2025 Volume 81 Issue 16 Article ID: 24-16099
Dry masonry revetment is one of Japan's traditional revetment construction methods, and its value is being reevaluated in recent years. However, the lack of knowledge on the strength of dry masonry revetments and the lack of clear design criteria have prevented their adoption as a method of revetment construction. This study focused on the mechanism of backfill material suction out from the inside of revetments, which is one of the causes of damage to dry masonry revetments, and aimed to clarify how the mechanism is affected by different structures of drop-off structures. The results showed that backfill material is sucked out by the pressure difference in the longitudinal direction, and that the tendency of suction differs depending on the structure of the dropout structure, that suction is active near the point of maximum flow velocity near the revetment, and that the rock weir is a structure that is less likely to cause suction.
