Folding cylindrical surface membrane structure provided with rigid support rods

Abstract

The invention discloses a folding cylindrical surface membrane structure provided with rigid support rods. The folding cylindrical surface membrane structure comprises a latticed shell structure and a membrane structure arranged on the latticed shell structure, wherein the latticed shell structure is formed by connecting a plurality of trusses of folding arch units; each truss of folding arch unit is formed by connecting n rectangular pyramid basic units along the structural span direction; each rectangular pyramid basic unit consists of four positive folding rod scissor-like units; a membrane opening and closing unit comprises four support rods and membrane materials attached on the support rods; the upper ends of the four support rods are hinged, and the lower ends of the four support rods are respectively hinged on four ring-direction connecting nodes of each rectangular pyramid basic unit; the upper parts of the membrane materials are fixed at a point of intersection of the corresponding four support rods, and the lower parts of the membrane materials are respectively fixed on the four ring-direction connecting nodes of the corresponding rectangular pyramid basic unit. Compared with the prior art, the folding cylindrical surface membrane structure not only can be opened and closed according to the needs and is simple in opening and closing processes, but also is good in structure stability; due to a membrane opening and closing structure provided with the ring-direction support rods, the folding cylindrical surface membrane structure is lighter in self weight, flexible in opening and closing and convenient in construction.

Description

technical field

[0001] The invention relates to a foldable cylindrical membrane structure, in particular to a foldable cylindrical membrane structure with rigid struts. 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 bending moment, the mechanical performance is not good, and the...

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