Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Seismic performance evaluation of reactor containment building considering effects of concrete material models and prestressing forces

  • Bidhek Thusa (Department of Civil and Environmental Engineering, Konkuk University) ;
  • Duy-Duan Nguyen (Department of Civil Engineering, Vinh University) ;
  • Md Samdani Azad (Department of Civil and Environmental Engineering, Konkuk University) ;
  • Tae-Hyung Lee (Department of Civil and Environmental Engineering, Konkuk University)
  • Received : 2022.10.19
  • Accepted : 2023.02.03
  • Published : 2023.05.25
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Abstract

The reactor containment building (RCB) in nuclear power plants (NPPs) plays an important role in protecting the reactor systems from external loads as well as preventing radioactive leaking. As we witnessed the nuclear disaster at Fukushima Daiichi (Japan) in 2011, the earthquake is one of the major threats to NPPs. The purpose of this study is to evaluate effects of concrete material models and presstressing forces on the seismic performance evaluation of RCB in NPPs. A typical RCB designed in Korea is employed for a case study. Detailed three-dimensional nonlinear finite element models of RCB are developed in ANSYS. A series of pushover analyses are then performed to obtain the pushover curves of RCB. Different capacity curves are compared to recognize the influence of different material models on the nonlinear behavior of RCB. Additionally, the effects of prestressing forces on the seismic performances of the structure are also investigated. Moreover, a set of damage states corresponding to damage evolutions of the structures is proposed in this study.

Keywords

Acknowledgement

This research is supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20201510100020).

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