Parameter Identification and Nonlinear Seismic Analysis of Soil-Structure Interaction System

지반-구조물 상호작용계의 강성계수추정 및 비선형지진해석

  • 윤정방 (한국과학기술원 토목공학과) ;
  • 최준성 (한국과학기술원 토목공학과) ;
  • 김재민 (미국 California-Irvine Post Doctoral 연구원) ;
  • 김문수 (한국원자력 안전기술원 선임연구)
  • Published : 1997.03.01

Abstract

This paper presents the result of an international cooperative research on the post-correlation analysis of forced vibration tests and the prediction of earthquake responses of a large-scale seismic test structure. The dynamic analysis is carried out using the axisymmetric finite element method incorporating in finite elements for the for field soil region. Through the post-correlation analysis, the properties of the soil layers are revised so that the best correlation in the responses may be obtained compared with the measured force vibration test data. Utilizing the revised soil properties as the initial linear values, the seismic responses are predicted for an earthquake using the equivalent linearlization technique. It has been found that the predicted responses by the equivalent nonlinear procedure are in excellent agreement with the observed responses, while those using the linear properties are fairly off from the measured results.

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