2025 Volume 81 Issue 13 Article ID: 24-13504
We propose a method to modify the JMA measured seismic intensity to correspond to the actual earthquake damage, aiming to rapidly estimate the global intensity measure such as Modified Mercalli Intensity (MMI) from seismic records like the JMA seismic intensity. The rigid-plastic response is obtained from the seismic records and input into the existing procedure for calculating measured seismic intensity. Compared with the MMI obtained from the damage of the 2023 Kahramanmaraş earthquake in Turkey, the proposed method shows a good correlation. The best model parameter was obtained when the yield seismic coefficient of the rigid-plastic model was set to 0.4. In actual application in Japan and other regions in the world, it is necessary to select an appropriate yield seismic coefficient according to the buildings and structure types in the areas.
