摘要
为研究垂直振动压路机滚轮压实过程中垂直振动加速度与土壤参数之间的关系,根据二自由度"压路机-土壤"动力学模型搭建小型垂直振动压实试验台,分析了滚轮的垂直振动加速度与试验台刚度、阻尼之间的变化规律。结果表明:随着试验台刚度增加、阻尼减小,垂直振动加速度不断增加,说明垂直振动加速度随土壤密实程度增加而增加;二者呈正相关关系,可用于在线检测压实度。
In order to study the relationship between vertical vibration acceleration and soil parameters in the process of compaction by vertical vibration roller,a small test bench vertical vibration compaction was built based on a two-degree-of-freedom drum-soil dynamic model,and the variation law between vertical vibration acceleration of roller and stiffness and damping of the test bench was analyzed.The results show that the vertical vibration acceleration increases with the increase of the stiffness and the decrease of the damping of the test bench,which indicates that the vertical vibration acceleration increases with the increase of the soil compactness,and there is a positive correlation between them,which can be used to detect the compactness online.
引文
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