Multi-hinge-line lifting-up spherical surface reticulated shell structure and construction method thereof

Abstract

The invention relates to a multi-hinge-line lifting-up spherical surface reticulated shell structure and a construction method thereof. The multi-hinge-line lifting-up spherical surface reticulated shell structure comprises a toroidal steel tube a, a toroidal steel tube b, a radial steel tube a, a radial steel tube b, a radial steel tube c, a perforated steel ball, a pin shaft, a single-hole bloom, a single-hole ear plate, a cast steel support, rigid nodes, a unidirectional hinged joint and a unidirectional rotary hinge support node, which are connected through the rigid nodes to assemble into an inner ring small-sized reticulated shell and a mechanism, the inner ring small-sized reticulated shell and the mechanism are connected through the unidirectional hinged joint to form a hinge line, and the hinge line is connected with the support through the unidirectional rotary hinge support node so that the inner ring small-sized reticulated shell is lifted up to drive the adjacent mechanism to rise. When three hinge lines rises to a designed height, two hinge lines are cancelled, the lifted part becomes a structure, and the process is repeated until a whole structure is formed. The invention has the advantages of convenient construction, short construction period and clear and reasonable force flow and is suitable for common industrial and civil buildings, in particular large-span space structures such as exhibition centers, gymnasiums, airport terminals and the like.

Description

technical field [0001] The invention relates to a design and construction technology of a reticulated shell, more specifically, relates to a multi-hinge lifting spherical reticulated shell structure and a construction method thereof. Background technique [0002] One area of ​​future development for spatial grids is collapsible and unfoldable structural forms. There are two main types of folded reticulated shell structures at present. The first type is a hyperboloid folded reticulated shell structure, also known as "Panda dome structure"; the second type is a cylindrical folded reticulated shell structure. The basic principles of the above two forms are to temporarily change the reticulated shell structure into a geometrically variable system by setting three hinge lines and temporarily removing some hoop members. However, there are disadvantages in the above two folded reticulated shell structures. Among them, the movable hinge axis of the cylindrical folded reticulated ...

AI Technical Summary

Problems solved by technology

Since there is no hoop effect in space, its lateral stiffness is poor, and it may shake especially under the action of wind

The Panda dome system divides the structure into three parts from the inside to the outside by setting three hinge lines, the central part, the middle part and the outer peripheral part. During the whole process, the spatial rotation axis is only three parallel fold lines, and the structure is lifted into place only once. , the structural geometry is completely different from that of the present invention. In addition, part of the climbing dome system will generate structural internal force due to the destruction of the mechanism during the jacking process, and sometimes it is huge, which will affect the structural safety.

When the above two types of reticulated shell structures are assembled on the ground, the assembled structure still has a relatively high height, and a large number of scaffolding and other auxiliary installation equipment need to be erected. The ground construction still needs to be carried out at a higher height from the ground. In terms of economy and safety, The existence of insufficient, can not fully reflect the great advantages of the folding structure

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