点荷重を受ける炭素繊維シート補強による鉄筋コンクリート造円筒殻の耐力

概要

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The main purpose of this study is to investigate, both experimentally and theoretically, the strength of concrete cylindrical shells with carbon fiber sheet reinforcement under point load. We investigated how to influence the shell strength by studying the differences among shells with either their top, bottom or both surfaces reinforced with a carbon fiber sheet. An experimental study was conducted on concrete shells reinforced with carbon fiber sheets on either their top, bottom or both surfaces. A static point load was applied perpendicularly on the shell surface until the final fracture state was obtained. A theoretical study comprising material and geometrical nonlinear finite element analyses including consideration of tension cutoff and tension stiffening effects was conducted. The concrete shell strength should be significantly influenced by the uniformity of the actual thickness, so nonlinear numerical calculations including fluctuations of the actual shell thickness were carried out. The strength of the shell with carbon fiber sheet reinforcement was discussed on the basis of the results of the fracture experiments and nonlinear analyses
東海大学の論文
2005-09-30