ABSTRACT
Old-time stone walls are important cultural assets in Japan. There are many cases of large deformation or collapse of stone walls caused by earthquakes in the past. In order to maintain the seismic stability of stone wall, good repair of large deformed wall is an essential project. In the repair, it is a big issue whether the reinforcement of wall is employed or not. If reinforcement is not applied, a risk remains that the stone wall deforms largely again when encountering a big earthquake. If reinforcement is applied, it is required how to enhance the seismic resistance by the reinforcement. To examine these issues, we carry out a numerical analysis of stone wall by the discontinuous deformation analysis (DDA). In the analysis, a large deformed stone wall is reproduced, and the material parameters for analysis are determined. Based on the results, the seismic stability of the stone wall is examined for the case of employing reinforcement by soil improvement.
