Development of a new seismic isolation structure system with magnetic levitation of HTS bulk

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K18163
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Building structures/Materials
• Research Institution: Hachinohe National College of Technology
• Principal Investigator: SASAKI SHUHEI 八戸工業高等専門学校, その他部局等, 助教 (30707261)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 超電導 / 免震 / 磁気浮上

Outline of Final Research Achievements

In these days, large scale earthquake is frequency occurred in the world, and damages are caused by the earthquake. Therefore, it is necessary to take effective measures for prevent the earthquake damage. To reduce the earthquake damage, we have devised a magnetic levitation type superconducting seismic isolation device which composed by the HTS bulks and permanent magnets. In order to realize this device, we must improve the magnetic levitation force that contributes to the magnetic coupling between the HTS bulk and PM rail. However, the vertical vibration transmission to the seismic isolation object is increased with magnetic coupling between the HTS bulk and PM rail. Therefore, it is closely related to the magnetic levitation force improvement and vertical vibration transmission. We made an attempt at append a coil with superconducting wire to the HTS bulk. As a result, the magnetic levitation force slightly decreased, but it is succeed to reduce the vertical vibration transmission.

Free Research Field

超電導応用工学