横向振动作用下输电塔螺栓连接松动特性研究

MATEC Web of Conferences Pub Date : 2023-01-01 DOI:10.1051/matecconf/202338201032

Binrong Zhu, G. Huang, Zhigang Su, Bin Chen, Hailin Liao

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引用次数: 0

摘要

输电塔长期承受结冰导线驰动引起的交变负荷，其紧固螺栓容易松动或断裂，严重威胁着输电线路的安全运行。通过对输电塔常用的M20螺栓进行横向振动试验，改变其振动频率和振幅，研究螺栓接头预紧力的变化规律。结果表明:随着初始预紧力的增大，螺栓夹紧力的下降速度显著减小;M20螺栓夹紧力下降曲线采用shivakumar组模型拟合，与实际试验曲线吻合较好。

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Study on looseness characteristics of bolted joints of transmission towers under lateral vibration

transmission towers have been subjected to alternating loads caused by the galloping of iced conductors for a long time, and their fastening bolts are easy to loosen or break, which seriously threatens the safe operation of transmission lines. Through the transverse vibration test of M20 bolts commonly used in transmission towers, the vibration frequency and amplitude are changed, and the change law of the preload of bolt joints is studied. The results show that with the increase of the initial preload, the decline speed of bolt clamping force decreases significantly; The clamping force drop curve of M20 bolt is fitted by shivakumar crews model, which is very consistent with the actual test curve.

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来源期刊

MATEC Web of Conferences

自引率

0.00%

发文量

342

审稿时长

6 weeks

期刊介绍： MATEC Web of Conferences is an Open Access publication series dedicated to archiving conference proceedings dealing with all fundamental and applied research aspects related to Materials science, Engineering and Chemistry. All engineering disciplines are covered by the aims and scope of the journal: civil, naval, mechanical, chemical, and electrical engineering as well as nanotechnology and metrology. The journal concerns also all materials in regard to their physical-chemical characterization, implementation, resistance in their environment… Other subdisciples of chemistry, such as analytical chemistry, petrochemistry, organic chemistry…, and even pharmacology, are also welcome. MATEC Web of Conferences offers a wide range of services from the organization of the submission of conference proceedings to the worldwide dissemination of the conference papers. It provides an efficient archiving solution, ensuring maximum exposure and wide indexing of scientific conference proceedings. Proceedings are published under the scientific responsibility of the conference editors.