Double-layer three-way large-opening flexible cable net space structure system

Abstract

The invention relates to a double-layer three-way large-opening flexible cable net space structure system which comprises an upper-layer load-bearing cable net, a lower-layer load-bearing cable net, a middle-layer load-bearing cable net and a lower-layer load-bearing cable net. The outer ring beam is arranged on the annular outer ring of the upper-layer bearing cable net; the inner ring cable is arranged on the annular inner ring of the upper-layer bearing cable net and serves as an inner boundary to form a middle large opening of a space structure; the uprights are distributed below the outer ring beam, the upper ends of the uprights are fixedly connected with the outer ring beam, and the lower ends of the uprights are fixedly connected with the lower supporting structure; the lower-layer form cable and the bidirectional upper-layer bearing cable are intersected in three directions on the plane projection; and the abdominal cable is connected with the upper-layer load-bearing cable and the lower-layer form cable. According to the large-area column-free space roof, through reasonable layout of the cable net and optimization of the whole cable net force transmission path, cable body stress distribution is uniform, deformation is small in the loaded state, the structural system is more stable, the collapse resistance is higher, and the large-area column-free space roof is widely applied.

Description

technical field [0001] The invention relates to the technical field of building structures, in particular to a large-span space structure system, in particular to a double-layer three-direction large-opening flexible cable net space structure system. Background technique [0002] At present, in order to maximize the formation of a large indoor space without columns to meet the needs of accommodating competition venues and large-scale exhibitions, large-span buildings such as stadiums and exhibition halls also widely use cable-net structures. For large-span annular hyperbolic spaces , the cable-net structure can be used as the roof structure. [0003] For the traditional cable net structure, it is usually a single-layer structure. For example, Chinese Invention Patent Publication CN111980265A mentions a bird's nest-type single-layer space cable net roof structure based on Pengsele closed polygonal star. The layer structure system has low bearing capacity, low structural rigi...

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Problems solved by technology

[0005] Furthermore, the existing cable-net structure system, especially the hub-and-spoke cable-net structure, due to the characteristics of the structural system, the outer ring cables and the inner ring cables are directly connected by structural cables, and the cable layout is basically sparse on the outside and dense on the inside. As a result, the force of the cable is not uniform, and its shape is difficult to achieve a state of uniform stress distribution. The structural stability is poor, the molding shape is not beautiful, and the construction is difficult.

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