Experimental Study on the Strength of Mechanical Fitting Joint of CFT Column

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  • 土木・建築　　ＣＦＴ用溝付メカニカル継手の耐力に関する実験的研究
  • カイセツ CFTヨウ ミゾツキ メカニカル ツギテ ノ タイリョク ニ カンスル ジッケンテキ ケンキュウ

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For the jointing method substituting flange joint of the post members of electric transmission towers, a mechanical fitting joint was devised herein. Static tensile loading tests and fatigue tests for the reduced models of the joint were carried out in order to confirm the strengths. Then, the FEM analyses of the models were also carried out. Consequently, the validity of the analytical modeling was confirmed based on the coincidence of the analytical and experimental results. It was certified that the joint has efficient fatigue strength from no fatigue crack occurring for the repeating dynamic loading. Moreover, the load-displacement relationship after fatigue test well agreed with the one of virgin members. Therefore, no decrease of the joint strength was also confirmed.

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