山形鋼筋違接合部の耐力に関する研究

概要

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Many braced steel buildings were damaged heavily by the 1978 Miyagiken-oki Earthquake owing to the premature failure at the joints of brace-to-gusset plate. From the view point of aseismic design of braced steel frames, the jointed part of the braced may not break before the bracing member itself does yield at its gross section. Therefore, it is important to estimate the maximum strength of brace joints. In this paper, the results of experiments on the joints of brace-to-gusset plate whose experimental variables are size of member elements (size of steel angle and gusset plate), joint type (single or double friction-bolted joints), and joint details (numbers, pitch and edge distance of high strength bolts) ape reported. Considering the key parameters which are influential in the joint strength, an experimental formula of the maximum strength of the brace joints is derived by the multiple regression analysis of the test results. Based on this estimated formula of maximum strength, the practical design formula which satisfies the aseismic requirement is obtained on the basis of statistical view point.
社団法人日本建築学会の論文
1983-03-30