2023 Volume 79 Issue 13 Article ID: 22-13043
Though in the past research, the effect of slip behavior by the difference in the displacement and the difference in the surface treatment is shown on the high strength bolt friction joint which is cyclic loaded by earthquakes, the effect by the difference in the loading velocity is not well understood. Therefore in this study, for the purpose of clarifying the effect, the monotonic and cyclic loading experiment was carried out under the same condition for test specimens; surface treatment as inorganic zinc-rich coating by setting loading velocity of 3 cases of 1 Hz, 0.05 Hz, 0.001 Hz as 1 cycle. As a result of the experiment, there was some degree of velocity dependence on slip load and slip coefficient, and when loading velocity was large, both slip load and slip and friction coefficient tended to increase. And, it was shown that the rate of decrease became small and the slip load converged in any case, when the loading over 10 cycles was continuously applied.
