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논문 기본 정보

자료유형
학술저널
저자정보
Sangwoo Park (Korea Military Academy) Jangwoon Beak (Korea Military Academy) Kukjoo Kim (Korea Military Academy) Young‑Jun Park (Korea Military Academy)
저널정보
한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.15 No.4
발행연도
2021.7
수록면
509 - 528 (20page)

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초록· 키워드

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With the increasing installation cases of underground explosive facilities (e.g., ammunition magazines, hydrogen tanks, etc.) in urban areas in recent years, the risk of internal explosions is also increasing. However, few studies on the measures for reducing damage by the ground vibration have been conducted except for maintaining safety distance. In this study, a method for attenuating the vibration propagated outward by installing a blast-proof panel was numerically and experimentally investigated. Two cubical reinforced concrete structures were manufactured according to the concrete strength and a blast-proof panel was installed on only one side of the structure. Then, acceleration sensors were installed on the external surface to evaluate the propagation of vibration outward depending on the installation of a blast-proof panel. Before a field experiment, a preliminary numerical simulation was performed. The results showed that the acceleration propagated outward could be effectively reduced by installing a blast-proof panel. Even though the performance of a blast-proof panel on vibration reduction was also investigated in the field experiment, significantly larger absolute accelerations were estimated due to the different experimental conditions. Finally, the vibration reduction effect of the blast-proof panel was numerically evaluated according to its thickness and the internal explosion load. A blast-proof panel more effectively reduced the acceleration propagated outward as its thickness increased and the explosion load decreased.

목차

Abstract
1. Highlights
2. Introduction
3. Experimental Conditions of Field Test
4. Preliminary Numerical Simulation
5. In Situ Explosion Experiment
6. Parametric Analysis Through Preliminary Numerical Model
7. Conclusion
References

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