理論応用力学講演会 講演論文集
第64回理論応用力学講演会
セッションID: OS3-01-03
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OS3-1 極大地震時における表層地盤の強い非線形現象とその影響(1)
地震動記録に基づく簡易指標による表層地盤の非線形応答特性の評価
野口 科子
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会議録・要旨集 フリー

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We investigated the relationship between the characteristics of nonlinear soil response and site conditions at various seismic stations using a large number of strong motion records and a simple index of soil nonlinearity, DNL, which can be derived from seismic record only. We found that stations which show considerable amplification during weak motion tend to show the evidence of nonlinear soil response clearly in terms of DNL, while the stations with smaller soil amplification during weak motion did not show nonlinear soil response clearly even during strong motion. The relationship between soil parameters, averaged shear-wave velocity for soil layers for example, showed poor relationship to the nonlinear soil response characteristics at a station.

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