哈齐客专基床粗粒土填料击实特性研究  

Research on Compaction Character of Coarse-grained Soil Filler in Harbin-Qiqihar Railway Subgrade Bed

作　　者：岳祖润 杨志浩 吴镇 苗雷强 李沐原 陈佩哲 Yue Zurun;Yang Zhihao;Wu Zhen;Miao Leiqiang;Li Muyuan;Chen Peizhe(School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Jinan Design Institute,China Railway Engineering Consulting Group Co.,Ltd.,Jinan 250022,China;Hebei Building Research Technology Co.,Ltd.,Shijiazhuang 050021,China;Liangjiang International College,Chongqing University of Technology,Chongqing 401135,China)

机构地区：[1]石家庄铁道大学土木工程学院,河北石家庄050043 [2]中铁工程设计咨询集团有限公司济南设计院,山东济南250022 [3]河北建研科技有限公司,河北石家庄050021 [4]重庆理工大学两江国际学院,重庆401135

出　　处：《石家庄铁道大学学报（自然科学版）》2019年第2期56-59,共4页Journal of Shijiazhuang Tiedao University(Natural Science Edition)

基　　金：国家自然科学基金(51178281);河北省自然科学基金(E2015210006);中国铁路总公司科技研究开发计划课题(2017G002-W、2017G008-A);河北省博士研究生创新资助项目(CXZZBS2017134)

摘　　要：以哈齐客专基床粗颗粒填料为研究对象,采用表面振动击实仪研究了不同细颗粒含量条件下该填料的击实特性,探索了细颗粒含量对该粗粒土填料最大干密度及最优含水率的影响规律。结果表明,该填料的击实特征曲线中,细颗粒含量小于9%时表现为明显的双峰值规律;细颗粒含量大于9%时表现为单峰值规律。随细颗粒含量的增大,最大干密度呈现先增大后减小的规律,细颗粒含量为9%时取得最大值2.42g/cm^3;最优含水率随细粒土含量的增加而增大,但增长速率逐渐变小。Taking the coarse-grained filler of the Harbin-Qiqihar Passenger Dedicated Line’s subgrade bed as the research object,the surface vibrating compactor was used to study the compaction characteristics of the filler under different fine particle content conditions.The influence of fine particles content on the maximum dry density and the optimum moisture content of the coarse-grained soil was explored.The results show that in the compaction characteristic curve of this filler,when the content of fine particles is less than 9%,it shows a double-peak pattern,and when the content of fine particles is more than 9%,it shows a single peak pattern.With the increase of fine particles content,the maximum dry density shows the law of increasing at first and then decreasing.The maximum value 2.42 g/cm^3 is obtained when the fine particles content is 9%.The optimum moisture content increases with the increase of fine-grained soil content,but the growth rate gradually decreases.

关 键 词：基床填料 表面振动击实仪 细粒含量 最大干密度 

分 类 号：U215.2[交通运输工程—道路与铁道工程]