本研究は 一次モード減衰比に着目した線形粘性ダンパー付多層アウトリガー構造の最適設計法を提案しました。本研究は超高層建物のパッシブ応答制御に関する研究シリーズの一つであり，骨組モデルを用いた厳密な減衰性能評価から我々が推奨する同構造の一次モード減衰比最大化の有効性を示し，さらにその最適設計のための具体的なツール群を整備しています。併せてAI(機械学習)を利用した最適設計ツールのデモアプリも公開しているので遊んでみていただければ幸いです。私の星付き論文です。論文はこちら
The damped outrigger system is in widespread use as a damping modification system for tall buildings that provides high additional damping in addition to the bending back effect against the core. However, while the enhanced seismic performance of damped outrigger systems was confirmed in previous studies all over the world, a general-purpose optimal design method focusing on modal damping ratios has not been established yet. This paper proposes an optimal damper design kit composed of a first mode damping ratio oriented design policy, simple equations of optimal damper-connection stiffness ratio to maximize first mode damping ratio, a machine learning model to estimate first mode natural period and damping ratio. The tenability of the first mode damping ratio-oriented design policy was confirmed by performing complex modal analyses on single to quad damped outrigger systems incorporating linear viscous dampers and assigning realistic stiffness values to the outrigger trusses. The simple design equations of optimal damper-connection stiffness ratio and the machine learning model for first mode characteristics were developed based on a large number of analytical results. The proposed optimal design kit has been made available as a web application-based design tool.