| 신뢰성 해석을 통한 고중량 피복블록의 안정성 검토 |
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이영찬1, 김도삼2, 이광호3 |
1국립한국해양대학교 석사
2국립한국해양대학교 토목공학과 명예교수
3국립한국해양대학교 토목공학과 교수 |
| Stability Assessment of High-Specific Gravity Armor Blocks Through Reliability Analysis |
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Young-Chan Lee1, Do-Sam Kim2, Kwang-Ho Lee3 |
1M.S., Department of Civil Engineering, National Korea Maritime and Ocean University, Busan 49112, Korea
2Professor Emeritus, Department of Civil Engineering, National Korea Maritime and Ocean University, Busan 49112, Korea
3Professor, Department of Civil Engineering, National Korea Maritime and Ocean University, Busan 49112, Korea |
Correspondence:
Kwang-Ho Lee, Tel: 051)410-4461,
Email: klee@kmou.ac.kr
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Received: 3 February 2025 • Revised: 26 February 2025 • Accepted: 27 February 2025 |
| Abstract |
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As the frequency of high-wave events increases, the use of high-specific gravity armor blocks to meet safety weight requirements is also increasing. However, despite meeting or exceeding the required safety weight for wave resistance, cases of damage, such as displacement and failure of these blocks, have been reported. This study conducted a reliability analysis, defining the required safety weight function—derived using a deterministic design method— as a performance function, focusing on cases that meet the required safety weight under high-wave conditions. This approach enabled a quantitative assessment of the safety of high-specific gravity armor blocks under both design and extreme wave conditions. Findings of this study suggest that high-specific gravity armor blocks demonstrate adequate stability against design and extreme waves across all levels (levels I, II, and III) if design loads and characteristic values of random variables in the performance function are accurately assessed. Nonetheless, given instances of armor block failure on-site, further studies on the applicability of existing safety coefficient calculation methods and the required safety weight function are recommended. |
| Key Words:
high-specific gravity armor blocks, required safety weight, reliability analysis, probability of failure, safety index |
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