Abstract
Fatigue cracks of steel structural members applied by overload, repeated load occur. As a countermeasure, there are some crack repair methods such as Reinforcing plate method, Weld repair method, Stop-Hole method, and Mechanical repair method, and they are used corresponding to the characteristics.
Among them, a mechanical repair method, is repair cracking, crack progress after the construction and effect of the thermal strains by welding can be considered to be less. In this paper, tensile test and fatigue test of the mechanical repair method are conducted to examine structural performance. These tests show fracture and mechanical properties of steel structural members and aim to be a basic data to propose fatigue design.
