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: OS3-02-02
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OS3-2 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(2)
不整形基盤で生成された表面波と実体波の干渉による表層地盤被害の甚大化・局所化
中井 健太郎野田 利弘浅岡 顕
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Most of the existing damage prediction methods not only do not substantially take account of the nonlinearity of the ground but also are based on one-dimensional vertical evaluations. Therefore, multi-dimensional effects due to an irregular stratigraphic and bedrock structure are not taken into consideration. In this paper, two-dimensional elasto-plastic effective stress analysis is carried out noticing the irregularity of the ground stratification. As a result, complex interference between the surface waves and body waves provides not only inhomogeneous deformation but also localized and extensive damage at the ground surface.

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