地盤震動

[CS12-13] Investigation of building vibration characteristics and estimation of subsurface structure of evacuation facilities based on microtremor observation in Chizu Town, Tottori Prefecture, Japan

*野口 竜也¹、齊藤 一茂²、香川 敬生¹ (1. 鳥取大学工学部、2. 兵庫県庁)

Keywords:microtremor observation, subsurface structure, evacuation facilities, Chizu Town, Tottori Prefecture, Japan

In this study, we conducted microtremor observation at buildings and ground site of the evacuation facilities in Chizu town, Tottori Prefecture, Japan. As a result, predominante period of the evacuation facility buildings was 0.1 to 0.8 seconds, and some buildings seem to be severely deteriorated and have low earthquake resistance. A S-wave velocity of the Quaternary sediments layer in the evacuation facility site was 150m / s to 400m / s, and the layer thickness was 2 to 18m.