EVALUATION OF STRENGTH AND STIFFNESS OF SAGEKAMA AND TSUTSUMIKOMINUKI CONNECTIONS FOR TRADITIONAL WOODEN CONSTRUCTION

Abstract

This paper describes the evaluation of strength and stiffness of Sagekama and Tsutsumikominuki connections for traditional wooden constructions. By means of experiments of T-type specimens, thickness of Nuki becomes larger the strength of specimen becomes large. Comparing the experimental results and calculated ones owing to the evaluation equation for Hottatebashira, calculated values by this equation agrees well with experimental ones of mentioned above connections. The compressive stress and friction stress contribute to the strength and stiffness of connections. Using 0.4 for Sagekama and 0.3 for Tsutsumikominuki as a friction coefficient, we can evaluate the strength and stiffness of these connections correctly. In case of H-type specimens, by modification of this equation we can evaluate experimental results fairly well.