路基压实状态与碾压动土压力的关联性分析  

Correlation analysis between subgrade compaction state and rolling dynamic soil pressure

作　　者：张荣华 王育杰 董超 王新宇 蒋红光 姚占勇 Zhang Ronghua;Wang Yujie;Dong Chao;Wang Xinyu;Jiang Hongguang;Yao Zhanyong(Shandong Expressway Jiqing Middle Line Highway Co.,Ltd.,Weifang 261500,Shandong,China;School of Qilu Transportation,Shandong University,Jinan 250061,Shandong,China)

机构地区：[1]山东高速济青中线有限公司,山东潍坊261500 [2]山东大学齐鲁交通学院,山东济南250061

出　　处：《岩土工程技术》2025年第1期132-138,共7页Geotechnical Engineering Technique

摘　　要：路基压实状态与碾压动土压力密切相关,为此开展了土压力传感器室内标定试验。标定试验显示砂标系数与厂家标定系数相差65%以上,论证了根据传感器的实际工程状态选择相应介质进行标定试验的必要性。在此基础上明晰了标定系数与压实状态的关系,建立了标定系数–砂土介质压实度关系曲线,提出了标定系数与介质压实度关系的归一化方程。路基碾压土压力的实测数据显示,按实际介质标定系数修正后的实测值与Boussinesq解理论值的偏差更小,较厂家标定系数下的实测值平均降低29.4%。To ensure subgrade compaction quality,the correlation between compaction state and rolling dynamic soil pressure was investigated.An indoor calibration test of soil pressure sensors was conducted,revealing a difference of over 65%between the sand calibration coefficient and the manufacturer's coefficient.This emphasized the necessity of selecting the medium based on actual engineering conditions for calibration.The relationship between the calibration coefficient and compaction state was clarified,leading to the establishment of a calibration coefficient-sand compaction degree curve and a normalization equation.Field measurements show that correcting measured values using actual medium calibration coefficients reduces the deviation from the Boussinesq theoretical solution by an average of 29.4%,compared to using the manufacturer’s coefficients.

关 键 词：高速公路 路基压实 土压力传感器 标定系数 压实状态 

分 类 号：U416.1[交通运输工程—道路与铁道工程]