铁路路基戈壁土填料振动压实影响因素分析  

Analysis of Vibration Compaction Influencing Factors for Gobi Soil Filling of Railway Subgrade

作　　者：拉有玉 杨斌[1,2] 赖国泉[3] 

机构地区：[1]兰新铁路新疆有限公司,新疆乌鲁木齐830011 [2]西南交通大学土木工程学院,四川成都610031 [3]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《兰州交通大学学报》2011年第3期18-22,共5页Journal of Lanzhou Jiaotong University

基　　金：铁道部科技研究开发计划项目(2009G020-C)

摘　　要：以新建兰新铁路第二双线路基试验段某工点戈壁土填料为研究对象,采用HDZDT-Ⅰ型调频振动台,进行振动压实测试最大干密度试验.通过所建立的灰色关联模型的分析表明:填料中粗颗粒含量P5对最大干密度值影响最大,振动设备的振动时间T、振动频率f次之,填料的含水率对最大干密度影响最小.现场填筑控制压实时,应重点控制填料的物理组成状况,压实机械的工况及工艺,以取得良好的压实效果.The maximum dry density test is performed for Gobi soil filling of the second double line of Lanzhou-Xinjiang Railway subgrade test section with HDZDT- I type FM vibration table production. Based on the grey relation analysis model,it shows that the content of coarse particles P5 is the greatest influencing factor on the maximum dry density, and the vibration time T and vibration frequency f take the second place,then the moisture content of filling is the weakest influence factor on the maximum dry density. In order to obtain good compaction effects, the physical composition condition of filling, compaction machine condition and compacting process should be focused on expressly.

关 键 词：戈壁土 粗粒土 振动压实试验 灰色关联度分析 

分 类 号：U214[交通运输工程—道路与铁道工程]