The HRB400 steel bars were used as anchor rods for rock foundations.Through fatigue performance tests,the relationship between the fatigue life of HRB400 anchor rods and stress levels was established.Parameter estimation was carried out using the three-parameter Weibull distribution and Gumbel distribution models.The fatigue characteristics of HRB400 anchor rods under different failure probabilities were evaluated.This provided important experimental refer-ence for the design of fatigue performance of rock anchor rod foundations.
rock anchor foundationHRB400 anchor barsfatigue resistancemodel parameter analysisS-N curves
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