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This paper presents the results of static cyclic loading tests and simulation analysis for four types of traditional wooden frames in order to understand the seismic performance of frames with uneven large section beams (Sashigamoi) and to clarify the influence of the beams and shapes of fitting-type joints on the behavior of the whole frame. Major findings are as follows: (1) In the static loading tests, two-span frames underwent column splitting or column breaking more readily and with smaller deformation than in the case of one-span frames. In addition, the shear forces exhibited directional dependence, which is attributed to the asymmetry of the frames or the shapes of the column-beam joints. (2) A method for modeling traditional fitting-type joints was developed, and analysis results were in good agreement with the test results. (3) Based on parametric studies, the smaller the beam height distance, the smaller the difference in the restoring force with the loading direction.

ARRANGEMENT OF EARTHQUAKE RESISTANT ELEMENTS AND STRUCTURAL PROPERTIES OF TWO-SPAN TRADITIONAL WOODEN FRAMES WITH LARGE SECTION BEAMS