Connection node of steel structure

Abstract

The invention belongs to the technical field of building and provides a connection node of a steel structure. The connection node comprises an upper node body and a lower node body, wherein the upper node body is cylindrical; the lower node body is hemispherical; and the top of the lower node body is plane, and fixedly connected with the bottom surface of the upper node body. By adoption of the connection node provided by the invention, square and circular rods can be intersected on one node; besides, the spatial distribution directions of all the rods are different, and the axes of all the rods are not intersected on one point, thereby avoiding the complication of node stress ways; meanwhile, the problem about stress concentration can be solved in a node assembling and welding process; the contact area between the rods and the node is enlarged, cross welds are avoided, and the improvement of the connection strength between the rods and the node is facilitated; and when such mode structure is assembled with the rods, no intersecting sequence restriction is formed among the rods, the rods are prevented from influencing one another when being assembled and welded, and the node machining and manufacturing difficulty is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of construction, and in particular relates to a connection node of a steel structure. Background technique [0002] In recent years, with the continuous development of steel structures, more and more buildings with novel structures and unique shapes have emerged as the times require. Their complex structural systems and force transmission paths have higher requirements for joint design. [0003] In the existing joint structure, one of the structural forms is to use one bar to directly pass through, and other bars to intersect with it, add stiffeners to the bars in the node area or partially increase the size and thickness of the bars, but The final effect is poor, the weight of the node is heavy, and the purpose of node optimization cannot be achieved. Moreover, the force on a single member in the node area is too concentrated, and the force on the node and the way of force transmission are relatively singl...

AI Technical Summary

Problems solved by technology

Although, through cross board nodes (such as figure 1 shown), can partially solve the problem of weld stress concentration, but the number of members connected to the cross plate joint is limited. Can't better bear and transmit force

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