【摘要】 运用波的绕射理论阐明了表面波遇到缺陷时透射脉冲频谱发生变化的机理。采用小波分析方法给出了定量评估缺陷损伤程度的指标。通过模型试验获得的结果,证实了表面波测量结合小波分析来检测钢管混凝土完整性的方法是有效、快捷和较精确的。更多还原

【Abstract】 The spectral variation mechanism of the transmitted pulse when surface wave meets a defect in steel tube concrete is explained by using the diffraction theory. The characteristic index for quantitatively evaluating the degree of defect damage is given through the method of wavelet analysis. Model tests are carried out,and the results of tests show that the method of surface wave detection and wavelet analysis for evaluating the integrity of steel tube concrete is effective,quick and more accurate.更多还原