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지진 관측데이터 기반 지반응답스펙트럼 추정 알고리즘 제안 및 평가

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

  • 안진희 (경남과학기술대학교, 토목공학과) ;
  • 정진우 (경남과학기술대학교, 전자공학과) ;
  • 홍유찬 (경남과학기술대학교, 토목공학과) ;
  • 박재봉 (한국시설안전공단 시설성능연구원) ;
  • 최형석 (국토교통연구인프라운영원)
  • 투고 : 2018.11.16
  • 심사 : 2019.04.05
  • 발행 : 2019.09.01

초록

본 연구는 지진계측시스템이 설치되지 않은 중소형 교량의 지진손상 수준을 평가하기 위하여 대상 중소형 교량 인근에 위치한 지진관측소의 지진관측 데이터를 이용하여 대상 교량위치에서의 지반응답스펙트럼을 추정하기 위한 알고리즘을 제시하였다. 일반적으로 중소형 교량의 내진설계 및 성능평가는 동적해석법 중 응답스펙트럼해석법이 가장 널리 활용되고 있으므로 대상 중소형 교량에 대한 평가 지진력으로 지반응답스펙트럼을 적용할 수 있는 알고리즘을 제시하였으며, 제안된 알고리즘을 이용한 프로그램 알고리즘도 제안하고 제안된 알고리즘을 통하여 실제 지진계측데이터를 이용하여 특정 위치에서의 지반응답스펙트럼 추정 예를 나타내었다.

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.

키워드

참고문헌

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