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讨论了路面瞬态振动信号分析处理技术．对振动信号反演分析可获得下部路基结构的剪切波速．建立了 ４种路基密度与瑞雷波速度的相关模型。研制了最佳模型自动选取软件，讨论了压实度建立的标准，从而实现了路基压实度的检测．对振动信号进行频谱分析，可获得路面脱空与否以及路基相对状况的信息．对于路面存在脱空或存在明显软弱路基，其主频值通常小于 ５０ ＨＺ．对路基加固处理后，其剪切波速将会提高，据此可通过对加固前后振动信号的测试，反清路基剪切波速值，实现对路基加固效果的评价．应用结果表明，该技术在上述几个方面可取得显著效果．
The pavement transient vibration signal analysis and processing technology is discussed. Back analysis of vibration signals can obtain the shear wave velocity of the subgrade structure. Four models of subgrade density and Rayleigh wave velocity are established. Developed the best automatic model selection software to discuss the establishment of compaction standards, so as to achieve subgrade compaction detection. Spectrum analysis of the vibration signal gives information on whether or not the pavement is empty and on the relative condition of the subgrade. For the road there is empty or there is obviously weak roadbed, its frequency is usually less than 50 HZ. After the subgrade is reinforced, the shear wave velocity will be improved. Based on this, the seismic signal before and after reinforcement can be tested and the shear wave velocity of the subgrade can be cleared, so as to evaluate the effect of subgrade reinforcement. The application results show that this technique can achieve remarkable results in the above aspects.