Trussed girder joint structure and manufacturing method: Fid-Bau Portal

Trussed girder joint structure and manufacturing method

LIU BIN / PU BEICHEN / TONG JINGSHENG / SUN HAIFENG / JIANG LEI / WU PING

The invention relates to the technical field of bridge engineering, and discloses a truss girder node structure which comprises a chord member and at least one web member, a side plate of the chord member and a side plate of the web member are integrally formed, a first arc transition side plate integrally formed with the chord member and the web member is arranged at the adjacent position of the chord member and the web member, and a top plate of the chord member and a top plate of the web member are fixedly connected. The inner sides of a top plate, a side plate and a bottom plate of the chord member are fixedly connected with first perforated steel plates extending in the length direction of the chord member, the inner sides of a top plate and a side plate of the web member are fixedly connected with second perforated steel plates extending in the length direction of the web member, and the chord member and the web member are filled with concrete. In addition, the invention further discloses a manufacturing method of the truss girder joint structure. The defects that an existing truss girder node is dense in welding seam, high in welding seam residual stress, low in node rigidity, low in node bearing capacity, low in fatigue strength and the like are overcome.

本发明涉及桥梁工程技术领域，公开了一种桁梁节点结构，包括弦杆和至少一个腹杆，所述弦杆的侧板和所述腹杆的侧板一体成型，且二者邻接处设置有与其一体成型的第一圆弧过渡侧板，所述弦杆的顶板和所述腹杆的顶板固定连接，所述弦杆顶板、侧板和底板的内侧均固定连接有沿所述弦杆长度方向延伸的第一开孔钢板，所述腹杆的顶板和侧板内侧固定连接有沿所述腹杆长度方向延伸的第二开孔钢板，所述弦杆和腹杆内填充有混凝土。此外本发明还公开了一种桁梁节点结构的制造方法。本发明克服现有桁梁节点焊缝密集、焊缝残余应力高、节点刚度、节点承载力及疲劳强度较低等不足。

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