摘要:金属结构,特别是承受反复荷载作用的在役钢结构,通常存在不同程度的缺陷和疲劳损伤.在钢结构的损伤部位粘贴FRP对其疲劳损伤进行加固具有很多优势.对含中央疲劳损伤裂纹钢板粘贴CFRP加固,改善其剩余疲劳寿命进行了理论分析.基于线弹性断裂力学理论,采用有限元计算模型对裂纹前端的应力强度因子进行了计算.并根据Paris-Erdogan裂纹扩展模型,计算了加固前后疲劳损伤钢板的剩余疲劳寿命,验证了这一加固方法的有效性.
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