STUDY ON IMPROVING ACCURACY OF PULL-OUT YIELD STRENGTH EVALUATION OF MORTISE-TENON (KOMISEN) JOINTS IN TRADITIONAL WOODEN BUILDINGS

We conducted pull-out experiments on test pieces that imitated "komisen" joints of traditional wooden buildings and examined the fracture mechanism and conducted material tests on the test piece sets based on the fracture mode observed in the pull-out experiment to obtain basic data on the material properties. In addition, we evaluated the yield strength by the existing EYT formula and compared with the experimental results, and considered the applicability of the existing formula. Also, we constructed two-dimensional FEM models that simulate the pull-out fracture of the joints and compared the experimental results with the analysis results.