Unfoldable cylindrical lattice shell structure with four rigid plate folding units

Abstract

The invention discloses a foldable cylindrical structure with four rigid roof plates. The foldable cylindrical structure is composed of multiple truss folding arch units which are connected in the length direction and are provided with rigid roof plates; each truss folding arch unit consists of n rectangular pyramid basic units connected along the span direction of the structure; each rectangular pyramid basic unit consists of four positive folding rod shear-type units; every two adjacent truss folding arch units are connected by virtue of a reverse folding shear-type unit; the rectangular pyramid basic units are provided with rigid roof plate units; each rigid roof plate unit consists of four quadrilateral plates; four joints at the upper layer of each rectangular pyramid basic unit are articulated with four joints at the outmost ring of the corresponding rigid roof plate unit. The unfoldable cylindrical lattice shell structure is of a single-degree-of-freedom system, and the driving device quantity is reduced; in addition, since the number of parts of the structure is far less than that of a common folding lattice structure, by virtue of rigid plates, the structure is flexible to unfold and fold, the structure rigidity is increased, and the unfoldable cylindrical lattice shell structure is simple in structure construction and convenient in design and construction.

Description

technical field [0001] The invention relates to a folded cylindrical reticulated shell structure based on rigid roof panels, in particular to an expandable cylindrical reticulated shell structure with four rigid plate folding units. Background technique [0002] The folding structure roof conforms to the contemporary architectural concept, and is a major development trend of the large-span space structure, and it is more and more favored by people. Folding structures have aroused great interest of modern architects because of their advantages such as short construction period, easy relocation and reusability. 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...

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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