Combined type tension dome structure for rigid roof

Abstract

The invention discloses a combined type tension dome structure for a rigid roof. The combined type tension dome structure comprises an external cable-truss structure and an internal cable-dome structure, the external cable-truss structure comprises an external ring, cable-truss ridge cables, a cable-truss upper ring cable, a cable-truss lower ring cable and cable-truss oblique cables, the internal cable-dome structure comprises an internal pull ring and at least one round of circumferential direction assembly, wherein the at least one round of circumferential-direction assembly is arranged between the internal pull ring and the external cable-truss structure. According to the combined type tension dome structure for the rigid roof, the stress principle and structural feature that the external cable-truss structure is supported by the internal cable-dome structure to form a tension structure, an inhaul cable is tensioned by tensioning the inhaul cable, the inhaul cable is pulled, and accordingly supporting rods are stressed are achieved; the circumferential-direction assembly is adopted to form a circumferential-direction lateral force resisting system, the capacities resisting torsion and unsymmetrical loads of the structure are enhanced, the defects of poor torsion resistance ability and poor outer stability due to the fact that a tensile membrane material roof is not adopted are overcome better; meanwhile, the external cable-truss structure can adopt a more compact structural arrangement than the internal cable-dome structure so that the span of a roof system can be reduced, and paving of the rigid roof is facilitated; and the combined type tension dome structure for the rigid roof is suitable for various environments, and has a higher adaptability in large-size public buildings such as a gymnasium.

Description

Technical field [0001] The invention belongs to the technical field of construction engineering, and particularly relates to a rigid roof combined tension dome structure that can be applied to large-span buildings such as gymnasiums and exhibition halls. Background technique [0002] The cable dome structure is a tension structure proposed by the American engineer Geiger based on Fuller's overall tension structure. As early as the 1940s, Fuller believed that the operation of the universe is based on the principle of tensioning the whole. He therefore envisioned that a truly efficient structural system should be a self-balancing system of pressure and tension. In 1984, his student, the sculptor Snelson, completed the first overall model of tension and designed urban sculptures based on it, which proved Fuller's vision and was recognized as a starting point for the development of the overall structure of modern tension. Fuller received greater encouragement and inspiration from th...

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Problems solved by technology

[0004] Although the cable dome structure has been developed rapidly abroad, its development in my country is relatively lagging behind. On the one hand, it is due to its technical difficulty. Although the material has the advantages of good permeability, it limits the form of the building, is sensitive to wind loads, has high environmental requirements, cannot hang other loads at will, and is expensive, which reduces the scope of application of the cable dome

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