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A Study of the Dynamic Properties of Traditional Wooden Structure Based on Microtremor Measurement and Dead Load Measurement

전통목조건축물의 상시미동계측과 건물하중 계측을 이용한 동적특성 분석

  • Kim, Won-Jong (Safety and Disaster Prevention Division, Natural Research Institute of Cultural Heritage) ;
  • Kim, Hyung-Jun (Safety and Disaster Prevention Division, Natural Research Institute of Cultural Heritage) ;
  • Ha, Tae-Uk (Safety and Disaster Prevention Division, Natural Research Institute of Cultural Heritage) ;
  • Shin, Eun-Mi (Safety and Disaster Prevention Division, Natural Research Institute of Cultural Heritage)
  • 김원종 (국립문화재연구원 안전방재연구실) ;
  • 김형준 (국립문화재연구원 안전방재연구실) ;
  • 하태욱 (국립문화재연구원 안전방재연구실) ;
  • 신은미 (국립문화재연구원 안전방재연구실)
  • Received : 2022.08.10
  • Accepted : 2022.11.04
  • Published : 2022.12.30

Abstract

The purpose of this study is to analyze how the dead load of a traditional wooden structure according to the changes of environmental factors is related to dynamic properties of structure. For this purpose, microtremor measurements were performed once a month for one year to calculate the monthly modal natural frequency of the target structure. Dead load of structure is measured from load cell which is installed under each columns of structure on a hourly basis. The yearly change in dead load was estimated in consideration of the change in environmental factors such as temperature, relative humidity, rainfall and snowfall, and it compared with the dead load measured from the load cell. As a result, the measured dead load was found to be within the range of dead load changes. Each modal natural frequency was kept constant regardless of the measurement time. It was found that the change in dead load was not a major factor in changing each modal natural frequency.

Keywords

Acknowledgement

이 연구는 2022년도 국립문화재연구원 연구비 지원에 의한 「목조 건축문화재 내진성능 연구」 결과의 일부임. 과제번호: NRICH-2205-A64F-1

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