中国铁道科学2025，Vol.46Issue(3)：32-41,10.DOI:10.3969/j.issn.1001-4632.2025.03.04
级配对道砟集料性能影响的灰色系统分析
Influence of Gradation on Ballast Aggregate Performance Based on Grey System Analysis
摘要
Abstract
To study the influence of ballast gradation on the physical and mechanical properties of railway ballast aggregates,this paper proposes a quantitative method for gradation curves,converting gradation curve parameters into deterministic function expressions.Furthermore,a method combining discrete element simulation with grey system theory is used to analyze the influence of gradation on the performance of ballast aggregate;and a gradation evaluation method based on aggregate performance is proposed.The results show that the Logistic function accurately fits various gradation curves.Compared with the existing gradation parameters,the function provides higher determinacy.Six ballast samples with different gradations were compared using grey relational analysis.The result reveals that the ballast with smaller maximum particle size has better performance in porosity,axial stress,and transverse displacement.Reducing maximum nominal particle size while appropriately decreasing small-size particle proportion enhances ballast bed compactness,increases bearing capacity,and improves deformation resistance.关键词
道砟/级配参数/孔隙率/力学性能/灰色关联分析法Key words
Ballast/Gradation parameters/Porosity/Mechanical property/Grey relational analysis分类
交通工程引用本文复制引用
余文颖,徐旸,张景昱,赵一馨,郄录朝..级配对道砟集料性能影响的灰色系统分析[J].中国铁道科学,2025,46(3):32-41,10.基金项目
国家自然科学基金资助项目(52278467) （52278467）
