Journal of the Society of Disaster Information (한국재난정보학회 논문집)

The Korean Society of Disaster Information (한국재난정보학회)
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Seismic Fragility Analysis of Curved Bridge under High Frequency Earthquakes

고주파 지진에 의한 곡선 교량의 지진 취약도 분석

  • Jeon, Juntai (Department of Civil & Environmental Engineering, Inha Technical Coleage) ;
  • Ju, Bu-Seog (Department of Civil Engineering, Kyunghee University) ;
  • Son, Hoyoung (Department of Civil Engineering, Kyunghee University)
  • Received : 2020.11.17
  • Accepted : 2020.12.17
  • Published : 2020.12.31
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Abstract

Purpose: This is aimed to evaluate the seismic fragility of curved bridge structure with I-shape girder subjected to 12 high frequency ground motions based on Gyeongju earthquake. Method: The linear elastic finite element model of curved bridge with I-Shape cross section was constructed and them linear elastic time history analyses were performed using the 12 artificial ground motions. Result: It was found that displacement response(LS1, LS2) was failed after PGA 0.1g and the stress response also showed failure after PGA 0.2g. Conclusion: The curved bridge with I-shape girder was sensitive to high frequency earthquakes.

연구목적: I-Shape 거더를 갖는 곡선교량의 지진 안전성에 미치는 고주파 지진의 영향성을 분석하기 위해 지진 취약도 평가를 수행하였다. 연구방법: I-Shape 단면을 갖는 곡선교량의 선형탄성 유한요소 모델을 구축하고 고주파 영역의 인공지진파를 12개 생성하여 시간이력해석 및 지진 취약도 평가를 수행하였다. 연구결과:변위응답(LS1, LS2)에 대한 한계상태는 0.1g를 넘어서면서 파괴가 발생하였으며 거더의 응력응답 한계상태의 경우 0.2g를 넘어서면서 정해진 한계상태를 초과하는 것으로 나타났다. 결론: 현재 구축된 곡선교량 모델의 경우 고주파 지진에 민감하게 반응하는 것으로 판단된다.

Keywords

Acknowledgement

이 성과는 2018년도 정부(미래창조과학부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(NRF-2017R1C1B1002855).

References

  1. ABAQUS Ver. 2020, Dassault Systems.
  2. Abbasi, M., Adedini. J.M., Zakeri. B., Amiri G.G. (2016). "Seismic vulnerability assessment of a californian multi-frame curved concrete box girder viaduct using Fragility Curves." Structure and Infrastructure Engineering, Vol. 12, No. 12, pp. 1585-1601. https://doi.org/10.1080/15732479.2016.1152586
  3. Choi, I.K., Choun, Y.S., Seo, J.M., Lee, J.R. (2003a). "Consideration of high frequency ground motion effects on the seismic fragility of NPP components." International Symposium in Seismic Evaluation of Existing Nuclear Facilities, Vienna, Austria.
  4. Choi, I.K., Seo, J.M., Jeon, Y.S. (2003b). Evaluation of High Frequency Ground Motion Effects on the Seismic Capacity of Nuclear Power Plant Equipment. KAERI, Technocal Report KAERI/TR-2484/2003, Daejeon, Korea.
  5. Dutta, A. (1999). On Energy Based Seismic Analysis and Design of Highway Bridge. Ph.D. Thesis, State University of New York at Buffalo, New York, U.S.A.
  6. Feng, R., Wang, X., Yuan, W., Yu, J. (2018). "Impact of seismic excitation direction on the fragility analysis of horizontally curved concrete bridges." Vol. 2018, No. 16, pp. 4705-4733. https://doi.org/10.1007/s10518-018-0400-2
  7. Jeon, J.S., Mangalathu. S., Song. J., Desroches. R. (2019a). "Parameterized seismic fragility curves for curved multi-frame concrete box-girder bridges using bayesian parameter estimation." Journal of Earthquake Engineering, Vol. 23, No. 6, pp. 954-979. https://doi.org/10.1080/13632469.2017.1342291
  8. Jeon, J.T., Ju, B.S., Son, H.Y. (2018). "Seismics fragility analysis of curved beam with I-shape section." Journal of the Korea Society of Disaster Informantion, Vol. 14, No. 3, pp. 379-386.
  9. Jeon, J.T., Ju, B.S., Son, H.Y. (2019b). "Seismics fragility analysis of curved bridge structure by gider section shape." Journal of the Korea Society of Disaster Informantion, Vol. 15, No. 4, pp. 626-633.
  10. Ministry of Land, Transport and Maritime Affairs (2012). Korean highway bridge design code.
  11. Movaghati, S., Abdelnaby, A.E. (2016). "Advancements in fragility analysis using numerical calibration methods for a horizontally curved RC bridge." Engineering Structures, Vol. 125, pp. 236-243. https://doi.org/10.1016/j.engstruct.2016.07.017
  12. Shirazi, R.S., Pekcan. G., Itani. A. (2018). "Analytical fragility curves for a class of horizontally curved box-girder bridges." Journal of Earthquake Engineering, Vol. 22, No. 5, pp. 881-901. https://doi.org/10.1080/13632469.2016.1264325
  13. Tanaka, S., Kameda, H., Nojima, N., Shunsyke, O. (2000). "Evaluation of seismic fragility for highway transportation systems." 12th World Conference on Earthquake Engineering, Auckland, New Zealand, pp.1-6