Browse > Article
http://dx.doi.org/10.5000/EESK.2021.25.6.251

Seismic Fragility Function for Existing Low-Rise Piloti-Type Buildings Reflecting Damage From Pohang Earthquake  

Kim, Jinyoung (Department of Energy and Infra Integrated System, Kangwon National University)
Kim, Taewan (Department of Energy and Infra Integrated System, Kangwon National University)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.25, no.6, 2021 , pp. 251-259 More about this Journal
Abstract
Current seismic fragility functions for buildings were developed by defining damage state threshold based on story drift concerning foreign references and using the capacity spectrum method based on spectral displacement. In this study, insufficient details and dependence on the core location of piloti-type buildings were not reflected in the fragility function because it was developed before the Pohang earthquake. In order to develop an improved one for piloti-type buildings, several types of core were selected, damage state threshold was determined based on the capacity of structural members, and three-dimensional analyses were utilized. As a result, seismic fragility functions based on spectral acceleration were developed for various core locations and different shear strengths of the column stirrup. The fragility of piloti-type buildings significantly varied according to core location, an additional single wall, and whether the contribution of column stirrup was included or not. To estimate fragility more reasonably, it is necessary to prepare the parameters to reflect actual state well.
Keywords
Damage probability; Piloti-type building; Seismic fragility; Non-ductile column; Pohang earthquake;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Ministry of the Interior and Safety. Establishment outlines of the damage investigation and recovery plan for natural disaster. c2019.
2 Kim, T. A classification methodology of structural types of RC buildings for improving seismic fragility functions. Journal of the Earthquake Engineering Society of Korea. 2020 Nov;24(6):285-292.   DOI
3 Vamvatsikos D, Cornell CA. Incremental dynamic analysis, Earthquake Engineering and Structural Dynamics. 2002;31:491-514.   DOI
4 Seo HW, Kim BM, Park DH. Seismic fragility evaluation of inverted t-type wall with a backfill slope considering site conditions. Journal of Korean Society of Civil Engineers. 2021 Oct;41(5):533-541.
5 Ministry of Land, Infrastructure and Transport. Enforcement decree of the building act. c2021.
6 Ministry of Land, Infrastructure and Transport. A study on establishment of earthquake disaster prevention measures for piloti-type buildings, etc. c2018.
7 Korea Authority of Land and Infrastructure Safety. Seismic performance evaluation and rehabilitation guidelines of existing buildings. c2019.
8 Federal Emergency Management Agency. Hazus®-MH 2.1, Technical manual. Available from: https://www.fema.gov/plan/prevent/hazus
9 Federal Emergency Management Agency. FEMA 356, Prestandard and commentary for the seismic rehabilitation of buildings. c2000.
10 Computers and Structures, Inc. Perform-3D, Ver. 6.0.
11 Applied Technology Council. PEER/ATC-72-1, Modeling and acceptance criteria for seismic design and analysis of tall buildings. c2010.
12 PEER. Next generation attenuation relationships for Central & Eastern North-America (NGA-East). Pacific Earthquake Engineering Research Center. Available from: https://peer.berkeley.edu/research/ngaeast.
13 Ministry of Land, Infrastructure and Transport. Seismic design code for buildings (KDS 41 17 00). c2019.
14 National Emergency Management Agency. Development of fragility function of domestic building structures. c2009.
15 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.   DOI
16 Applied Technology Council. ATC-40, Seismic evaluation and retrofit of concrete buildings. c1996.
17 Ministry of Land, Infrastructure and Transport. Electronic architectural administration information system. Available from: https://cloud.eais.go.kr