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利用高周疲劳损伤理论及实验研究方法对塔式起重机起重臂进行了疲劳损伤寿命分析,并得出了塔式起重机起重臂焊缝允许的最大初始裂纹及裂纹的扩展寿命,为塔式起重机的疲劳设计提供了理论依据及判别方法。
Using the theory of high cycle fatigue damage and the experimental research method, fatigue life of tower crane boom is analyzed and the maximum initial crack length and crack propagation life of tower crane boom are obtained. Crane fatigue design provides a theoretical basis and determine the method.