Presently, the majority of tubular joints in long-span steel transmission towers are gusset joints and unstiffened joints. And general forms of joints are K-joints and TY-joints. As to the gusset connection joints, however, the computation of ultimate strength has not been mentioned in current PRC codes. It's also necessary to study further on the strength character of stiffened joints.Based on the project of YaMen long-span transmission tower, several reduced scale tubular K-joints and TY-joints are tested...
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