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CIDECT的T型方管相贯节点静力承载力公式忽略了弦杆截面圆角效应,有限元计算表明弦杆截面圆角效应对节点极限承载力有一定的影响,尤其对于较大β的节点和弦杆截面圆角外半径较大的冷弯薄壁管材节点的影响更明显。为此将考虑弦杆截面圆角效应,并提出关于T型方管节点静力承载力的修正公式。
CIDECT's T-square tubular cross-section load bearing capacity formula neglects the chord cross-section fillet effect. Finite element analysis shows that chord cross-section fillet effect has a certain impact on node ultimate bearing capacity, especially for larger β nodes Chord rod fillet radius of the larger cold-formed thin-walled tube node more obvious. For this purpose, the fillet effect of the chord section will be considered and the correction formula for the static bearing capacity of the T-square pipe joints will be proposed.