Foldable cylindrical latticed shell structure

Abstract

The invention discloses a foldable cylindrical latticed shell structure which is formed by connecting a plurality of trusses of folding arch units, wherein each truss of folding arch unit is formed by n rectangular pyramid basic units in the span direction of the structure; each rectangular pyramid basic unit consists of four forward folding shear type units which are connected end to end through nodes at the end parts to form a ring; the middle nodes of the four folding shear type units are positioned in the same plane, and every two adjacent trusses of folding arch units are connected with each other through a backward folding shear type unit; nodes at the end parts of the backward folding shear type units are connected to the node at the end parts of the forward folding shear type units of each truss of folding arch unit in the length direction of the structure. Compared with the conventional structure, the foldable cylindrical latticed shell structure has the advantages that the structure can be opened and closed as required, and the opening and closing processes are convenient; furthermore, the sizes of the folding shear type units are uniform, so that the folding shear type units are convenient to manufacture, and the structure is high in stability.

Description

Technical field [0001] The invention relates to a cylindrical reticulated shell structure, in particular to a foldable cylindrical reticulated shell structure formed by connecting the front and back of a folding rod shear type unit. Background technique [0002] The folding net shell structure roof conforms to the contemporary architectural concept and is a major development trend of large-span spatial structures. It is more and more favored by people. The folding net shell structure has aroused great interest of modern architects because of its short construction period, easy relocation and reusability. However, it is rarely used in large-span structures. The main reasons are: (1) The node design of the folded grid structure is generally more complicated. At present, there is no simple structure, practical, low-cost node design suitable for engineering applications; (2) In addition to the axial force, the components of the folded grid structure are also subject to a certain ben...

AI Technical Summary

Problems solved by technology

However, it is rarely used in long-span structures. The main reasons are as follows: (1) The node design of folded grid structures is generally complicated, and there is still a lack of simple, practical, and low-cost node designs suitable for engineering applications; (2) In addition to the axial force, the members of the folded grid structure are subject to a certain bending moment, the mechanical performance is not good, and the cost is high; (3) The stiffness of the folded grid structure is very poor, and the displacement is difficult to meet the use requirements

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