在外力作用下土体内部裂隙发育过程的CT研究

介绍了笔者设计制造的一台适用于CT连续观察的装置 ,并用这一装置对由多种材料组成的土体模型进行了垂直荷载、直剪和水平荷载试验 ,同时用CT对土体模型的不同剖面进行了连续拍摄以观察内部裂隙的发展过程。试验表明 ,CT可以用来研究一般情况下无法观察到的土体内部结构的变化过程 ,是岩土工程分析方面一个强有力的无损伤和无侵入的观察手段

A study on the development of failures inside soil under the external force using CT technique

In this paper, an apparatus that can be fitted into the chamber of a medical CT was built to conduct geotechnical tests. Loading and shearing experiments were performed on the soil models that were built with a variety of materials. CT images have been taken on different cross-sections inside the specimens to monitor the internal failure development in soil continuously. The results of direct shear, horizontal and vertical loading tests are presented and discussed. It has been demonstrated that CT is a powerful non destructive and non invasive tool for geotechnical engineering analyses.