Seismic Fragility Curve and Damage Function in Earthquake Risk Analysis

Yoshikawa, Hiromichi; Ohtaki, Takeshi; Maeda, Y.; Nakamura, Toshiharu

doi:10.3151/coj1975.45.10_26

Cited by 4 publications

(4 citation statements)

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“…Based on previous literature, 22,24,25 the median value of the drift angle in the fragility curve where the majority of masonry infill walls failure occurred is 0.0014 rad with a logarithmic standard deviation of 0.417. According to the limit drift angle of masonry infill wall failure, the ductility ratio of the building structure can be determined, as described in Section 2.2.2.…”

Section: Methodsmentioning

confidence: 93%

Optimal structural restoration of historic building in Japan considering lifecycle seismic loss analysis

Takahashi

Katakai

Aoki

2020

Japan Architectural Review

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An economic performance evaluation scheme of historic buildings that consider the effect of structural renovation is proposed to provide information facilitating to the selection of reasonable renovation methods for preserving historic buildings. Ground motion scenarios, herein referred to as "lifecycle earthquake scenarios" in accordance with the previous research, were simulated to represent the annual maximum earthquake intensity data from the year of decision-making until the end year of the building's lifetime. Additionally, the structural characteristics of historic buildings with masonry infill walls as part of the structure were analyzed under the "lifecycle earthquake scenarios." Through a parametric analysis accounting for the change in structural characteristics and the repair costs in the lifecycle earthquake scenarios, the economic performance of historic buildings was calculated. Based on the results, the demand spectrum that satisfied the economic performance was obtained. This demand spectrum can provide the optimal structural renovation method to facilitate the building owner in making decisions regarding preservation.

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Section: Methodsmentioning

confidence: 93%

Optimal structural restoration of historic building in Japan considering lifecycle seismic loss analysis

Takahashi

Katakai

Aoki

2020

Japan Architectural Review

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“…The damage rate is obtained by estimating a fragility curve of the damage rate. The estimation of the fragility curves in this study is based on the concept of fragility curves, which target damage to structures 20) , and functional fragility curves, which target the decline in production capacity of enterprises 8), 9) .…”

Section: ) Methods Of Estimating Damage Rate and Damage Costmentioning

confidence: 99%

“…In Equation ( 2), the standard deviation of ln is constant regardless of the damage mode . Furthermore, the mean varies according to the damage mode , which is called multinomial reaction model 20) .…”

Section: ) Methods Of Estimating Damage Rate and Damage Costmentioning

confidence: 99%

Estimating Fragility Curves for Asset Damage in Business Sector Caused by a Flood Disaster: A Case of the Heavy Rain Event of July 2018 in Japan

2022

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This paper proposes fragility curves for asset damage based on questionnaire replies from companies that were affected by floods after the heavy rain event of July 2018 in Japan. Fragility curves are a probabilistic method for analyzing structural vulnerability and production facility of companies. Although a fragility curve is a basic model of disaster damage assumption, there has been no case of estimating the asset damage rate at the time of flood damage. In this study, the expected values of the damage rate and the damage cost obtained by the probability distribution of the asset damage rate are smaller than the estimation results in the Manual for Economic Evaluation of Flood Control Investments. These results may reflect the progress of the flood control and the Business Continuity Plan (BCP) of companies; thus, it is important to verify the validity of the evaluation model while continuously updating it.

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“…The occurrence probability of damage level k (Prob (k)) based on the total flux in the toxic substances that leak from any coastal landfill site can be calculated using the standard exceedance probability (Equations (6) and (7)). This probability must be expressed as a monetary value to facilitate comparison of risks; in this study, this conversion is performed using an endpoint modelling-based lifecycle impact assessment method [20], developed during 1998-2003…”

Section: Loss Functionmentioning

confidence: 99%

Evaluation of Maintenance Strategies Based on Leakage Risk Assessment on Side Impervious Walls at Coastal Landfill Sites

Inazumi¹,

Sekitani²,

Chae³

et al. 2017

MSA

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Asset management is a strategic decision-making aspect of social infrastructure that ensures safety by predicting long-term conditions and maximizing effectiveness under budgetary constraints. Predicting the deterioration of impervious walls is essential in the asset management of coastal landfill sites, particularly in the design of their maintenance and repair strategy. In this paper, a quantitative evaluation of the leakage of toxic substances in coastal landfill sites where deterioration of side impervious walls has decreased the water interception performance is reported. In addition, risk evaluation based on the asset management of the leakage is applied to determine an appropriate repair method. The strategy of repairing the walls when the concentration of the toxic substances leaking into the sea area exceeds the closure and abandonment of coastal landfill sites is demonstrated to be superior. Moreover, the strategy of repairing only the seaside side impervious wall is shown to be cost-effective.

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Seismic Fragility Curve and Damage Function in Earthquake Risk Analysis

Cited by 4 publications

References 0 publications

Optimal structural restoration of historic building in Japan considering lifecycle seismic loss analysis

Optimal structural restoration of historic building in Japan considering lifecycle seismic loss analysis

Estimating Fragility Curves for Asset Damage in Business Sector Caused by a Flood Disaster: A Case of the Heavy Rain Event of July 2018 in Japan

Evaluation of Maintenance Strategies Based on Leakage Risk Assessment on Side Impervious Walls at Coastal Landfill Sites

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