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在高速公路质量检测中 ,路堤土压实度是衡量土方路基重要的质量指标 ,提出了提高压实度计算精度的处理流程 ,应用τ-p变换提取面波 ,获取高信噪比的频散曲线 ,采用瞬态面波反演横波速度 ,提高横波速度计算精度 ,进而计算压实度。用上述方法对商开高速公路振冲压碾效果进行了无损检测 ,其结果与取样分析及开挖结果一致
In highway quality inspection, the compaction degree of embankment soil is an important quality index to measure earthwork embankment. The processing flow to improve the calculation precision of compaction degree is put forward. The surface wave is extracted by τ-p transform, and the dispersion of high signal-to-noise ratio Curve, using transient surface wave inversion of shear wave velocity, increase the accuracy of shear wave velocity calculation, and then calculate the degree of compaction. Non-destructive testing of the impact-blasted crushing effect of Shangkai Expressway by the above method was carried out, and the results were consistent with the results of sampling analysis and excavation