混凝土坝裂缝转异诊断方法研究

The research of concrete dam crack abnormal diagnosis

应用小波理论从裂缝的历史实测数据中提取时效变形,通过对时效变形的分析,判断了裂缝在混凝土坝运行过程中是否发生失稳转异以及失稳转异发生的时间,指出由于裂缝发生了失稳转异,裂缝也就从一种性态过渡到另一种性态,以最后一次转异之后的相对稳定的性态为研究对象,对裂缝的进一步研究具有重要的意义。

Based on the wavelet theory,the paper extracts the aging deformation of historical recorded data of concrete cracks and judges whether the concrete cracks turn abnormal and the relevant occurrence time during the operation of concrete dam. It is turned out that,under the function of instability of concrete cracks,the cracks transfer from one state to another. By taking the relatively stable state as the research object after the last abnormal variation would be of certain significance for the future research.