Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Correlation of Seismic Loss Functions Based on Stories and Core Locations in Vertical-Irregular Structures

연층을 갖는 수직 비정형 건축물의 층수 및 코어 위치에 따른 지진손실함수 상관관계 분석

  • Hahn, SangJin (Department of Architecture and Architectural Engineering, Yonsei University) ;
  • Shim, JungEun (Department of Architecture and Architectural Engineering, Yonsei University) ;
  • Jeong, MinJae (Department of Architecture and Architectural Engineering, Yonsei University) ;
  • Cho, JaeHyun (Department of Architecture and Architectural Engineering, Yonsei University) ;
  • Kim, JunHee (Department of Architecture and Architectural Engineering, Yonsei University)
  • 한상진 (연세대학교 건축공학과) ;
  • 심정은 (연세대학교 건축공학과) ;
  • 정민재 (연세대학교 건축공학과) ;
  • 조재현 (연세대학교 건축공학과) ;
  • 김준희 (연세대학교 건축공학과)
  • Received : 2023.11.30
  • Accepted : 2024.03.26
  • Published : 2024.05.01
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Abstract

Piloti-type structures with vertical irregularity are vulnerable to earthquakes due to the soft structure of the first story. Structural characteristics of buildings can significantly affect the seismic loss function, calculated based on seismic fragility, and therefore need to be considered. This study investigated the effects of the number of stories and core locations on the seismic loss function of piloti-type buildings in Korea. Twelve analytical models were developed considering two variations: three stories (4-story, 5-story, and 6-story) and four core locations (center core, x-eccentric core, y-eccentric core, and xy-eccentric core). The interstory drift ratio and peak floor acceleration were assessed through incremental dynamic analysis using 44 earthquake records, and seismic fragility was derived. Seismic loss functions were calculated and compared using the derived seismic fragility and repair cost ratio of each component. The results indicate that the seismic loss function increases with more stories and when the core is eccentrically located in the piloti-type structure model. Therefore, the uncertainty due to the number of stories and core location should be considered when deriving the seismic loss function of piloti-type structures.

Keywords

Acknowledgement

본 논문은 2023년도 정부(교육과학기술부)와 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(Grant No. NRF-2021R1A2C2007064, RS-2023-00220019).

References

  1. MOLIT. Seismic design standards for buildings (KDS 41 17 00). Ministry of Land, Infrastructures, and Transport; c2022.
  2. FEMA. Multi-hazard loss estimation methodology, Hazus-Mh 2.1 technical manual-earthquake model. Federal Emergency Management Agency; c2013.
  3. Byeon JS. Economics on seismic rehabilitation of existing low-rise building in Korea. 15th World Conference on Earthquake Engineering; 2012 Sep 24-28; Lisbon, Portugal; Newyork: Curran Associates, Inc.; c2012.
  4. Kim T. Improvement of spectral displacement-based damage state criteria of existing low-rise, piloti-type buildings. Journal of the Earthquake Engineering Society of Korea. 2021 Sep;25(5):201-211. https://doi.org/10.5000/EESK.2021.25.5.201
  5. Hwang JH, Park KT, Park T. A study on damage state criteria based on capacity spectrum of piloti-type RC shear wall structures. Journal of the Korea Academia-Industrial cooperation Society. 2013 Oct;14(10):5199-5205. https://doi.org/10.5762/KAIS.2013.14.10.5199
  6. Sohn J, Choi I, Kim JH. Development of limit states for seismic fragility assessment of piloti-type structures verified with observed damage data. Engineering Structures. 2022 Jan;251:113562.
  7. NEMA. Development of seismic fragility functions of domestic building structures. National Emergency Management Agency; c2009.
  8. Kim SY, Kim KN, Yoon TH. Seismic performance of low-rise piloti RC buildings with eccentric core. Journal of the Korea Academia-Industrial cooperation Society. 2020 Oct;21(10):490-498. https://doi.org/10.5762/KAIS.2020.21.10.490
  9. Kim IH, Park IH, Choi Y. Seismic performance assessment of mid/low-rise RC pilotis building in terms of core locations. Journal of the Regional Association of Architectural Institute of Korea. 2019 Feb;21(1):117-124.
  10. Kim JR, Kim JY. Analyses of structural behaviors according to core location in the building with symmetric plan. Journal of the Korea Institute for Structural Maintenance and Inspection. 2020 Feb;24(1):116-124. https://doi.org/10.11112/JKSMI.2020.24.1.116
  11. Kim T, Chu Y, Kim SR, Bhandari D. Seismic behavior of domestic piloti-type buildings damaged by 2017 Pohang earthquake. Journal of the Earthquake Engineering Society of Korea. 2018 Apr;22(3):161-168. https://doi.org/10.5000/EESK.2018.22.3.161
  12. Kim J, Kim T. Seismic fragility function for existing low-rise piloti-type buildings reflecting damage from Pohang earthquake. Journal of the Earthquake Engineering Society of Korea. 2021 Nov;25(6):251-259. https://doi.org/10.5000/EESK.2021.25.6.251
  13. Joo C, Kim T. Seismic fragility function of low-rise piloti buildings designed according to KDS 41 17 00. Journal of the Earthquake Engineering Society of Korea. 2022 Mar;26(2):49-58. https://doi.org/10.5000/EESK.2022.26.2.049
  14. Gokdemir H, Ozbasaran H, Dogan M, Unluoglu E, Albayrak U. Effects of torsional irregularity to structures during earthquakes. Engineering Failure Analysis. 2013 Jul;35:713-717. https://doi.org/10.1016/j.engfailanal.2013.06.028
  15. KALIS. Guidelines for seismic performance evaluation of existing buildings. Korea Authority of Land and Infrastructure Safety; c2021.
  16. MOLIT. Design load for buildings (KDS 41 12 00). Ministry of Land, Infrastructure, and Transport; c2022.
  17. Braga F, Gigliotti R, Laterza M. Analytical stress-strain relationship for concrete confined by steel stirrups and/or FRP jackets. Journal of Structural Engineering. 2006 Sep;132(9):1402-1416. https://doi.org/10.1061/(ASCE)0733-9445(2006)132:9(1402)
  18. Filippou FC, Popov EP, Bertero VV. Effects of bond deterioration on hysteretic behavior of reinforced concrete joints. Report No. UCB/EERC-83/19. Earthquake Engineering Research Center; c1983.
  19. Kolozvari K, Orakcal K, Wallace JW. Modeling of cyclic shear-flexure interaction in reinforced concrete structural walls. I:Theory. Journal of Structural Engineering. 2014 Jul;141(5):04014135.
  20. FEMA. Prestandard and commentary for the seismic rehabilitation of buildings (FEMA 356). Federal Emergency Management Agency; c2000.
  21. MOLIT. Structural design guideline of piloti structure. Ministry of Land, Infrastructure, and Transport; c2018.
  22. FEMA. Quantification of building seismic performance factors (FEMA P695). Federal Emergency Management Agency; c2009.
  23. Shahbazi P, Mansour B, Ghafory-Ashtiany M, Kaeser M. Introducing loss transfer functions to model seismic financial loss: A case study of Iran. International Journal of Disaster Risk Reduction. 2020 Dec;51:101883.