Investigation of the failure mechanism of the stone wall of Sendai castle using a new style of Swedish Weight Sounding testing apparatus

Abstract

We investigated the failure mechanism of stone wall of Sendai castle. We mainly used a new type of Swedish Weight Sounding testing apparatus in order to evaluate the inner layer structure of ground behind of the stone wall. As a result, the failure of the stone wall seemed to occur since the failed part of the stone wall was constructed on relatively deep embankment. On the other hand, the non-failed part of the stone wall was set on more steady ground. We also used a three dimensional laser scanner to evaluate the total profile of the stone wall itself, side strip and road surface in front of the stone wall as most as correctly. We could grasp the current total profile of stone wall correctly and will be able to use the data for the deformation monitoring in future.