点荷重を受ける複合炭素繊維シート補強コンクリート造円筒殻の耐力

概要

論文の詳細を見る
The main purpose of this study is to investigate, both experimentally and theoretically, the strength of concrete cylindrical shells with composite carbon fiber reinforcement under point load. In this study, composite carbon fiber reinforcement consists of carbon fiber chips and carbon fiber sheets. The chips and sheets could improve the tensile strength of a concrete shell in its internal and external regions, respectively. We investigated how the shell strength is influenced by the differences among the top, bottom and both surfaces reinforced with a carbon fiber sheet attached to a concrete shell mixed with carbon fiber chips. An experimental study was conducted on concrete shells in which static point load was applied perpendicular to the shell surface up to the final fracture state. A theoretical study was conducted by material and geometrical nonlinear finite element analyses including tension cutoff and tension stiffening effects. Nonlinear numerical calculations including fluctuations in the actual shell thickness were carried out. The strength of shells with composite carbon fiber reinforcement was discussed on the basis of the results of the fracture experiments and nonlinear analyses.
2006-03-31