<論文>衝撃荷重を受けるコンクリート造円筒殻の破壊形態

概要

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The main purpose of this paper is to investigate the cracking patterns of carbon fiber chip reinforced concrete circular cylindrical shells with openings and with low boundary stiffness under impact line load. In our previous study, the investigation for the nonlinear behavior on concrete cylindrical shells with low edge beam stiffness had been presented. However a 1ittle bit inadequate evaluation had been found on some concrete material constants in the nonlinear numerical calculations, and therefore in this paper the etffects by low edge beam stiffness were revaluated. In addition to these revaluated numerical models the effects by low edge arch stiffness on shell strength were newly investigated, both experimentally and numerically. The failure experimental study was conducted on small-scaled shell specimens, which were made not only from carbon fiber chip reinforced concrete but also from steel reinforced one for the mechanical behavior to be compared. These specimens were loaded onto the center line parallel to the circular directrix with impact line load. As for the numerical analysis the nonlinear numerical calculations was carried out by the transient dynamic response finite element method. The cracking patterns and the nonlinear behaviors were discussed based on the experimental and numerical results.
東海大学の論文
2002-09-30