Abstract
we have decided to conduct a pulsating fatigue test so that we can understand the fatigue property of the galvanized friction joints treated with phosphate.Moreover, it is observed during the fatigue test that the slip tends to be controlled after it has become integrated into the joint following the gradual slipping and interlocking through the blast treatment. Thus, we have conducted a slip test repeatedly so that we can both understand the fatigue property based on the above observation and investigate the effect of the slip caused by an earthquake, etc-, too.