前損傷および修復の有無による鉄筋コンクリート造円筒殼の耐力と損傷形態変化

概要

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The main purpose of this study is to investigate, both experimentally and numerically, the. strength of predamaged and retrofitted reinforced concrete cylindrical shells. The strength of reinforced concrete cylindrical shells, predamaged by natural disasters, such as earthquakes, impact loads, wind and explosions, is difficult to estimate, and the strength of reinforced concrete cylindrical shells that were retrofitted on the basis of predamage to the shells has never been previously evaluated. In this study, the shells were artificially predamaged before evaluation by a loading experiment using a one-point concentrated load. The predamaged shells were retrofitted using noncontracted mortar and carbon-fiber sheets. A static point load was applied perpendicularly onto the predamaged and retrofitted cylindrical shell specimens. A numerical study by nonlinear FEM analysis including analysis of the fluctuations of the shell thickness was also conducted. The strength of the predamaged and retrofitted concrete shells in consideration of the reinforcement of the carbon-fiber sheets was discussed on the basis of the results of the nonlinear FEM analysis and the loading experiment.
東海大学の論文