Hemispherical hollow welding sphere joint for large-span space steel structure support

Abstract

The invention provides a hemispherical hollow welding sphere joint for a large-span space steel structure support. The hemispherical hollow welding sphere joint at least comprises four foundation bolts which are connected with at least two embedded plates. At least one outer stiffening plate is welded to each embedded plate. A hemispherical case is respectively connected with the embedded plates and the outer stiffening plates in a welded mode. The hemispherical case is used as a sphere joint, at least one main pipe and one branch pipe are welded to the hemispherical case, and a transverse semicircular stiffening plate and a longitudinal semicircular stiffening plate are further welded to the hemispherical case. The hemispherical hollow welding sphere joint has the following advantages that a novel joint form is designed for the large-span space steel structure support, and the defects of the joint form in the application field are effectively made up; the height of the steel support is reduced, the length of the welding joint is increased, larger horizontal shearing force can be borne, and the tensile strength of the foundation bolts is benefited; the hemispherical case, the transverse semicircular stiffening plate, the longitudinal semicircular stiffening plate, the outer stiffening plates and the embedded plates are connected, and therefore the safety of the joint is ensured.

Description

technical field [0001] The invention relates to the field of construction, in particular to a connection node used for a support part of a large-span space steel structure. Background technique [0002] With the development of social economy and technology, the large-span space steel structure, which reflects the characteristics and functional requirements of the times, has been increasingly widely developed and applied, especially in the fields of large-scale stadiums and dry coal sheds of power plants. While the architectural creativity and functional requirements are diversified, the design and construction of the large-span space steel structure also poses a huge challenge to its node technology requirements. [0003] At present, the connection joints of large-span space steel structure supports are usually welded spherical joints with stiffeners, such as figure 1 , 2 shown. Although this connection form has been widely used and improved in many ways, the following pr...

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Problems solved by technology

[0005] 2) From the point of view of force, the horizontal bearing capacity of the joint is limited by the length of the weld on the span-to-span stiffener; and when the horizontal force is large, since the support has a certain height, the additional bending moment generated by the horizontal force, It has an adverse effect on the tensile strength of the anchor bolts; at the same time, when the normal pressure is high, the requirements for the bending resistance of the embedded slab are high, the thickness of the embedded slab is relatively large, and even Z-direction performance slabs are used, which brings inconvenience to processing and construction

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