基于连续振动压实度值的土石混填路基压实质量评价研究

Research on Evaluation of Compaction Quality of Soil-rock Mixed Subgrade Based on Continuous Vibration Compaction Value

利用振动型压实设备和混填路基动态作用原理,得出基于连续振动压实度值的混填路基压实质量评价方案,分析压实次数与对应的回弹模量、孔隙率以及沉降率间相关性。研究表明:连续振动压实度值与3个主要指标间线性相关性明显;连续振动压实度值评价方案有着离散程度低的优势,能更好地评价混填路基压实质量。

Using vibratory compaction equipment and the dynamic action principle of mixed subgrade,a compaction quality evaluation scheme of mixed subgrade based on continuous vibration compaction degree value is obtained.Analyze the correlation among the resilience modulus,porosity and settlement rate corresponding to the compaction times.The researches show that the linear correlation between the continuous vibration compaction degree value and the three main indicators is obvious;the continuous vibration compaction degree value evaluation scheme has the advantage of low dispersion and can better evaluate the compaction quality of the mixed subgrade.