観測記録に基づく微動時・強風時・地震時の建築物の応答性状の違いの分析

概要

論文の詳細を見る
This paper discusses the differences of dynamic structural responses among ambient vibration, strong wind induced vibration and seismic induced vibration using observation data. The observed buildings are typical school buildings founded on piles which are a 5-story reinforced concrete building, a 7-story steel reinforced concrete building and a 10-story steel building. From the analysis of the vibration mode for each case, it becomes clear that the dominant vibration mode is different among three cases. In case of ambient vibration, the rocking and torsional foundation input motions contribute to the dynamic response. For strong wind induced vibration, the elastic translational and torsional deformations of superstructure become dominant. On the other hand, the translational foundation input motion is the most important for the seismic ground motion. The differences of vibration mode lead to the incorrect identified system parameters, especially on the damping properties.
2005-12-30