Double-layer butterfly-shaped steel truss joint

The utility model discloses a double-layer butterfly-shaped steel truss node which comprises a main truss, a bridge tower and a group of upper stiffening chords, the lower end of the bridge tower is connected with the main truss through a group of connecting plates, the upper stiffening chords are arranged on two sides of the bridge tower, and the upper stiffening chords and the bridge tower are connected through the connecting plates. The double-layer butterfly-shaped steel truss node is simple in structure, reasonable in design and easy to manufacture, the upper stiffening chords on the two sides are connected through a bridge tower, the stability of the truss node is greatly improved, the later use safety of the truss node is improved, and due to the arrangement of the connecting plates, the stability of connection between parts is further improved. 本实用新型公开了一种双层蝶形钢桁架节点，包括：主桁架、桥塔和一组上加劲弦，其中，所述桥塔的下端通过一组连接板与主桁架连接，所述上加劲弦设于桥塔的两侧，且两者之间通过连接板连接。本实用新型所述的一种双层蝶形钢桁架节点，其结构简单，设计合理，易于制作，通过桥塔对两侧的上加劲弦实现连接，大大的提高了该桁架节点的稳定性，提高