Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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An Evaluation on Seismic Design Criteria for Ground Motions Selection for Three-Dimensional Time History Analysis of Structures

3차원 시간이력해석을 위한 내진설계기준의 설계지진파 요구조건 타당성 평가

  • Ha, Seong Jin (Department of Architectural Engineering, Korea National University of Transportation)
  • 하성진 (한국교통대학교 건축공학과)
  • Received : 2020.03.19
  • Accepted : 2020.06.18
  • Published : 2020.07.30
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Abstract

To obtain reliable results for time history analysis of structure under earthquake loads, it is required to selecting proper input ground motions and constructing numerical model for the structure. Especially, for high-rise or irregular building, structural engineers should conduct three dimensional dynamic analysis. The purpose of this study was to evaluate of seismic design criteria for selecting ground motions to conducting three dimensional time history analysis of structures. For this purpose, 134 earthquake records which are composed of two horizontal ground motions, respectively, were collected. Then, several three dimensional time history analyses for 3, 9-story steel moment resisting structures with or without irregularities. Input ground motions were selected according to KDS 41 17 00 criteria for design ground motions using proposed method from a companion paper. The results show that one can predict seismic responses of three dimensional structure within an error of 20% using more than 10 ground motions. However, if less than 7 ground motions are used, the responses may be overestimated.

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Acknowledgement

이 연구는 한국교통대학교와 2020년도 한국연구재단 연구비 지원에 의한 결과의 일부임. 과제번호:NRF-2017R1C1B5076937

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