Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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A Study on the Acceleration Response Amplification Ratio of Buildings and Non-structural Components Considering Long-Period Ground Motions

장주기 지진동을 고려한 건축물 및 비구조요소의 가속도 응답 증폭비

  • Oh, Sang Hoon (Department of Architectural Engineering, Pusan National University) ;
  • Kim, Ju Chan (Department of Architectural Engineering, Pusan National University)
  • 오상훈 (부산대학교 건축공학과) ;
  • 김주찬 (부산대학교 건축공학과)
  • Received : 2022.08.30
  • Accepted : 2022.10.12
  • Published : 2023.01.01
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Abstract

Structures of high-rise buildings are less prone to earthquake damage. This is because the response acceleration of high-rise buildings appears to be small by generally occurring short-period ground motions. However, due to the increased construction volume of high-rise buildings and concerns about large earthquakes, long-period ground motions have begun to be recognized as a risk factor for high-rise buildings. Ground motion observed on each floor of the building is affected by the eigenmode of the building because the ground motion input to the building is amplified in the frequency range corresponding to the building's natural frequency. In addition, long-period components of ground motion are more easily transmitted to the floor or attached components of the building than short-period components. As such, high-rise buildings and non-structural components pose concerns about long-period ground motion. However, the criteria (ASCE 7-22) underestimate the acceleration response of buildings and non-structural components caused by long-period ground motion. Therefore, the characteristics of buildings' acceleration response amplification ratio and non-structural components were reviewed in this study through shake table tests considering long-period ground motions.

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Acknowledgement

이 과제는 부산대학교 기본연구지원사업(2년)에 의하여 연구되었음

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