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本文介绍了港口起重机金属结构疲劳寿命估算的原理和方法,即现场采集数据,应用雨流法对数据进行后处理分析,然后获得测点部位疲劳寿命的P-S-N曲线,采用Miner线性累积损伤理论对金属结构的疲劳寿命进行估算。
This paper introduces the principle and method of estimating the fatigue life of the metal structure of port cranes by collecting the data on site and applying the rain flow method to post-process the data and then obtaining the PSN curve of the fatigue life at the measuring point. By using Miner’s linear cumulative damage theory, The fatigue life of the structure is estimated.