Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Development of Seismic Fragility Framework for Piloti-Type Buildings Based on Structural Parameters

필로티 구조를 갖는 건축물의 구조적 변수 기반 지진취약도 추정 방법론

  • Hahn, SangJin (Department of Architecture and Architectural Engineering, Yonsei University) ;
  • Choi, Insub (Department of Architectural Engineering, Keimyung University) ;
  • Chang, HakJong (Department of Architecture and Architectural Engineering, Yonsei University) ;
  • Kim, JunHee (Department of Architecture and Architectural Engineering, Yonsei University)
  • 한상진 (연세대학교 건축공학과 ) ;
  • 최인섭 (계명대학교 건축공학과) ;
  • 장학종 (연세대학교 건축공학과) ;
  • 김준희 (연세대학교 건축공학과)
  • Received : 2024.11.20
  • Accepted : 2024.12.10
  • Published : 2025.01.01
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Abstract

Piloti-type buildings are widely constructed in urban areas of South Korea. Due to stiffness irregularities, piloti-type buildings are vulnerable to lateral loads such as earthquakes. Although seismic retrofitting is necessary for piloti-type buildings, many of these structures are privately owned, and the extensive number of buildings creates significant challenges in terms of cost and time for regional seismic performance evaluation. This study proposes a methodology for determining the seismic performance of multiple piloti-type buildings within a region by utilizing structural parameters. Information on piloti-type buildings is classified into public building data and exterior building data, which are integrated to define structural parameters for estimating the first natural period of the buildings. Linear regression analysis was performed to develop a regression equation correlating structural parameters with the natural period. Additionally, the natural period and structural parameters are used to perform another linear regression analysis to estimate the yield and ultimate points of the capacity curve. The capacity curves derived from the regression equations facilitate seismic performance evaluation based on structural parameters.

Keywords

Acknowledgement

본 논문은 2024년도 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(RS-2023-00220019).

References

  1. Kim T. Improvement of spectral displacement-based damage state criteria of existing low-rise, piloti-type buildings, J Earthq Eng Soc Korea. 2021 Sep;25(5):201-211. https://doi.org/10.5000/EESK.2021.25.5.201
  2. 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
  3. Sohn J. Choi I. Kim JH. Development of limit states for seismic fragility assessment of piloti-type structures verified with observed damage data. Eng Struct. 2022 Jan;251:113562. https://doi.org/10.1016/j.engstruct.2021.113562
  4. Hahn S, Shim J, Jeong M. Cho J, Kim J. Correlation of Seismic Loss Functions Based on Stories and Core Locations in Vertical-Irregular Structures. J Earthq Eng Soc Korea. 2024 May;28(3):149-158. https://doi.org/10.5000/EESK.2024.28.3.149
  5. FEMA, Multi-hazard loss estimation methodology, Hazus-Mh 2.1 technical manual-earthquake model. Federal Emergency Management Agency; c2013.
  6. MOLIT. Seismic building design code (KDS 41 17 00). Ministry of Land, Infrastructure, and Transport; c2022.
  7. FEMA. Prestandard and Commentary for the Seismic Rehabilitation of Buildings (FEMA 356). Federal Emergency Management Agency; c2000.
  8. MOLIT. Structural design guideline of piloti structure. Ministry of Land, Infrastructure, and Transport; c2018.