炭素繊維シート補強による鉄筋コンクリート造シェルの耐力

概要

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The main purpose of this study is to investigate, both experimentally and theoretically, the strength of concrete shells reinforced with carbon fiber sheets. The effects of shell thickness on shell strength were described in our previous study, therefore, both inner and outer molds were adopted in the casting of concrete shells to minimize the difference between the actual shell thickness and the designed thickness. A static point load was applied perpendicularly to the cylindrical shell specimens until the fracture state was obtained. Four kinds of regions reinforced with carbon fiber sheets, None, Top, Bottom, and Both shell surfaces, were investigated and compared with each other. A theoretical study by nonlinear finite element analysis, which included fluctuations in shell thickness, was also conducted. The strength of the concrete shell, with consideration of the influence of shell thickness, is discussed on the basis of the results of the nonlinear finite element analysis of the results of the fractural experiments.