兰新高铁路基压实质量孔隙率检测标准探讨  

Discussion on Porosity Detection Standard for Subgrade Compaction Quality of Lanzhou-Xinjiang High-speed Railway

作　　者：赖国泉[1] 杨斌 杨有海[1] 

机构地区：[1]兰州交通大学土木工程学院,兰州730070 [2]兰新铁路新疆有限公司,乌鲁木齐830011

出　　处：《路基工程》2010年第6期34-36,共3页Subgrade Engineering

基　　金：铁道部科技研究开发计划(2009G020-C)

摘　　要：通过兰新高速铁路第二双线路基试验段工程孔隙率n检测值的分析认为,对于戈壁地区粗粒土的压实检测,现行孔隙率检测指标不合理,孔隙率标准可予减小。建议现场实测时控制标准:基床以下路堤孔隙率n≤28%,基床底层孔隙率n≤25%。Through analysis on detection value of porosity n in experimental section of the second double-track subgrade of Lanzhou-Xinjiang High-Speed Railway,it is considered that for compaction detection of coarse-grained soil in Gobi desert,the current porosity detection indicator is irrational,and porosity standard can be reduced.It is suggested that porosity n of the embankment below subgrade is not more than 28 % and that of the underlying subgrade is not more than 25 % as the control stardard in site measurement.

关 键 词：戈壁土 粗粒土 高速铁路路基 孔隙率n 压实系数K 

分 类 号：U416.12[交通运输工程—道路与铁道工程]