Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Seismic performance evaluation of fiber-reinforced prestressed concrete containments subject to earthquake ground motions

  • Xiaolan Pan (College of Civil Engineering, Taiyuan University of Technology) ;
  • Ye Sun (College of Civil Engineering, Taiyuan University of Technology) ;
  • Zhi Zheng (College of Civil Engineering, Taiyuan University of Technology) ;
  • Yuchen Zhai (College of Civil Engineering, Taiyuan University of Technology) ;
  • Lianpeng Zhang (State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University)
  • Received : 2023.05.05
  • Accepted : 2023.12.07
  • Published : 2024.05.25
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Abstract

Given the unpredictability of the occurrence of the earthquake and other potential disasters into consideration, the nuclear power plant may be confronted with beyond design-basis earthquake load in the future. The containment structure may be severely damaged under such severe earthquake loading, increasing the risk of containment concrete cracking and potential radioactive materials leaking. Moreover, initial damage caused by the earthquake may significantly alter the pressure performance of the containment under follow-up internal pressure. To compromise the dangers of beyond design-basis earthquake to the containment, an alternative of replacing the conventional concrete with fiber-reinforced concrete (FRC) to upgrade the seismic resistance capacity of the containment is attempted and thoroughly researched. In this study, the influence of various fiber types such as rigid fiber and mixed fiber is regarded to constitute fiber-reinforced PCCVs. The physical properties of traditional and fiber-reinforced PCCVs under earthquake ground motions are scientifically compared and identified by using traditional and proposed evaluation indices. The results indicate that both the traditional evaluation index (i.e. top displacement, stress, strain) and the proposed damage index are greatly reduced by the practice of fiber strengthening under earthquake ground motions.

Keywords

Acknowledgement

This investigation is supported by National Natural Science Foundation of China (No. 52208191, 52205064), S&T Program of Hebei (No. E2021210065), Shanxi Province Science Foundation (No. 202303021211079), and Shanxi Scholarship Council of China (No. 2023-085). These supports are greatly appreciated.

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