Study of the development of a vibration reduction foundation system that enhances business continuity in developing countries in ASEAN

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K04670
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 22020:Structure engineering and earthquake engineering-related
• Research Institution: Kanazawa Institute of Technology
• Principal Investigator: Yamagishi Kuniaki 金沢工業大学, 建築学部, 教授 (70553189)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 震動低減基礎 / ノンエンジニアド建築 / 球状砂 / 転がり摩擦係数 / 風圧力 / 最大滑動変位 / 簡易予測法

Outline of Final Research Achievements

For the purpose of reducing earthquake disasters in non-engineered buildings that are widely used in ASEAN, etc., we developed a vibration reduction foundation using rolling friction of spherical aggregates. As a result, the following things were found. (1) The coefficient of friction can be changed by the diameter of the spherical aggregate and the surface pressure on the foundation, (2) The wind speed at which sliding starts is predicted to prevent sliding during strong winds, which is the weak point of the foundation. (3) As a result of seismic simulation using an analytical model of a non-engineered building, it was possible to reduce the stress occurred in the outer wall by applying this foundation. From the above results, the feasibility of the vibration reduction foundation has increased, and we were able to get one step closer to the application of this foundation.

Free Research Field

耐震工学

Academic Significance and Societal Importance of the Research Achievements

摩擦係数を制御できる機構を発見できたことは極めて大きな学術的意義がある。摩擦力の制御は一般的に、摩擦材料に与える軸力を調整して行われる。しかし、基礎の滑動を利用する本機構において、軸力を変化させることは困難であるため、摩擦係数を制御する必要がある。摩擦係数の調整は一般的に材料の選択することで行われる。しかし、本機構は適切な摩擦係数を連続的に定めることができることが意義深い。本機構の適用により、震災レベルを顕著に低下させるだけではなく、その建築物を利用して事業継続や生活継続を高めることができるため、社会的損失を大幅に縮減することが可能になるため、社会的意義は極めて大きい。