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http://dx.doi.org/10.15683/kosdi.2019.06.30.292

A Study on the Noise and Vibration Damping Performance of RC Hollow Core Slab  

Kim, Dong Baek (Department of Civil, Safety & Environment Engineering / Construction Engineering Research Institute, Hankyong National University)
Kim, In Bae (Department of Civil, Safety & Environment Engineering, Hankyong National University)
Kim, Jong Hoon (Department of Civil, Safety & Environment Engineering, Hankyong National University)
Lee, Jae Won (Department of Civil, Safety & Environment Engineering, Hankyong National University)
Publication Information
Journal of the Society of Disaster Information / v.15, no.2, 2019 , pp. 292-300 More about this Journal
Abstract
Purpose: To reduce the noise and vibration of reinforced concrete slab structures, the damping performance is to be performed experimentally after installing hollow core or filling it with liquid. Method: Using the hollow rate as an experimental variable, the damping ratio and stiffness of each test specimen at impact load are obtained to determine the difference between the damping ratio and stiffness of the numerical analysis. In addition, the damping effects are reviewed by comparing the difference in the damping ratio and stiffness of a test specimen filled with liquid 50% of the study. Results: Since the difference in resistance between a specimen with or without hollow core is 5%, it is judged that there is no structural problem, and the injection of liquid into the hollow core can increase the damping ratio, which can reduce noise or vibration. Conclusion: At less than 20% of hollow rate, there was little damping effect, and at 30%, damping effect was found. However, if liquid is injected into the hollow core of the specimen, damping rate is shown to increase, and the injection of liquid into the hollow part is believed to reduce noise or vibration.
Keywords
Noise and-Vibration; Damping-Performance; Damping Ratio; Difference of-Stress; Hollow Core Rate;
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Times Cited By KSCI : 1  (Citation Analysis)
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