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Title |
Estimation of Dynamic Characteristics Before and After Restoration of the Stone Cultural Heritage by Vibration Measurement
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Authors |
최재성(Jae-Sung Choi) ; 조철희(Cheol-Hee Cho) |
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DOI |
https://doi.org/10.11112/jksmi.2021.25.1.103 |
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Keywords |
석조문화재; 복원공사; 진동측정; 고유진동수; 동적 강성; 탄성계수 Stone Cultural Heritage; Restoration; Vibration Measurement; Natural Frequency; Global Stiffness; Modulus of Elasticity |
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Abstract |
Naju Seokdanggan, Treasure No. 49, was dismantled and reconstructed due to poor performance. During construction, the crack area was reinforced and the inclination was improved. It is necessary to analyze the stiffness changes before and after the reconstruction of these cultural properties, and to establish a database of related information. In addition, there is a need for research on a scientific non-destructive testing method capable of predicting or evaluating the reinforcing effect. In this study, a simple equation for estimating the overall stiffness of the structural system was derived from information on the elasticity coefficient and the natural frequency measured by vibration tests before and after reconstruction work, and the applicability of the equation was examined. If the stiffness of important cultural properties is regularly investigated by the suggested method, it is judged that it can be used as data to estimate the time when structural safety diagnosis is necessary or when repair or reinforcement is necessary.
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