Journal of Korean Association for Spatial Structures (한국공간구조학회논문집)

Korean Association for Spatial Structures (한국공간구조학회)
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Analysis on Dynamic Characteristics of an Observatory Tower by Using Mobile-phone Application

휴대폰 애플리케이션을 통한 타워전망대 동적특성 분석

  • 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)
  • 문상현 (서울과학기술대학교 건축과) ;
  • 윤성원 (서울과학기술대학교 건축학부)
  • Received : 2016.02.15
  • Accepted : 2016.05.04
  • Published : 2016.06.15
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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.

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References

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  1. The Evaluation of Effectiveness on Horizontal Ambient Vibration Measurement of Tall Building Using Wireless MEMS Sensor vol.18, pp.2, 2018, https://doi.org/10.9712/KASS.2018.18.2.51