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http://dx.doi.org/10.9712/KASS.2016.16.2.047

Analysis on Dynamic Characteristics of an Observatory Tower by Using Mobile-phone Application  

Moon, Sang-Hyouen (Seoul National University of Science and Technology, School of Architecture)
Yoon, Sung-Won (Seoul National University of Science and Technology, School of Architecture)
Publication Information
Journal of Korean Association for Spatial Structures / v.16, no.2, 2016 , pp. 47-54 More about this Journal
Abstract
It is very important to calculate natural frequency of the observatory tower correctly because it is keenly affected by wind response vibration due to its large slenderness ratio, weight and small damping ratio. Additionally, suggestion equation of natural frequency being used in the design phase has considerable difference between actual measured value thereby making it inappropriate to be used in the serviceability design of the observatory tower. Therefore, this paper conducted an ambient vibration measuring on 10 observatory towers through mobile-phone application thereby calculating the natural frequency and comparing the result with the domestic and foreign standards and that of the eigen-value analysis. This paper suggested approximate equation of the natural frequency of the observatory tower; T=0.0266H. The square of the corelation coefficient is 0.940, which is high.
Keywords
Tower; Mobile-phone; Vibration measurement; Ambient vibration; Natural frequency;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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