modeling particle breakage of rockfill materials based on single particle strength
摘要
Abstract
The existing researches indicate that the mechanical properties of rockfill materials are significantly affected by the particle crushing. In order to reproduce the fundamental features of particle breakage, the changes of the particle size distribution (PSD) have to be described in mathematical form, i.e., to track the evolution of the PSD. This is difficult for the triaxial test processes due to the measurability limit of particle breakage. The single particle strength of the rockfill is measured and the crushing sample is sieved. The results show that the strengths of particles obey the Weibull statistics, and that the fractal distribution is found for PSD of crushed aggregates. Based on those findings, the changes of PSD can be described during the triaxial test process, the breakage of the triaxial tests is simulated, and the results reveal that the breakage process well agrees with the experimental data.关键词
堆石料/Weibull分布/分形破碎/单粒强度Key words
rockfill material/Weibull distribution/fractal crushing/single-particle strength分类
建筑与水利引用本文复制引用
迟世春,王峰,贾宇峰,李士杰..考虑细观单粒强度的堆石料破碎特性研究[J].岩土工程学报,2015,37(10):1780-1785,6.基金项目
国家自然科学基金项目(51179024,51379029) （51179024,51379029）
