The authors have proposed a method for patch plate reinforcement using high-strength stud bolts that can be installed from one side. However, the effect of the stud arrangement on load transfer is not yet fully understood. This study investigates how different stud arrangements affect the mechanical behavior, including slip by using FEA. As a result, even when the number of bolts in the first row was small, the staggered arrangement effectively suppressed slippage at the edge of the patch plate. This confirms that the stud arrangement has a significant impact on the load transfer mechanism. However, its effect on the overall reinforcement of the patch plate was found to be minimal.
