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工业建筑 2009

基于累积损伤的在役钢结构吊车梁的疲劳可靠性评估

DOI: 10.13204/j.gyjz200908026, PP. 111-113

刘洪滨,幸坤涛

Keywords: 在役钢吊车梁结构,疲劳可靠度,累积损伤,剩余使用寿命

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Abstract:

从Miner累积损伤的定义出发，视累积损伤为随机过程，临界损伤为随机变量，考虑腐蚀情况下疲劳抗力的衰减，提出了在役钢结构吊车梁疲劳可靠度分析方法。对某在役钢结构吊车梁随时间变化的疲劳可靠性进行了评估，预测该钢结构吊车梁剩余疲劳寿命，为进一步维修决策提供依据。

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