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Title |
Dynamic Characteristics of Hollow Core Slab by Vibraion Test and Modal Analysis
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DOI |
https://doi.org/10.11112/jksmi.2017.21.6.091 |
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Keywords |
가진실험계측 ; 중공 슬래브 ; 모드해석 ; 중공부분의 단면감소 효과가 고려된 해석모델 Measured data from free vibraion test ; Hollow core slab ; Modal analysis ; Analysis model ; The differences in section properties |
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Abstract |
The purpose of this study is to get a more precise frequency of hollow core slabs by comparing the observed values from the actual free vibration tests and the predicted values based on the analysis model. The actual free vibration tests were carried out in the construction field using Ω shaped hollow core slabs. Modal analysis is conducted based on the analysis model that takes into account the differences in section properties due to void parts of slab. The differences between the predicted values based on the modal analysis with analysis model and the measured data from the actual tests range from 2~7%. This study demonstrates that the analysis model that incorporates void parts of slab could be used in evaluating serviceability of hollow core slabs with reasonable accuracies.
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