Seismic response control of low-rise light-weight structure by friction/viscous dampers with deformation distribution control mechanism and sliding base

2019 Fiscal Year Final Research Report

• Project/Area Number: 17H03346
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: Waseda University
• Principal Investigator: Soda Satsuya 早稲田大学, 理工学術院, 名誉教授 (70134351)
• Co-Investigator(Kenkyū-buntansha): 脇田 健裕 早稲田大学, 理工学術院, 客員主任研究員(研究院客員准教授) (10469025) ; 渡井 一樹 東京工業大学, 科学技術創成研究院, 特任助教 (30778189) ; 宮津 裕次 東京理科大学, 理工学部建築学科, 講師 (70547091)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Keywords: 制振構造 / 摩擦機構 / 損傷分散 / 滑り基礎構造 / 低層建築物 / 変形分布制御 / 高減衰 / ロバスト

Outline of Final Research Achievements

In this research, we’ve developed the novel structural system that reduces seismic response and maintains the function of buildings even when subjected to severe earthquake ground motions. In the proposed system, passive friction and viscous devices are highly integrated in a building to realize a stable and low cost seismic technology. Through a series of experimental and analytical studies, we’ve confirmed that the proposed system really works to supply high damping to the building, prevent damage concentration to a specific story, and reduce seismic response substantially. The achievement of this research is that we’ve successfully provided the concrete measure to upgrade the seismic performance of buildings with high reliability, which contributes to enhance urban disaster prevention system in the future.

Free Research Field

建築構造

Academic Significance and Societal Importance of the Research Achievements

開発した構造システムは、制振構造と免震構造の特徴を熟知したうえで、それらをシンプルかつ合理的に統合することで、ローコストでありながら安定性・ロバスト性を備えた高い耐震性能を実現している。入念かつ膨大な実験検討により策定されたディテイルそのものに学術的に貴重な知見が含まれており、また実用性を意識して構成された構造システムは高い普及力も備えており、地震安全性の向上に対する学術的・社会的意義は大きい。