Journal of Urban Science (도시과학)

Urban Science Institute (인천대학교 도시과학연구원)
권호 표지
DOI QR코드

DOI QR Code

Performance Evaluation of Rcentering Smart Damper by Pre-Compression of Polyurethane

폴리우레탄 선압축량에 따른 자동복원 스마트 감쇠장치의 일축반복하중에 대한 성능 평가

  • 장희명 (한국과학기술기획평가원)
  • Published : 2022.12.15
Download PDF
⟨ Previous Next ⟩

Abstract

As the magnitude and frequency of earthquakes increase in Korea, interest in earthquake damage reduction technology has increased. Therefore, research on vibration damping devices that directly respond to seismic loads is being actively researched. After an earthquake, damage or destruction of the device occurs due to the yield of materials, and thus it takes considerable cost and time for restoration and replacement. To supplement the problems of the existing earthquake damage reduction technology, a study was conducted on the recentering smart damper that can be used continuously after an earthquake. In this study, the recentering smart damper that can be restored to its original shape after load removal was developed using superelastic shape memory alloy, pre-compressed polyurethane. General steel was commonly applied to verify the seismic performance of the superelastic shape memory alloy, and the performance of the smart damper was verified according to the amount of polyurethane pre-compressed

Keywords

References

  1. 국토안전관리원(https://www.kalis.or.kr)
  2. 김영찬, (2018), "자동복원이 가능한 댐퍼의 이력거동 특성 및 설계 최적화 연구", 박사학위논문
  3. 김형진, (2017), "국내 내진기술 현황 및 전망", 산은조사월보 제734호.
  4. Akira, W., (2006), "Nest step to select good structures by people", 4th International Conference on Earthquake Engineering, Taipei, Taiwan, October 12-13.
  5. Akira, W., Nobuyuki, M., (2012), "ADVANCED SEISMIC DESIGN OF BUILDINGS FOR THE RESILIENT CITY", 2nd International Conference on Archi-Cultural Translations through the Silk Road, Nishinomiya, Japan, July 14-16.
  6. Choi, E., Jeon, J., Seo, J., (2017), "Cyclic compressive behavior of polyurethane rubber springs for smart dampers", Smart Structures Systems, 20(6), pp. 739-757.
  7. Choi, E., Youn, H., Park, K., Jeon, J., (2017), "Vibration tests of precompressed rubber springs and a flag-shaped smart damper", Engineering Structures, 132, pp.372-382. https://doi.org/10.1016/j.engstruct.2016.11.050
  8. Helmut Krawinkler, (1992), "Guidelines for cyclic seismic testing of components of steel structures for buildings", Report No. ATC-24, Applied Technology Council, Redwood City, CA.
  9. Hu, J., Noh, M., Ahn, J., (2018), "Experimental Investigation on the Behavior of Bracing Damper Systems by Utilizing Metallic Yielding and Recentering Material Devices", Advances in Materials Science and Engineering, Vol. 2018, Article ID 2813058, 15 pages.
  10. Mirzai, N. M., Hu, J. W., (2019), "Pilot study for investigating the inelastic response of a new axial smart damper combined with friction devices", Steel and Composite Sturctures, 32(3), pp. 373-388.
  11. Mirzai, N., Cho, H., Hu, J., (2021), "Experimental study of new axial recentering dampers equipped with shape memory alloy plates, Structural Control Health Monitering, 28(3), e2680.
  12. Mirzai, N., Jeong, S., Hu, J., (2022), "Seismic collapse behavior of steel structures with a smart axial polyurethane friction damper" Journal of Building Engineering, 48, 103839.
  13. Speicher, M., DesRoches, R., Leon, R., (2011), "Experimental results of a NiTi shape memory alloy (SMA)-based recentering beam-column connection", Engineering Structures, 33, pp.2448-2457.
  14. Wada, K., Liu, Y., (2005), "Shape recovery of NiTi shape memory alloy under various pre-strain and constraint conditions", Smart Materials and Structures, 14, pp.273-286.