Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
권호 표지
DOI QR코드

DOI QR Code

Experimental Study on the Seismic Behavior Simulation of Modular Expansion Joint

모듈러 신축이음장치 지진거동 모사 실험적 연구

  • 이정우 (한국건설기술연구원 구조연구본부) ;
  • 최은석 (한국건설기술연구원 구조연구본부)
  • Received : 2022.08.08
  • Accepted : 2022.09.12
  • Published : 2022.10.30
Download PDF
⟨ Previous Next ⟩

Abstract

In order to evaluate the seismic performance of the modular expansion joint known for its large expansion allowance and remarkable durability, this study conducts seismic response analysis and seismic simulation test. The bridge selected for the seismic response analysis is a cable stayed bridge with main span length of 1,000m. Three artificial earthquake were generated with respect to the design response spectra of the Korean Standards (KS), AASHTO LRFD and Eurocode, and applied to the selected bridge. The seismic simulation tests reproduced the artificial earthquakes using dynamic hydraulic actuators in the longitudinal and transverse directions. The test results verified the durability and safety of the expansion joint in view of its seismic behavior since abnormal behavior or failure of the expansion joint was not observed when the artificial earthquake waves were applied in the longitudinal direction, transverse direction and both directions.

본 논문에서는 신축량이 크고 내구성이 우수한 모듈러 신축이음장치의 내진성능을 평가하기 위해 지진응답 거동해석과 지진거동모사실험을 수행하였다. 지진응답 거동해석은 한국(KS), 미국(AASHTO LRFD), 그리고 유럽(Eurocode)의 설계기준 응답스팩트럼을 적용하여 인공지진파를 생성하였다. 해석대상 교량은 경간 1,000m 사장교를 대상으로 각 기준에 대해 세가지의 인공지진파를 생성하였으며, 지진거동모사실험은 축방향과 횡방향의 동적 유압가력기를 사용하여 인공지진파를 재현하였다. 실험결과 축방향, 횡방향 및 양방향에 인공지진파를 재하하였을 때 신축이음의 거동 이상이나 파괴는 발생하지 않았으며, 신축이음장치의 지진거동에 대한 내구성 및 안전성을 확인하였다.

Keywords

Acknowledgement

본 연구는 국토교통부 국토교통기술촉진연구사업의 연구비지원(18CTAP-B132914-02) 및 대봉비엠텍(주)의 시험체 제공에 의해 수행되었으며 이에 감사드립니다.

References

  1. National Construction Institute (1982), Methods for expansion joint and bearing of bridges, National Construction Institute.
  2. Korean Standards Association (2001), KS F 4425 - Testing method for bridge expansion joint, Korean Standards Association .
  3. Kim, Y. J., Cho, C. B., Kwahk, I. J., Yoon, H. J., Kwark, J. W., and Lee, J. W. (2008), Design and performance evaluation of bridge expansion joint, Korea Bridge Design & Engineering Research Center.
  4. Korea Highway Corporation. (2004), A survey on the design specifications and improvement directions of finger joint, Korea Highway Corporation.
  5. Korea Road & Transportation Association. (2010), Highway bridge design code, Korea Road & Transportation Association .
  6. AASHTO. (2010), AASHTO LRFD Bridge Design Specifications, Washington DC, USA.
  7. David J. Lee (1994), Bridge Bearing and Expansion Joints Second edition, E&FN SPON, U.K.
  8. Dexter, R. J., Conner, R. J., and Kaczinski, M. R. (1997), Fatigue Design of Modular Bridge Expansion Joints, National Research Board, NCHRP Report 402.
  9. Dexter, R. J., Mutziger, M. J., and Osberg, C. B. (2002), Performance Testing for Modular Bridge Joint Systems, National Research Board, NCHRP Report 467.
  10. Eurocode. (2007), Bridge Bearing and Expansion Joints Second edition, E&FN SPON, U.K.
  11. Vanmarcke, E. H. and Gasparini, D. A. (1976), Simulated Earthquake Motions Compatible with Prescribed Response Spectra, M.I.T. Department of Civil Engineering Research Report R76-4, No. 527.