Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Shaking Table Tests on the Seismic Damping-Isolation Unit Composed of a Spring and Vibration-Proof Rubbers for Improving a Seismic Performance in Ceiling Structures

천장 달대구조의 내진향상을 위한 스프링과 방진고무가 융합된 제진장치의 진동대 실험

  • Won, Eun-Bee (Dept. of Architectural Engineering, Kyonggi University) ;
  • Mun, Ju-Hyun (Dept. of Architectural Engineering, Kyonggi University) ;
  • Yang, Keun-Hyeok (Dept. of Architectural Engineering, Kyonggi University)
  • 원은비 (경기대 일반대학원 건축공학과) ;
  • 문주현 (경기대 스마트시티공학부 건축공학전공) ;
  • 양근혁 (경기대 스마트시티공학부 건축공학전공)
  • Received : 2022.10.25
  • Accepted : 2022.12.06
  • Published : 2023.01.30
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Abstract

This study examined the dynamic properties of a seismic damping-isolation SDI unit developed to enhance the seismic capacity of suspended ceiling structures. The developed SDI unit consisted of springs, vibration-proof rubber and bolts; a prestress force was introduced to improve the damping capacity of each material. The main variables involved whether or not the bolt introduced prestress force and included the number of layers of vibration-proof rubber. As a result of a shaking table test, the response acceleration, relative displacement, and amplification coefficients of SDI unit decreased 55.68%, 49.26%, and 56.89%, respectively compared to general hangar bolts, while the damping ratio increased by about 1.47 times. Based on these experimental results, for the SDI unit, the magnitude of the prestress force of 0.1 in the bolt and the vibration-proof rubber laminated in two are recommended.

Keywords

Acknowledgement

본 연구는 국토교통부/국토교통과학기술진흥원의 국토교통기술촉진연구사업의 연구비 지원으로 수행되었음. 과제번호: 22CTAP-C164373-02

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