Tensegrity structure unit based on hexahedron geometry

Abstract

The invention discloses a tensegrity structure unit based on hexahedron geometry. The unit is composed of 8 hinging joints, 4 pressure bars and 12 stay cables. The 8 hinging joints are respectively located at the 8 vertexes of a hexahedron. The 4 pressure bars are disposed inside the hexahedron and coincide with the 4 body diagonals of the hexahedron. The two ends of each of the 12 stay cables are respectively connected to the two opposite vertexes on the quadrangle of each face of the hexahedron. Each hinging point is connected to one pressure bar and three stay cables. The stay cables have pretension forces, the pressure bars have precompression forces, and the structure unit is a stable self-balancing cable-bar system, has relatively high structural rigidity, and has a good application prospect in establishing large prestressed cable-bar structural systems.

Description

technical field [0001] The invention is a method applied to architectural structure design and modern space structure design, in particular to a tensegrity integral structure unit based on hexahedron geometry. Background technique [0002] The tensegrity structure is a prestressed self-balancing system composed of compressed compression rod members and tensioned cables. The structural stiffness is mainly provided by the mutually balanced initial prestress between the tensioned unit and the compressed unit. Before the prestress is applied, the structure has almost no stiffness, but due to the existence of self-stress, the structure acquires stiffness and becomes a load-bearing structure under a specific geometric state, which is its essential feature different from traditional structures. It is precisely because of this essential feature that the internal force and shape of the tensegrity structure are highly correlated, showing strong geometric nonlinearity and shape adjusta...

AI Technical Summary

Problems solved by technology

However, different from traditional structural design methods, the design of large-scale and complex tensegrity structures is relatively complicated, and generally needs to be expanded and derived based on existing tensegrity structural units, and a large-scale modern prestressed structure is formed according to certain rules. structural system

[0003] Although there have been some tensegrity structural units based on hexahedral geometry, due to the difference in geometric configuration and initial prestress of the structure, the stiffness of different structures is also different, and there are also great differences in practical engineering applications.

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