Research on response-control bearings for mitigating earthquake damages of steel roof gymnasia supported by RC frames

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H04075
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Takeuchi Toru 東京工業大学, 環境・社会理工学院, 教授 (80361757)
• Co-Investigator(Kenkyū-buntansha): 松井 良太 東京工業大学, 環境・社会理工学院, 助教 (00624397) ; 薛 松濤 東北工業大学, 工学部, 教授 (70236107) ; 熊谷 知彦 明治大学, 理工学部, 専任准教授 (70376945)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 学校体育館 / 耐震性能 / 防災拠点 / 避難所

Outline of Final Research Achievements

Numerous steel roof bearings in RC gymnasiums were damaged at the 2011 Tohoku Earthquake. These damages are considered to be mainly due to out-of-plane response of cantilevered RC walls; however, their mechanisms are not clear.
In this research, complicated response characteristics of these roof and RC walls are made clear. The real scale mock-up experiments of PTFE sliding bearings, friction damper bearings, and rubber sheet bearings are carried out, followed by the shaking table test for seismically isolated roofs. From these results, detailed construction methods for eliminating the damages without strengthening the roof, followed by proposing the evaluation methods. Also the steel roofs supported by seismic isolation bearings are investigated, followed by shaking table tests and response evaluations.

Free Research Field

建築構造・防災