Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Seismic Response Evaluation of PSCI Girder Bridges Considering Stiffness Variation in Elastic Bearings

탄성받침의 강성 변동을 고려한 PSCI 거더 교량의 지진 응답 평가

  • Yoon, Hyejin (Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Cho, Chang-Beck (Department of Structural Engineering Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Kim, Young-Jin (Planning and Coordination Department, Korea Institute of Civil Engineering and Building Technology) ;
  • Kang, Jun Won (Department of Civil and Environmental Engineering, Hongik University)
  • 윤혜진 (한국건설기술연구원 구조연구본부) ;
  • 조창백 (한국건설기술연구원 구조연구본부) ;
  • 김영진 (한국건설기술연구원 기획조정본부) ;
  • 강준원 (홍익대학교 건설환경공학과)
  • Received : 2022.12.28
  • Accepted : 2023.06.01
  • Published : 2023.07.01
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Abstract

An elastic bearing must be strong against vertical loads and flexible against horizontal loads. However, due to the material characteristics of rubber, it may show variability due to the manufacturing process and environmental factors. If the value applied in the bridge design stage and the actual measured value have different values or if the performance during operation changes, the performance required in the design stage may not be achieved. In this paper, the seismic response of bridges was compared and analyzed by assuming a case where quality deviation occurs during construction compared to the design value for elastic bearings, which have not only always served as traditional bearings but also have had many applications in recent seismic reinforcement. The bearing's vertical stiffness and shear stiffness deviation were considered separately for the quality deviation. In order to investigate the seismic response, a time history analysis was performed using artificial seismic waves. The results confirmed that the change in the bearing's shear stiffness affects the natural period and response of the structure.

Keywords

Acknowledgement

본 논문은 국토교통부/국토교통과학기술진흥원의 지원(건설기술촉진사업, 과제번호 RS-2021-KA163620)으로 수행되었음.

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