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通过理论分析、有限元软件模拟以及试验验证来研究初始缺陷对碳纤维增强复合材料(Carbon FiberReinforced Plastics,CFRP)加固混凝土圆柱的力学性能和破坏形态影响。从宏微观角度定性分析初始缺陷对加固混凝土柱力学性能的影响;通过数值模拟与实验结果的对比,分析了轴压和偏压作用下带有初始缺陷的CFRP加固混凝土柱力学性能;研究了包裹层数、截面尺寸因素影响下的临界缺陷值的变化规律,论证了初始缺陷尺寸的改变对破坏形式的影响。
Through the theoretical analysis, finite element software simulation and experimental verification, the effect of initial defects on the mechanical properties and failure morphology of CFRP reinforced concrete columns was investigated. The effect of initial defects on the mechanical properties of reinforced concrete columns was qualitatively analyzed from the macro and micro perspectives. The mechanical properties of CFRP reinforced concrete columns with initial defects under axial compression and bias were analyzed by numerical simulation and experimental results. Layer number and cross-sectional dimension, the influence of the change of the initial defect size on the failure mode is demonstrated.