Shear connector of headed stud is often employed in steel-concrete hybrid structure. In order to evaluate mechanical property of stud shear connectors, the conventional push-out test method specified in the Japanese Standard is employed. However, in this push-out test, the alternating load can not be applied to the stud. From this point of view, we devise specimen to which the alternating load can be applied easily and carried out a series of static and fatigue tests under pulsating and alternating load conditions. As a result, it can be seen that there is not any difference between fatigue strength characteristics under both load conditions.
