Air-inflated membrane structure with crossing cable net arranged along geodesic line

Abstract

The invention relates to an air-inflated membrane structure with a crossing cable net arranged along a geodesic line. The air-inflated membrane structure comprises an air-inflated membrane and bracing cables, wherein after the air-inflated membrane is shaped through inflating, the middle part of the air-inflated membrane is of a cylindrical body, the two ends of the air-inflated membrane are of smooth-transition arc-shaped peripheral membrane faces, and the bracing cables are arranged on the peripheral membrane faces along the direction of the geodesic line in a manner that anchor points at the two ends of each bracing cable are taken as starting points. Compared with the prior art, the air-inflated membrane structure has the advantages that the concept that the geodesic line is the shortest in a spatial curved face is utilized, the crossing cable net is arranged at the periphery of the air-inflated membrane along the direction of the geodesic line, and the bracing cables are restricted to lateral movement and cannot be subjected to the problem of swinging under normal use; and as the bracing cables are restricted to the lateral movement, the number of nodes, connected with the bracing cables, in the whole peripheral crossing cable net can be accordingly reduced, the stress on the nodes is smaller, the difficulty of construction is reduced, and then, the economical efficiency and safety of the structure are increased.

Description

technical field [0001] The invention belongs to the technical field of building structures, and in particular relates to an inflatable membrane structure arranged with cable nets along a geodesic line, which is an innovation in the application of the inflatable cable-membrane structure. Background technique [0002] The inflatable membrane structure has the advantages of low cost, fast construction, easy installation and disassembly, large span, and good economic benefits. It is widely used in large-space, long-span sports and public facilities such as sports fields, exhibition halls, and warehouses. However, in practical engineering applications, the wind and snow resistance of the inflatable membrane structure is poor, so a certain number of cables are often arranged around the inflatable membrane in engineering to form a system in which the membrane surface and the cables bear external forces together. By controlling the internal force distribution on the membrane surface...

AI Technical Summary

Problems solved by technology

The consequences of this are: when the inflatable membrane structure is formed, the cable and the membrane surface are not tightly fitted, and the cable has a large lateral swing under wind load, often leaving black scratches on the white membrane surface , affecting the aesthetics of the membrane structure

More importantly, the swing of the cable will affect the internal force distribution between the membrane surface and the cable, reducing the stiffness and bearing capacity of the inflatable membrane structure

At the same time, in order to limit the lateral movement of the cable, it is necessary to set up more nodes to connect the cables, which increases the difficulty of construction; and the force of the nodes is relatively large, and the nodes are often broken.

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