粉砂质泥岩路基压实质量连续控制技术  

Continuous compaction quality control technology of silty mudstone subgrade

作　　者：韩进亮 孔二伟 单景松[2] 董信龙 杨冠宇 陈允禄 HAN Jinliang;KONG Erwei;SHAN Jingsong;DONG Xinlong;YANG Guanyu;CHEN Yunlu(Shandong Highway and Bridge Construction Group Co.,Ltd.,Jinan 250014,China;Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]山东省公路桥梁建设集团有限公司,济南250014 [2]山东科技大学,山东青岛266590

出　　处：《黑龙江工程学院学报》2024年第4期9-15,共7页Journal of Heilongjiang Institute of Technology

基　　金：山东省企业技术创新项目(202160101411)。

摘　　要：粉砂质泥岩颗粒强度差异较大,压实质量难以控制。依据结构动力学方法分析压路机振动轮与路基填筑体抗力响应之间的关系,借助现场试验段采集压实过程振动轮振动加速度信号,并进行快速傅里叶变换获取基频振幅和一次谐波振幅,据此得到连续振动压实值(CMV)。对比分析不同振动压实次数下压实度、沉降量和弯沉值与CMV值的相关性。结果表明,随着压实次数的增加,CMV值逐渐增加,与FWD动态弯沉值、压实度及累计沉降量间有良好相关性,据此提出了粉砂质泥岩路基压实的CMV控制值,研究结果有助于粉砂质泥岩路基的连续压实质量控制。The strength of silty mudstone particles varies greatly,and the compaction quality is difficult to control.Based on the structural dynamics method,the relationship between the vibratory wheel of the roller and the resistance response of the subgrade fill body is analyzed.The vibration acceleration signal of the vibratory wheel during the compaction process is collected by the field test section,and the fundamental frequency amplitude and the first harmonic amplitude are obtained by the fast Fourier transform,and the continuous vibration compaction value(CMV)is obtained.The correlations between compaction degree,settlement amount,bending value and CMV value under different vibration compaction times were compared and analyzed.The results show that the CMV value increases gradually with the increase of compaction times,and there is a good correlation between the CMV value and FWD dynamic bending value,compaction degree and accumulated settlement amount.Based on this,the CMV control value of silty mudstone embankment is proposed,and the research results are helpful to the continuous compaction quality control of silty mudstone embankment.

关 键 词：粉砂质泥岩路基 振动压实 CMV 连续压实质量监控 

分 类 号：U416.01[交通运输工程—道路与铁道工程]