3次元離散型有限要素モデルによる石造アーチ橋の静的・動的強度解析

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  • Static and dynamic strength analysis of stone arch bridges using a 3-Dimensional discrete finite element model
  • 3ジゲン リサンガタ ユウゲン ヨウソ モデル ニ ヨル セキゾウアーチバシ ノ セイテキ ・ ドウテキ キョウド カイセキ

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A stone arch bridge is one of the excellent heritages in the civil engineering. In order to maintain and to evaluate the seismic response of these bridges, this paper proposes a numerical analysis tool by using the finite element method as a discrete deformation analysis incorporated with the friction-contact analysis. We call this method “Discrete Finite Element Model” in this paper, and we implement this numerical analysis with commercial FE software “LS-DYNA”. The realistic FE meshes are generated, and material properties are acquired by material testing. Finally, efficiency and applicability of the 3-Dimensional FE model are demonstrated with numerical results for a static loading test and a dynamic response with one of the observed seismic waves at Kumamoto earthquake 2016.

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