黄土路基填料室内振动压实参数研究  

Study on Indoor Vibration Compaction Parameters of Loess Subgrade Filling

作　　者：胡慧聪 Hu Huicong(Macheng City Transportation and Logistics Development Center,Macheng,China)

机构地区：[1]麻城市交通物流事业发展中心,湖北麻城

出　　处：《科学技术创新》2024年第8期123-126,共4页Scientific and Technological Innovation

摘　　要：为更好的控制黄土填料路基的压实质量,研究了室内振动压实仪振动参数对素黄土和水泥改良黄土两种路基填料干密度的影响,明确了两种路基填料的最佳振动时间、振动频率和振动幅度。结果表明:随着振动时间和频率的增加,两种黄土路基填料的干密度先迅速增大后趋于稳定,素黄土和水泥改良黄土最佳振动时间分别为90 s和80 s,最佳振动频率分别为30 Hz和28 Hz;随着振动幅度的增大,两种填料的干密度均先增大后减小,振动幅度为1mm时,两种填料的干密度最大。In order to better control the compaction quality of loess filling subgrade,the influence of vibration parameters of indoor vibration compaction instrument on the dry density of plain loess and cement improved loess subgrade fillings was studied,and the optimal vibration time,vibration frequency and vibration amplitude of the two subgrade fillings were determined.The results show that with the increase of vibration time and frequency,the dry density of the two loess subgrade fillers increases rapidly and then tends to be stable.The optimum vibration time of plain loess and cement improved loess is 90 s and 80 s respectively,and the optimum vibration frequency is 30 Hz and 28 Hz respectively.With the increase of vibration amplitude,the dry density of the two fillers increases first and then decreases.When the vibration amplitude is 1 mm,the dry density of the two fillers is the largest.

关 键 词：路基工程 黄土填料 干密度 振动参数 水泥改良黄土 

分 类 号：U416[交通运输工程—道路与铁道工程]