2024 Volume 80 Issue 26 Article ID: 24-26003
We investigated the effect of earthquake-resistant housing on reducing the amount of disaster waste generation in prefectures, cities, wards, towns and villages in the Kansai region following the Nankai Trough mega-earthquake. For this purpose, we set and analyzed the current scenario based on the current seismic retrofitting rate, the seismic retrofitting plan scenario based on the target seismic retrofitting rate of the seismic retrofit promotion plan, and the complete seismic retrofitting scenario with a seismic retrofitting rate of 100%. Results show that, compared to the current scenario, the amounts of disaster waste reduction in the seismic retrofitting plan scenario and the complete seismic retrofitting scenario were estimated to be about 6.6 million tons and about 10.6 million tons, respectively. In the complete earthquake resistance scenario, Osaka prefecture had the largest amount of reduction at 3.4 million tons, followed by Wakayama prefecture at 2.1 million tons, and Hyogo prefecture at 1.9 million tons. The reason why disaster waste can be reduced by about 40-50% in Osaka and Wakayama prefectures is because they have many municipalities where seismic reinforcement has not progressed in areas where the expected seismic intensity is 6+.
