Lower chord bending tubular joint of inclined truss of large-span roof system

Abstract

The invention discloses a large-span roof system inclined truss lower chord bending tubular joint, and belongs to the field of truss.The large-span roof system inclined truss lower chord bending tubular joint comprises chord members and web members, the chord members comprise first chord members, second chord members and bending sections welded between the first chord members and the second chord members, and the web members are connected with the bending sections; the bending section comprises an inner bending plate, an outer bending plate and two connecting rings, the inner bending plate and the outer bending plate are oppositely arranged, and the connecting rings are welded between the inner bending plate and the outer bending plate. The chord member has the advantages that the welding difficulty of the bent part of the chord member is low, and the structural strength and stability of the bent part of the chord member are high.

Description

technical field [0001] The present application relates to the field of trusses, and in particular to the lower chord bending intersecting nodes of the inclined trusses of the large-span roof system. Background technique [0002] With the development of steel structure technology, the application of long-span trusses in space structures is more and more extensive. In actual operation, due to different architectural effect requirements, the structure of space bar trusses becomes more and more complex, and the load-bearing at nodes becomes more and more complicated. Capability is called construction focus. [0003] The intersecting joint is one of the most important joint forms in the steel structure, that is, the web is directly welded to the outer surface of the chord. During the design and construction of a large-span roof body, the applicant encountered a situation in which it was necessary to weld multiple web bars at the bend of the lower chord of the truss. The axial f...

AI Technical Summary

Problems solved by technology

The following problems exist in the conventional method of bending joints at the lower chord of the truss: first, the thickness of the steel plate is large, the load is large, and lamellar tearing is prone to occur; second, in the process of welding the steel plate to the first chord and the second chord , due to the large thickness of the steel plate, the heat input during the welding process is large, and complex protection treatment is required during the welding process, otherwise lamellar tearing will easily occur, which will affect the strength of the steel plate and make welding difficult; third, the steel plate protrudes from the The outer edges of the first chord and the second chord interfere with the connection between the web and the chord

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