STUDY ON REPRODUCIBILITY OF SIMULATION OF SEDIMENT TRANSPORT FOCUSING ON CONTINUOUS SLIDING FAILURE

Abstract

 In the April 2016 Kumamoto earthquake, a slope failure occurred around the Aso Ohashi Bridge, which is believed to have been a contributing factor to the bridge collapse. In many cases, bridges in wide-area networks such as expressways are constructed adjacent to slopes due to constraints such as alignment conditions, etc., and it is possible that slope failures may affect bridges. However, not much research has been conducted on the effects of slope failure on bridges, and analytical methods have not yet been fully established. The authors have conducted a replicated analysis of the slope around the Aso Bridge using the finite area method, but there are still problems in reproducing the behavior of secondary collapse. In this study, we focused on the continuous slip that is a characteristic feature of slope failure, and examined a method to evaluate the phenomenon in which a primary collapse causes a secondary collapse.