输电铁塔用6.8级M20热镀锌螺栓松动行为研究
Study on the Loosening Behavior of a 6.8 Grade M20 Hot Dip Galvanized Bolt for Transmission Towers
作者: 钱苗 , 李瑞 , 高义波 , 马恒 , 钱科 :浙江华电器材检测研究所(国家电力器材产品安全性能质量监督检验中心),浙江 杭州;
关键词: 螺栓; 防松性能; 初始预紧力; 温度; 振幅; 频率; Bolts; Anti-Loose Performance; Initial Pro-Load; Temperature; Amplitude; Frequency
摘要:Abstract: The loosening of fasteners commonly destroys the integrity and even lead to the collapse of the transmission tower. In this paper, the effects of four main factors, including pre-load, temperature, amplitude and vibration frequency, on the loosening behaviors of 6.8 grade M20 hot dip galvanized bolts were investigated as well as the mechanisms behind them. The results show that improving pre-load, reducing temperature and decrease vibration frequency can effectively restrict the loos-ening of the 6.8 grade M20 hot dip galvanized bolt. However, the conventional vibration frequency exhibits little effect on the loosening behavior of the hot dip galvanized bolts.
文章引用: 钱苗 , 李瑞 , 高义波 , 马恒 , 钱科 (2017) 输电铁塔用6.8级M20热镀锌螺栓松动行为研究。 输配电工程与技术, 6, 17-23. doi: 10.12677/TDET.2017.62003
参考文献
[1] 余虹云, 等. 电力线路器材应用与检测[M]. 北京: 中国电力出版社, 2007.
[2] 常星亚. 风载作用下输电塔螺栓连接松动特性研究[D]: [硕士学位论文]. 保定: 华北电力大学, 2015.
[3] 何先龙, 佘天莉, 徐兵, 李杰, 陈刚, 曹国福. 基于塔筒振动特性识别风机塔螺栓松动的研究[J]. 振动与冲击, 2016, 35(14): 112-118.
[4] 李维荣. 螺纹紧固件防松技术和试验方法研究[J]. 中国安全生产科学技术, 2009, 5(5): 20-21.
[5] GB-T 10431-2008紧固件横向振动试验方法[S]. 北京:中国标准出版社, 2008.
[6] 王文周, 等. 未知σ, t检验法剔除异常值最好[J]. 四川工业学院学报, 2000, 19(3): 84-86.
[7] Femando, S. (2005) Mechanisms and Prevention of Vibration Loosening in Bolted Joints. The Australian Journal of Mechanical Engineering, 2, 1-20.
[8] 侯世远. 螺纹连接松动机理研究[D]: [博士学位论文]. 北京: 北京理工大学, 2015.