Seismic fragility analysis of reinforced concrete shear walls with high-strength reinforcing bar for nuclear power plants
This study investigates the seismic performance of reinforced concrete shear walls in nuclear power plants using high-strength reinforcing bar through finite element (FE) modeling and probabilistic fragility analysis. High-strength reinforcing bar is increasingly considered for nuclear structures to...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-12-01
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| Series: | Nuclear Engineering and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S173857332500395X |
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| author | Bu-Seog Ju Jang-Woon Baek Hong-Gun Park Hoyoung Son Sangwoo Lee |
| author_facet | Bu-Seog Ju Jang-Woon Baek Hong-Gun Park Hoyoung Son Sangwoo Lee |
| author_sort | Bu-Seog Ju |
| collection | DOAJ |
| description | This study investigates the seismic performance of reinforced concrete shear walls in nuclear power plants using high-strength reinforcing bar through finite element (FE) modeling and probabilistic fragility analysis. High-strength reinforcing bar is increasingly considered for nuclear structures to mitigate reinforcement congestion and improve constructability while maintaining structural integrity. Using experimental data, FE models were developed and validated to accurately capture shear and flexural failure behaviors. Seismic fragility curves were derived based on probabilistic evaluations under various ground motion intensities. The results indicate that shear walls reinforced with Grade 550 MPa and reduced reinforcement ratios exhibit equivalent seismic performance to identically detailed walls except for reinforcing bar grade (Grade 420 MPa). Additionally, a case study on a nuclear containment structure estimates a potential reduction of up to 325 tons of reinforcing bar. These findings highlight the feasibility of applying high-strength reinforcing bars in nuclear structures while ensuring seismic resilience and optimizing construction efficiency. |
| format | Article |
| id | doaj-art-6a4e11d17e9f49d082a18be0a18b805e |
| institution | Kabale University |
| issn | 1738-5733 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj-art-6a4e11d17e9f49d082a18be0a18b805e2025-08-20T03:40:41ZengElsevierNuclear Engineering and Technology1738-57332025-12-01571210382710.1016/j.net.2025.103827Seismic fragility analysis of reinforced concrete shear walls with high-strength reinforcing bar for nuclear power plantsBu-Seog Ju0Jang-Woon Baek1Hong-Gun Park2Hoyoung Son3Sangwoo Lee4Department of Civil Engineering, College of Engineering, Kyung Hee University, Gyeonggi-Do, Yongin-Si, Republic of KoreaDepartment of Architectural Engineering, College of Engineering, Kyung Hee University, Gyeonggi-Do, Yongin-Si, Republic of KoreaDepartment of Architecture & Architectural Engineering, College of Engineering, Seoul National University, Seoul, Republic of KoreaDepartment of Civil Engineering, College of Engineering, Kyung Hee University, Gyeonggi-Do, Yongin-Si, Republic of Korea; Corresponding author.Department of Civil Engineering, College of Engineering, Kyung Hee University, Gyeonggi-Do, Yongin-Si, Republic of Korea; Corresponding author.This study investigates the seismic performance of reinforced concrete shear walls in nuclear power plants using high-strength reinforcing bar through finite element (FE) modeling and probabilistic fragility analysis. High-strength reinforcing bar is increasingly considered for nuclear structures to mitigate reinforcement congestion and improve constructability while maintaining structural integrity. Using experimental data, FE models were developed and validated to accurately capture shear and flexural failure behaviors. Seismic fragility curves were derived based on probabilistic evaluations under various ground motion intensities. The results indicate that shear walls reinforced with Grade 550 MPa and reduced reinforcement ratios exhibit equivalent seismic performance to identically detailed walls except for reinforcing bar grade (Grade 420 MPa). Additionally, a case study on a nuclear containment structure estimates a potential reduction of up to 325 tons of reinforcing bar. These findings highlight the feasibility of applying high-strength reinforcing bars in nuclear structures while ensuring seismic resilience and optimizing construction efficiency.http://www.sciencedirect.com/science/article/pii/S173857332500395XReinforced concrete shear wallHigh-strength reinforcing barSeismic fragility analysisFinite element model |
| spellingShingle | Bu-Seog Ju Jang-Woon Baek Hong-Gun Park Hoyoung Son Sangwoo Lee Seismic fragility analysis of reinforced concrete shear walls with high-strength reinforcing bar for nuclear power plants Nuclear Engineering and Technology Reinforced concrete shear wall High-strength reinforcing bar Seismic fragility analysis Finite element model |
| title | Seismic fragility analysis of reinforced concrete shear walls with high-strength reinforcing bar for nuclear power plants |
| title_full | Seismic fragility analysis of reinforced concrete shear walls with high-strength reinforcing bar for nuclear power plants |
| title_fullStr | Seismic fragility analysis of reinforced concrete shear walls with high-strength reinforcing bar for nuclear power plants |
| title_full_unstemmed | Seismic fragility analysis of reinforced concrete shear walls with high-strength reinforcing bar for nuclear power plants |
| title_short | Seismic fragility analysis of reinforced concrete shear walls with high-strength reinforcing bar for nuclear power plants |
| title_sort | seismic fragility analysis of reinforced concrete shear walls with high strength reinforcing bar for nuclear power plants |
| topic | Reinforced concrete shear wall High-strength reinforcing bar Seismic fragility analysis Finite element model |
| url | http://www.sciencedirect.com/science/article/pii/S173857332500395X |
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