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Proposal and Evaluation of Ground Response Spectrum Estimation Algorithm based on Seismic Observation Data

지진 관측데이터 기반 지반응답스펙트럼 추정 알고리즘 제안 및 평가

  • 안진희 (경남과학기술대학교, 토목공학과) ;
  • 정진우 (경남과학기술대학교, 전자공학과) ;
  • 홍유찬 (경남과학기술대학교, 토목공학과) ;
  • 박재봉 (한국시설안전공단 시설성능연구원) ;
  • 최형석 (국토교통연구인프라운영원)
  • Received : 2018.11.16
  • Accepted : 2019.04.05
  • Published : 2019.09.01

Abstract

In order to evaluate the earthquake damage level of small and medium - sized bridges without earthquake monitoring system, we proposed an algorithm for estimating the seismic force at the target bridge location using the ground acceleration data from the earthquake observatories near the structure. In general, response spectrum analysis, which is the most widely used dynamic analysis method to design and evaluate the structural system numerically is required a response spectrum to determine the dynamic loading. In this study, selection methods of the three closest observatories from the target structure and estimation method of ground response spectrum at arbitrary locations are developed. The proposed method can consider the distance and phase between the target bridge and the seismic station and from the relationship between the acceleration amplitudes and the location of the selected seismic station, the earthquake loading of the target bridge can be determined. The proposed algorithm is estimated to be more conservative than the response spectrum evaluated by actual earthquake data.

Keywords

Acceleration response spectrum;Seismic station;Earthquake;Structure evaluation

Acknowledgement

Supported by : 국토교통과학기술진흥원

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