Study on high damping of High-rise Seismic Isolation Building by dynamic mass damper system

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K04360
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 23010:Building structures and materials-related
• Research Institution: Nihon University
• Principal Investigator: HATA Ippei 日本大学, 理工学部, 教授 (50548039)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 回転慣性質量 / 免震構造 / 複数モード制御 / リアルタイム・オンライン応答試験 / 粘弾性ダンパー / 超高層建物 / 地震応答 / 風応答

Outline of Final Research Achievements

This study proposes a damper system that enables the improvement of habitability and seismic performance in high-rise base-isolated buildings with multiple resonance periods. Existing technologies have been unable to achieve this due to performance and cost issues. However, the new system proposed in this study shows potential for practical application. This innovative technology is an M-CK system that combines rotational inertia mass and viscoelastic dampers in series.
Aiming for the practical application of the proposed system, its feasibility was verified through the establishment of a design method, response analysis, and vibration experiments. As a result, it shows that the system could realize high-rise base-isolated buildings with excellent habitability, seismic performance, and wind resistance.

Free Research Field

免震構造，制振構造

Academic Significance and Societal Importance of the Research Achievements

南海トラフ地震が懸念されている現在，その長周期・長時間地震動による都市部の超高層建物の安全性が懸念されている．超高層建物の耐震性は高いが居住性についてはあまり考慮されていない．また，避難時にエレベータ等の移動手段の停止も懸念されるため，より安全で安心な建物を実現しなければならない．そのために，本研究の成果は，安全で安心な建物の具現化が期待できるダンパーシステムであり，そのシステムを実用化できる段階となっている．