In this study, several shapes of connection between columns and Nageshi beams with reinforcements were proposed and experimentally verified as a seismic reinforcement method for traditional wooden buildings. All specimens showed stable restoring force characteristics with no brittle fracture until the ultimate deformation state. In the case of specimens with gaps between the Nageshi beams and timbers filled in the gaps, there was almost no decrease in the strength when the gaps was small. When the orthogonal Nageshi beams was used, the yield load was about 40% to 50% of the calculated value, assuming an ideal condition.
