Field Measurements and Analyses of Curved Surfaces of Tokugawa-Osaka Castle Masonry Walls

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  • 徳川大坂城石垣の曲面構造の実測と解析
  • トクガワ オオサカジョウ イシガキ ノ キョクメン コウゾウ ノ ジッソク ト カイセキ

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The Japanese castle masonry wall (hereafter simply "wall"), constructed from the late 16th century to middle of the 17th century, is appreciated as one of the world's finest and most outstanding example of construction. The walls are meted for their mechanical rational structure, especially the two-dimensional curved surfaces (hereafter referred to as hiranosuki) found on the three-dimensional structures. Regarding hiranosuki, further study is needed to clarify the technique of attaching them to the wall during reconstruction. In accordance with this viewpoint, this paper presents field measurements of the hiranosuki of Tokugawa-Osaka Castle walls. Next, the mechanical effects of hiranosuki is discussed, based on the analytical results of the field measurement data and three-dimensional FEM analyses.

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