基于振动反应的土石混填路基压实质量评价方法

摘要

The roller vibration acceleration and compaction settling were tested to study the compaction characteristic of earth-rock subgrade and the vibration response of the roller.The adaptability of two typical continuous compaction indexes AA and CMV were analyzed.Results indicated that AA could be regarded as a real-time index for compaction quality evaluation of earth-rock subgrade.On this basis,the relative value of the indexes was used to control the degree of compaction and the varia-tion coefficient C was put forward to reflect its uniformity.%通过现场振动压实试验和原位压实沉降测试，分析了土石混填路基压实规律和压路机振动响应特征，研究了2种典型连续压实指标AA（直接法）和CMV（间接法）的适用性。结果表明， AA指标可作为土石混填路基连续压实指标，基于此，提出了以指标相对值为ΔAA土石混填路基压实质量评价标准，并以指标的变异系数C来反映其压实均匀性。