はりS柱SRCで構成されるト字形骨組の柱はり接合部の応力伝達機構

概要

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To clarify the mechanism of stress transfer from a steel beam to a composite column through the beam-column joint, ten exterior beam-column assemblies are tested under reversed cyclic loading. The experimental variables are the ratio of the flexural strength Ms in the steel part of the column to the flexural strength Mo of the composite column and the applied axial load. Ms/Mo is 0, 0.35, 0.65 and 1.00. The applied axial load is 0% and 20% of the ultimate compressive strength of the column and 20% of the tensile strength of the column. Specimens are designed so as to prevent a shear failure of beam-column joints. The ultimate strength and hysteretic characteristics of the joint are considerably affected by the ratio of Ms/Mo and the applied axial load. A rational model capable of predicting the ultimate strength of the joint is proposed. Predictions are shown to be in good agreement with the test results. To develope the flexural strength of the adjoining members, csMA/bsMA=0.4 is reasonable value where, csMA and bsMA denote the flexural capacities of the steel part of columns and beams, respectively.
一般社団法人日本建築学会の論文