Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Seismic Fragility Analysis of Reinforced Concrete Shear Walls Considering Material Deterioration

재료의 열화를 고려한 철근콘크리트 전단벽의 지진 취약도 분석

  • Myung Kue, Lee (Department of Civil and Environmental Engineering, Jeonju University) ;
  • Jang Ho, Park (Department of Civil Systems Engineering, Ajou University)
  • 이명규 (전주대학교 토목환경공학과) ;
  • 박장호 (아주대학교 건설시스템공학과)
  • Received : 2022.11.16
  • Accepted : 2022.12.01
  • Published : 2022.12.31
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Abstract

It is necessary to better understand the effect of age-related degradation on the performance of reinforced concrete shear walls in nuclear power plants in order to ensure their structural safety in the event of earthquakes. Therefore, this paper studies seismic fragility of the typical shear wall in nuclear power plants under earthquake excitation Reinforced concrete shear wall is composed of wall, horizontal and vertical flanges. Due to characteristics of its geometry, it is difficult to predict the ultimate behavior of shear wall under earthquake excitation. In this study, for more realistic numerical simulation, the Latin Hyper-Cube (LHC) simulation technique was used to generate uncertain variables for the material properties of concrete shear walls. The effects of crack, characteristics of inelastic behavior of concrete, and loss of cross section were considered in the nonlinear finite element analysis. The effects of aging-related deterioration were investigated on the performance of reinforced concrete shear walls through analysis of undegraded concrete shear walls and degraded concrete shear walls. The resulting seismic fragility curves present the change of performance of concrete shear wall due to age-related degradation.

Keywords

References

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