Longitudinal truss

Abstract

The invention discloses a longitudinal truss. A first connecting end plate is respectively arranged at the end parts of transverse node chords of a top chord; a second connecting end plate is respectively arranged at the end parts of transverse node chords of a bottom chord; a plurality of triangular stiff plates A and triangular stiff plates B are respectively arranged at the peripheries of the first connecting end plates and the second connecting end plates; a third connecting end plate is respectively arranged at the end parts of left and right slant web members; a fourth connecting end plate is respectively arranged at the end parts of left and right horizontal web members; a plurality of triangular stiff plates C and triangular stiff plates D are respectively arranged at the peripheries of the third connecting end plates and the fourth connecting end plates; and the first, second, third and fourth connecting end plates are provided with a plurality of bolt holes and a plurality of high-strength bolt connection pairs respectively. The longitudinal truss reduces high-altitude welding construction and the investment on safety facilities for high-altitude welding construction, thereby lowering the investment cost on the safety facilities; the construction is speed up and the project quality is improved; and the security risk and the manual input are reduced and the plate utilization ratio of a workshop is improved.

Description

technical field [0001] The invention relates to the technical field of building steel structure space truss structures, in particular to a longitudinal truss. Background technique [0002] In the prior art, in the installation and construction of trusses in steel structure engineering, especially in the installation and construction of large-span steel structures in space, the welding quality of the connection joints between longitudinal trusses and transverse support trusses is not easy to guarantee. It is difficult to ensure that it is within the allowable range of the specification (GB50205-2001), the construction progress is difficult to further improve, the project quality is not easy to improve, the safety risk is high, and the labor cost and facility investment are relatively large. Contents of the invention [0003] In order to solve the above problems, the object of the present invention is to provide a longitudinal truss with a simpler, more reasonable, safer, mo...

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Problems solved by technology

[0002] In the prior art, in the installation and construction of trusses in steel structure engineering, especially in the installation and construction of large-span steel structures in space, the welding quality of the connection joints between longitudinal trusses and transverse support trusses is not easy to guarantee. It is difficult to ensure that within the allowable range of the specification (GB50205-2001), the construction progress is difficult to further improve, the project quality is not easy to improve, the safety risk is high, and the labor cost and facility investment are relatively large

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