基于二值法研究干湿循环后路基土体裂隙发育

Research on the Development of Cracks in Subgrade Soil after Dry-Wet Cycle Based on Binary Method

本试验对不同干湿循环幅度后,路基土重塑试样进行了CT扫描。结果表明,通过CT图像二值化,得到了清晰直观的裂隙发育图像,并证明了干湿循环幅度越大,土体裂隙发育越明显,同时裂隙周围土体颗粒的松散化程度越高。

In this test,CT scans were carried out on samples of subgrade soil remodeling after different drying and wetting cycles.The results show that through the binarization of CT images,a clear and intuitive crack development image is obtained,and it is proved that the larger the dry-wet cycle amplitude,the more obvious the development of soil cracks,and the higher the degree of loosening of the soil particles around the cracks.