2021 Volume 21 Issue 2 Pages 2_109-2_129
We believed that in order to accurately evaluate the level of damage to buildings in a large earthquake, there was a need to understand the input motion of each building, so we developed a damage meter for residential buildings. This paper involves an experiment using these damage meters set up in an area of Machida, Tokyo, with sloping ground and a lot of wooden residential buildings close together, in order to test the input motion. Specifically, using the input motion indices of seismic intensity, peak acceleration, and input acceleration trajectory, we tested the effects of a building's elevation, its direction, and the surface ground. As a result, we found that even if buildings were right next to each other, the values and forms of seismic intensity, peak acceleration, and input acceleration trajectory were different for each building and each earthquake, and we discovered their characteristics.