Comparative experimental study on anti-loosening performance of ring groove rivet and ordinary bolt

In order to further study the feasibility of using ring-groove rivet connection instead of bolt connection in the middle node of transmission tower, the loosening test of 6.8-level ring-groove rivet, 8.8-level ring-groove rivet and bolts of the same specification under transverse cyclic load is carried out respectively. Combined with data analysis, the fitting of the double exponential curve model to the clamping force curve of the ring-groove rivet is explored. The results show that under the action of lateral vibration, the anti-loosening performance of the ring-groove rivet is better than that of the bolt due to its unique connection mode. The parameters in the double exponential function can reflect the influence of amplitude and initial preload on the anti-loosening performance of ring-groove rivets. Therefore, it is feasible to use ring slot rivet connection instead of bolt connection in the middle node of transmission tower, which will provide guarantee for the safety and stability of transmission tower.