Natural Frequency of Tall Building Through Ambient Vibration Measurement

고층건물의 상시진동계측을 통한 고유진동수

  • 윤성원 (서울산업대학교 건축학부) ;
  • 주영규 (대우건설기술연구소)
  • Received : 2002.10.07
  • Accepted : 2003.04.04
  • Published : 2003.04.27

Abstract

Wind-induced motions, like acceleration for instance, often influence designs for high-rise buildings. As a consequence, correct assessment of natural frequency becomes important. The empirical expressions used to quantify this parameter at the design phase tend to yield values that are significantly different from each other. This paper is concerned with the natural periods of steel buildings. It describes the vibration measurement methods that were employed for testing buildings. This paper will also present reliable methods of assessing the natural period from ambient vibration tests. Data from measurements on 21 buildings in Seoul were provided while 21 buildings were tested by ambient vibration measurements to obtain the natural periods. While regression formulas of natural periods for steel-frarried tall buildings were suggested,the obtained formula was compared with the empirical expressions of structural standards and the Eigen-value analysis.

Acknowledgement

Supported by : 한국학술진흥재단

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