A Study on the Evaluation of Soil Nonlinear Characteristics by Seismic Recorded Data at Downhole Array

Downhole 지진계측자료에 의한 지반의 비선형성 평가에 관한 연구

  • 장정범 (한국전력공사 전력연구원) ;
  • 서용표 (한국전력공사 전력연구원) ;
  • 이종림 (한국전력공사 전력연구원) ;
  • 이계희 (시설안전기술공단,)
  • Published : 2001.12.01

Abstract

The soil-structure interaction(SSI) analysis is essential to soil site where shear wave velocity is less than 1,050 m/sec and soil nonlinear characteristics for this kind of soil site have to be considered in SSI analysis. In order to consider soil nonlinear characteristics in the SSI analysis, simple and reliable soil nonlinear evaluation technique with seismic recorded data at downhole array is proposed in this study. The SSI analysis is carried out in order to prove the reliability of the proposed evaluation technique with Hualien large scale seismic test(HLSST) site in Taiwan. The analytical result are compared with Hualien earthquake recorded data and the analytical results with SHAKE program which is prevailed at present. As a result, the proposed evaluation technique shows a good agreement with both the Hualien earthquake recorded data and the analytical result with SHAKE program and the reliability and usefulness are confirmed.

Keywords

seismic recorded data;downhole array;soil nonlinear characteristics;shear wave velocity;SSI analysis

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