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Title |
Blast-Resistant Design of Nonstructural Components Attached to Interior Surface of Reinforced Concrete Walls Exposed to Blast Load
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Authors |
김민서(Min-Seo Kim) ; 백선우(Seon-Woo Baek) ; 박상우(Sang-Woo Park) ; 김창수(Chang-Soo Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2026.38.3.301 |
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Keywords |
방폭설계; 비구조요소; RC 벽체; 단자유도해석; 유한요소해석 blast-resistant design; nonstructural component; RC wall; SDOF analysis; FEM analysis |
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Abstract |
This study proposes an analysis-based blast-resistant design framework for nonstructural components attached to the interior surface of reinforced concrete (RC) walls subjected to blast loading. The blast response of a blast-resistant RC wall was evaluated using both SDOF and FEM analyses, and the maximum acceleration transmitted to the attached nonstructural component was evaluated. Based on the resulting acceleration demand and the mechanical capacity of the nonstructural component, its structural response and potential modes were assessed. The results indicate that, even when the RC wall is designed to satisfy the required blast-resistant performance, the attached nonstructural component may lose its functionality and become detached, posing significant life-threatening hazards. These findings demonstrate that blast-resistant design of nonstructural components is required independently of the blast performance of structural elements. Accordingly, protection levels for nonstructural components were established based on allowable damage states, and corresponding blast-resistant design approaches for Protection Levels A, B and C were proposed.
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