瞬态面波法检测路基压实度的研究与探讨

The Study of Transient State Rayleigh Wave in Inspection of Degree of Compaction of Subgrade

提出利用瞬态瑞雷面波频散特性、瞬态瑞雷波传播速度与路基土的干密度的关系,进行公路路基土的压实度的无损检测.通过现场工地的瞬态瑞雷波与灌砂法同位测试结果的对比分析,建立了瞬态瑞雷波波速与压实度的回归经验公式,并分析了瑞雷波波速测试路基土压实度的优缺点及今后的研究重点.

A no-damage inspecting way to subgrade compression ration according to the property of frequency spread and the relations between the propagation velocity of Rayleigh Wave and the subgrade dry density. By comparing the results of impregnation sand, Rayleigh Wave and inspection at the same spot, a experienced expression about the relation between the propagation velocity and the degree of compaction was presented by curve fitting. The advantage and disadvantage of Rayleigh Wave which was used in subgrade inspecting and the emphasis of study in the future were analysed.