黄土填料路基压实质量快速检测技术控制标准  

Technical control standard for rapid detection of compaction quality of loess filling roadbed

作　　者：陈龙 王刚强 杨敬礼 武昱欣 CHEN Long;WANG Gangqiang;YANG Jingli;WU Yuxin(Gansu Jiaojian Project Management Co.,Ltd.,Lanzhou 730000;Gansu Provincial Transportation Planning Survey and Design Institute Co.,Ltd.,Lanzhou 730000)

机构地区：[1]甘肃交建项目管理有限公司,甘肃兰州730000 [2]甘肃省交通规划勘察设计院有限公司,甘肃兰州730000

出　　处：《中国建材科技》2024年第6期102-106,共5页China Building Materials Science & Technology

基　　金：甘肃省交通运输厅科技项目(2024-08)。

摘　　要：快速精确检测路基压实度是确保公路路基黄土填料压实质量与规避路基路面病害及工程隐患的重要技术途径。本文以G309线祁家南山至汉家岔段改造项目为依托,通过现场试验建立特殊黄土地质动态弹性模量Evd值和压实度K值相关性模型,实现了黄土填料压实质量快速检测。进一步考虑含水率的作用对模型进行修正,探究含水率对相关性的影响。结果表明,线性回归模型更能准确表达Evd值和K值的相关性,相关性系数R^(2)值为0.8761,且含水率为12%时,基于E_(vd)值的快速检测法准确率最稳定。与灌砂法相比,快速检测法相对误差小于1的占比为86%,表现优秀。Rapid and accurate detection of roadbed compaction degree is an important technical way to ensure the compaction quality of loess fillers,and to avoid the diseases and hidden dangers of subgrade and pavement.Based on G309 line upgrading project(Qijiananshan-Hanjiacha),the correlation model between the dynamic elastic modulus Evd value and the compactness K value of the special loess is established through field tests,achieving rapid detection of loess filling compaction quality.The model is modified by considering the impact of moisture content,and the influence of different moisture content on the correlation is studied.The results show that the linear regression model can more accurately express the correlation between the dynamic elastic modulus E_(vd) value and the compactness K value,and its correlation coefficient R^(2)value is 0.8761.When the water content is 12%,the accuracy of the rapid detection method based on Evd value is the most stable.Compared with sand-filling method,the rate of relative error less than 1 is 86%,and the method performs well.

关 键 词：路基工程 黄土填料 动态弹性模量 压实质量 快速检测 

分 类 号：U416[交通运输工程—道路与铁道工程]