静索用炭素繊維複合材料ケーブルの繰返し軸荷重試験

概要

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Carbon Fiber Composite Cable (CFCC) is used for reinforcement member of bridges owing to its corrosion resistance. In these days, the applicability of CFCC for pendant ropes of cranes, whose name is CF pendant, is discussed. However, the failure mechanism of CF pendant has not been clarified. In this study, cyclic axial loading test of CF pendant was performed to detect the failure mechanism. The tensile strength of CF pendant used in this study was 200kN. Stress ratio was R=0.1. The number of cycles at failure and the displacement of CF pendant's both ends are obtained. The relationship between the cycles and the load range was similar to the SN diagram of steels. The minimum load range was less than 144kN. Therefore, the strength for cyclic loading depends the load range. Before its failure, the displacement was varied mostly 5% from the displacement of initial stage. For discussing the standard for disposal, the failure mechanism will be investigated in detail.