【摘要】 通过疲劳寿命试验，获得了塔机角钢桁架结构节点的疲劳寿命数据，针对此类小样本容量试验的特点，采取了一种效率较高的统计方法，并且获得了该节点的Ｐ—Ｓ—Ｎ曲线，为进一步评估疲劳寿命打下了一定基础。更多还原

【Abstract】 The paper obtains fatigue life data of joint points for angle truss structure of tower crane through the test of fatigue life. According to the feature of this kind of small sample volume test. The writer uses a statistic method with high efficiency and gets P al S N curve of that joint POint. It lays the foundation for evaluating fatigue life further.更多还原