修復された補強コンクリート造円筒殻の耐力,ひび割れ形態と振動特性

概要

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The main purpose of this study is to investigate, mainly experimentally, the strength and the relationships between damaged patterns and vibratory characteristics of retrofitted reinforced concrete cylindrical shells. The damage of shells could be encountered by natural disasters and long-term deterioration. However the strength and its vibratory characteristics of retrofitted reinforced concrete shells is difficult to estimate. The retrofit of concrete shells was applied with both grouting mortar and carbon fiber sheets. A loading experiment was applied on concrete shells under concentrated load. Before and after the loading experiment, vibratory tests by an impact hammer and an oscillatory machine were applied. The vibratory characteristics distilled from specimens before and after loading experiment were examined. The relationships between vibratory characteristics and mechanical behaviors of the retrofitted specimens before and after loading experiment were examined. The relationships between vibratory characteristics and mechanical behaviors of the retrofitted specimens before and after loading experiment were discussed on the basis of the results of the vibratory tests and the loading experiment.
2008-06-30