砂砾卵石土压实参数的试验研究  

Study Test on Compaction Parameters of Sand Gravel Cobble Soil

作　　者：陈海斌 郑世华 

机构地区：[1]中交上海航道勘察设计研究院有限公司,上海200120

出　　处：《路基工程》2012年第1期73-75,78,共4页Subgrade Engineering

摘　　要：砂砾卵石土作为一种特殊的路基填料,其工程特性、施工工艺、质量检验与控制方面与常规的土质路基甚至土石混合路基有较大的区别。采用不同的现场试验方法分别对某高速公路砂砾卵石土路基填料虚铺厚度为30,40 cm时,采用灌砂法、沉降差法、DCP贯入度法检测其压实度。结果表明:对于砂砾卵石土路基填料,当碾压遍数为4遍时,三种方法计算的压实度均满足设计要求。Sand gravel cobble soil as special subgrade filler has different engineering properties,construction processes,and quality control methods from conventional soil subgrade,even from rock mixture foundation.The different field tests such as sand cone method,differential settlement method and DCP method are used to measure the compactness when the virtual height of a highway sand gravel and cobble is 30 cm and 40 cm respectively.The result shows that for sand gravel cobble soil embankment,the compactness values calculated by these three methods meet the design requirement when rolling 4 times.

关 键 词：砂砾卵石土 压实度 灌砂法 沉降差法 DCP法 

分 类 号：U416.213[交通运输工程—道路与铁道工程]