Structure construction and construction method of steel truss bow-tie type integrated node

Abstract

The invention discloses a structure construction and a construction method of a steel truss bow-tie type integrated node. The node comprises webs, frange plates and transverse diaphragm plates, wherein the webs are composed of chord rod parts and web rod parts; a connecting part of the chord rod parts and the web rod parts is a core area of a whole node; height of a cross section of the core area of the node is the smallest; parts from the core area of the node to left and right sides of a chord rod part of the web are a chord rod variable cross section and a chord rod uniform cross section in sequence; parts from the core area of the node to the web rod part of the web are a web rod variable cross section and a web rod uniform cross section in sequence; the frange plates are arranged between two webs; and the transverse diaphragm plates are arranged at cross section height change parts of the chord rod uniform cross section, the web rod uniform cross section, the chord rod variable cross section, the web rod variable cross section and the core area of the node, so as to balance internal forces of the frange plates. The method is applicable to the field of steel truss structures in civil engineering, is simple to manufacture and convenient in sectional construction, and meanwhile, is beneficial for reducing rigidity of the truss node, optimizing stress of rods, reducing steel consumption of the structure, and can be popularized and used in practical engineering.

Description

technical field [0001] The invention relates to a steel truss structure, in particular to a connection node of a welded box-section steel truss member and a construction method thereof. Background technique [0002] In the truss structure, due to the influence of factors such as node rigidity, axial force eccentricity, transverse connector deformation, and non-node loads, the rods not only bear the axial force in the ideal hinge model, but also inevitably have secondary bending moments at the rod ends. Especially for large-scale bridge projects and heavy machinery structures, the high load-bearing capacity requirements lead to relatively large truss member sizes, and the rigid sub-internal force effect of joints generated by rigid gusset plates or integral joints is very significant. The adverse effects of the secondary internal force of the steel truss are mainly reflected in the following four aspects: ①The bending stress induces premature strength failure, and the section...

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Problems solved by technology

However, this article only puts forward the conceptual design idea of ​​the collar-joint overall joint, without considering the structural details and components of the joint, and does not explain the specific assembly construction method. Therefore, the application of this joint in actual engineering is not yet not operable

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