Half-intersected and half-bolted latticed frame of 750 kV steel pipe

Abstract

The invention discloses a half-intersected and half-bolted latticed frame of 750 kV steel pipe, wherein an assistant rod and a main road of equal width of the front and back side are welded across each other, the changeable assistant rod and main rod of the front and back side are connected by bolts of a gusset plate, and the assistant rod and main rod of the front and back side of the girder are welded across each other, and the assistant road and main road of the top and bottom of the girder are connected by bolts of the gusset plat; the section of the main material and auxiliary material of the girder are smaller after intersected connection, and almost half of the gusset plate, stiffening plate and connecting bolts and other auxiliary materials are canceled, thereby the steel consumption of the latticed frame of 750 kV can be decreased, the benefits of the economy and environment protection is more effective, and the overall elevation effect is more beautiful and lightsome.

Description

[0001] 【Technical field】 [0002] The invention belongs to the field of power transmission and transformation, and relates to a half-intersecting half-bolt connection 750kV steel pipe lattice structure. [0003] 【Background technique】 [0004] Up to now, more than thirty 750kV substations have been built and put into operation in Northwest China. In the 750kV substation, the 750kV structure is the focus, difficulty and highlight of the design. In addition to ensuring the safety and reliability of the structure, factors such as cost and lightness of appearance should also be considered. [0005] The existing rectangular steel pipe lattice frame is composed of steel pipe lattice columns and rectangular steel pipe lattice beams. The beams and columns of the rectangular steel pipe lattice frame are connected by four round steel pipe chords and many round steel pipe webs to form a space portal frame, which jointly bears the pulling force of the wires. Beautiful and other advantag...

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Problems solved by technology

[0006] The disadvantage of this kind of frame is that the steel consumption of auxiliary materials such as connecting gusset plates, stiffening plates and connecting bolts between the beam-column main rod and the web rod is relatively large, accounting for about 30% of the overall steel consumption of the frame.

At the same time, the on-site assembly workload is relatively large, which fails to better reflect the concept of prefabricated substations

[0007] Although the node connection form of the above structure has a simple structure and clear force, with the large-scale construction of substations and converter stations, the shortcomings of the large proportion of steel used for node plate bolt connection and slow on-site assembly are also more prominent

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