Square rigid cable dome structure

Abstract

The invention discloses a square rigid cable dome structure. Rigid members form mutually vertical grids and are positioned on a convex hyperboloid; boundary ring beams are arranged at the peripheries of the grids; vertical brace rods perpendicular to the ground are arranged under grid nodes of the rigid members on horizontal symmetric axes and vertical symmetric axes as well as grid nodes of the peripheral rigid members; oblique cords are connected between the network nodes of the horizontal symmetric axes and the vertical symmetric axes and the lower ends of the adjacent inside vertical brace rods; oblique cords are connected between nodes of the boundary ring beams and the rigid members and the lower ends of the adjacent inside vertical brace rods; square down string-nets are formed among the lower ends of the vertical brace rods on the horizontal symmetric axes and the vertical symmetric axes; down string-nets are connected among the adjacent nodes of the lower ends of the peripheral vertical brace rods; and four corners are provided with down string-nets. The square rigid cable dome structure is concise in structural form and excellent in stress performance, has improved bearing capacity and stability compared with beam string structures with same span and rise-span ratio, is gentle in deformation, and saves the space at the same time.

Description

technical field [0001] The invention relates to the field of architecture, in particular to a square rigid cable dome structure. Background technique [0002] The Cable Dome structure is a new type of pre-tensioned long-span structure realized after the American engineer Geiger developed and promoted Fuller’s tensioned overall thought. It embodies Fuller’s idea that "the island of pressure exists in the ocean of tension". It is a full tension system with extremely high structural efficiency. In terms of structural form, the rib-ring cable dome designed by Geiger and the sunflower-shaped cable dome designed by Levy are two main forms of existing cable dome structures. The rib ring cable dome structure is mainly composed of radial ridge cables, radial oblique cables, ring cables and vertical compression rods, and is supported on the surrounding compression ring beams. The out-of-plane stiffness of the rib-ring cable dome structure is small, and the structure is prone to inst...

AI Technical Summary

Problems solved by technology

The out-of-plane stiffness of the rib-ring cable dome structure is small, and the structure is prone to instability under the action of asymmetrical loads. In addition, there are also disadvantages such as the notochord being easy to withdraw from work.

The sunflower-shaped cable dome structure is mainly to change the radial arrangement of the notochords into a joint square arrangement, which better solves the problem of insufficient out-of-plane rigidity and easy instability of the rib-ring cable dome. However, the current cable dome The structure still has the following problems: the notochord is easy to withdraw from the work, and the structural plane is limited to circles and ovals, etc.

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