In large steel structures, there is a tendency for the thickness of the used members to increase. Additionally, when assembling members on-site, joints are always necessary. Against this background, this study focuses on the high-strength bolted frictional joints in thick plates. Regarding frictional joints in thick plates, numerous studies have been conducted, providing valuable insights into the mechanical behavior, including slip and yield, at the joints. However, in the ultimate state, particular bolt failure mode, given the large plate thickness, posing challenges such as insufficient energy absorption capacity in the joint. Therefore, as an attempt to improve energy absorption capacity while maintaining slip resistance, a novel friction joint structure was proposed by combining two or more splice plates with enlarged bolt holes. The proposed joint structure aims to increase energy absorption capacity at ultimate state by deliberately inducing plastic deformation in selected splice plates. In order to assess the proposed joint structure, ensuring the maintenance of slip resistance and evaluating energy absorption capacity, this study conducted FEM analysis. The analysis included parametric studies by varying the thickness, number, and hole diameter of the splice plates. The results of the analysis revealed an improvement in the joint’s energy absorption capacity when utilizing the proposed joint structure. Additionally, multiple plastic zones occurred in the bolt axial region, contributing significantly to enhanced deformation performance.