DYNAMIC SLOPE FAILURE ANALYSIS BASED ON X-FEM WITH ENRICH FREEDOM REPRESENTATION CLOSED IN ELEMENT

Abstract

There are examples of extended finite element method (X-FEM) studies of crack initiation and propagation in slopes under static and quasi-static conditions. However, there are no studies on dynamic slope failure caused by earthquakes. In this study, the dynamic initiation and propagation of tensile cracks in rock slopes are analyzed using the X-FEM with enrich freedom representation closed in element. In the dynamic analysis of a rock slope, differences in crack patterns due to different input accelerations were observed, which is caused by differences in vibration modes. This suggests that the possibility of quantitative evaluation including the difference of the failure process by the vibration mode, which are not fully considered in conventional slope stability analysis.