Repairing effect verification and damage reason investigation of a building with vibration control equipment damaged during great earthquake

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420559
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: Tohoku Institute of Technology
• Principal Investigator: Xue Songtao 東北工業大学, 工学部, 教授 (70236107)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 制振装置 / 損傷 / 補修方法 / ダンパー / モニタリングシステム

Outline of Final Research Achievements

Research has been focused on real earthquake records of a building with vibration control dampers damaged during the 2011 earthquake off the Pacific coast of Tohoku and having been repaired using isolator instead of damper. Damage mechanism of same damper was invested by damage experiment with sine wave input, in which it is clear that suitable design may keep damper effectiveness even receiving over-displacement during great earthquake. Real earthquake records and simulation results clearly indicate that the building capacity has been increased after repairing, which means using appropriate retrofit method will not only recover but also raise the building capacity. Structural health monitoring system has been renovated instead of old censer system and correctly worked while experiencing 2 great earthquakes, which also in turn clearly indicate the effectiveness of the repairing method.

Free Research Field

工学