Open type super-long-span cable dome structure

Abstract

The invention discloses an open type super-long-span cable dome structure. The structure is composed of an internal truss ring, an external pressure ring beam and a cable-strut system; the cable-strutsystem comprises a ring cable, supporting rods, an inner ring cable system and an outer ring cable system; the internal truss ring, the ring cable and the external pressure ring beam are coaxially arranged from inside to outside; the supporting rods are uniformly arranged in the circumferential direction and supported on the ring cable, and the supporting rods and the ring cable are crossed at the lower joints of the supporting rods. The inner ring cable system comprises inner ridge cables and inner stay cables, wherein the two ends of each inner ridge cable are connected with the internal truss ring and the corresponding supporting rod respectively, and the two ends of each inner stay cable are connected with the internal truss ring and the corresponding supporting rod respectively. Theouter ring cable system comprises outer ridge cables and outer stay cables, wherein the two ends of each outer ridge cable are connected with the corresponding supporting rod and the external pressurering beam respectively, and the two ends of each outer stay cable are connected with the corresponding supporting rod and the external pressure ring beam respectively. By means of the open type super-long-span cable dome structure, the defect that a lattice shell structure and a cantilever truss structure have many rods is overcome, and meanwhile, the problems that a cable net structure is largein supporting stress and the like are avoided, so that the structure is uniform in rigidity, and the joint construction is relatively simple. Meanwhile, a closed type cable dome is changed into the open type cable dome so that the cable dome, namely the integral tension self-balanced structure system, can be applied in a building roof structure of a stadium.

Description

technical field [0001] The invention relates to the field of building structures, and relates to a large-span venue building roof structure, and more specifically to an open-type super-long-span cable dome structure. Background technique [0002] The cable dome structure originated from the tensegrity idea proposed by the master architect Fuller. It is a large-span self-stressed space structure system composed of cables and compression rods. The structure is simple, beautiful and efficient. get more and more applications. [0003] The cable dome system is mostly used in long-span closed building structures, but less used in stadiums and other building roof structures that require large openings. [0004] The commonly used structural forms of stadium roofs that have been built and are currently under construction mainly include reticulated shell structure, cantilever truss and cable net structure. Among them, the reticulated shell structure has high rigidity, large spanning...

AI Technical Summary

Problems solved by technology

Among them, the reticulated shell structure has high rigidity, large spanning capacity, reasonable force, and rich and colorful shapes, but the reticulated shell structure generally has more rods and poor structural aesthetics; the cantilever truss structure has no end support members, wide field of view, and spatial layout. Flexible, but it needs to set up more rods to improve the structural integrity; the cable net structure is light in weight, can economically span a large space, and has various forms and flexible layout, but the edge components or supports of the system are stressed. Larger, requires larger cross-sections, wastes material

In addition, because a single cable is too long, the structure will be difficult to realize, so the width of the current stadium roof is about 30m

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