摘要
排水材料渗水系数及路面极限排水强度受多种因素影响,为研究各影响因素对渗水系数及极限排水强度的关联紧密程度,采用回归分析方法与灰关联分析方法研究渗水系数与路面极限排水强度的变化规律。结果表明,混合料空隙率、连通空隙率、空隙直径均与渗水系数有良好的相关关系,而路面极限排水强度受渗水系数、路面厚度、横坡坡度的影响;通过灰关联法分析,材料内部空隙直径对渗水系数的影响最为显著,而路面极限排水强度影响因素关联性大小依次为渗水系数>路面厚度>横坡坡度。建议工程实践中提高路面排水性能应着重考虑增加路面厚度及材料渗水系数,而渗水系数的增大应考虑增大级配粗度。
The permeability coefficient and ultimate drainage strength of pavement are affected by many factors.In order to study the relationship between the factors on the permeability coefficient and the ultimate drainage strength,the changing law of the seepage coefficient and the ultimate drainage strength of the pavement is studied by regression analysis and grey correlation analysis.The results show that the void ratio,the connected void ratio and the diameter of the voids have good correlation with the permeability coefficient,while the ultimate drainage strength of the pavement is affected by the permeability coefficient,the pavement thickness and the slope slope;through the analysis of grey correlation method,the influence of the diameter of the internal void on the permeability coefficient is the most significant,while the correlation of the factors influencing the ultimate drainage strength of the pavement is the coefficient of water permeability>the thickness of the pavement>the slope slope.It is suggested that the increase of pavement thickness and material permeability coefficient should be considered to improve the drainage performance of pavement in engineering practice,while the increase of seepage coefficient should consider increasing the gradation roughness.
作者
段君邦
张云霞
彩雷洲
DUAN Jun-bang;ZHANG Yun-xia;CAI Lei-zhou(Guangxi Communications Investment Group Co.Ltd.,Nanning 530028,China;ZhongLuGaoKe(Beijing)Road Technology Co.Ltd,Beijing 100088,China)
出处
《公路》
北大核心
2022年第4期70-75,共6页
Highway
基金
国家重点开发项目,项目编号2016YEE0108200
交通运输部行业重点科技项目,项目编号2018-TG-003。
关键词
排水路面
渗水系数
极限排水强度
回归分析
灰关联
drainage pavement
permeability coefficient
limit drainage strength
regression analysis
grey correlation
