Plane truss type framework girder structure of transformer substation and design method of plane truss type framework girder structure

The invention relates to the technical field of electric power engineering framework design, in particular to a transformer substation plane truss type framework beam structure and a design method thereof.The transformer substation plane truss type framework beam structure comprises chord members, web members and end vertical fixed connection nodes, the two ends of the chord members are vertically and fixedly connected with transformer substation framework columns, and the chord members are hinged to the web members. An upper chord and truss web members on the two sides are omitted, and the two-end fixedly-connected beam stress model is adopted inside and outside the plane for design, so that the effect of saving steel is achieved. 本发明涉及电力工程构架设计的技术领域，具体是指一种变电站平面桁架式构架梁结构及其设计方法，包括弦杆、腹杆和端部竖向固接节点，所述弦杆两端与变电构架柱竖向固接，所述弦杆与腹杆相铰接，其使用平面式的构架梁，取消了上弦杆和两侧桁架腹杆，且在平面内外均采用两端固接梁受力模型进行设计，达到节省钢材用量的效果。