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Evaluation of seismic fragility models for cut-and-cover railway tunnels
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개착식 철도 터널 구조물의 기존 지진취약도 모델 적합성 평가

논문 기본 정보

Type
Academic journal
Author
Yang Seunghoon (한양대학교 건설환경시스템공학과) Kwak Dongyoup (한양대학교)
Journal
한국터널지하공간학회 한국터널지하공간학회 논문집 한국터널지하공간학회 논문집 제24권 제1호 KCI Accredited Journals
Published
2022.1
Pages
1 - 13 (13page)
DOI
https://doi.org/10.9711/KTAJ.2022.24.1.001

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Evaluation of seismic fragility models for cut-and-cover railway tunnels
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A weighted linear combination of seismic fragility models previously developed for cut-and-cover railway tunnels was presented and the appropriateness of the combined model was evaluated. The seismic fragility function is expressed in the form of a cumulative probability function of the lognormal distribution based on the peak ground acceleration. The model uncertainty can be reduced by combining models independently developed. Equal weight is applied to four models. The new seismic fragility function was developed for each damage level by determining the median and standard deviation, which are model metrics. Comparing fragility curves developed for other bored tunnels, cut-and-cover tunnels for high-speed railway system have a similar level of fragility. We postulated that this is due to the high seismic design standard for high-speed railway tunnel.
#개착식 철도 터널 #선형 가중 조합 #경험적 방법 #피해발생확률 #지진취약도 함수 #Cut-and-cover railway tunnel #Weighted linear combination #Empirical method #Probability of damage occurrence #Seismic fragility function

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