Spherical reticulated shell composed of connected quadrilateral-planed six-rod tetrahedron units

Abstract

The invention discloses a spherical reticulated shell composed of connected quadrilateral-planed six-rod tetrahedron units. In the structure of the prior art, the number of node concurrent rod pieces is large, which leads the installation and the construction to be difficult. The quadrilateral-planed six-rod tetrahedron unit comprises an upper chord, a lower chord and four web members. The upper chord and the lower chord are in space quadrature arrangement at the center of the rod pieces; the four web members are respectively connected with the upper chord and the lower chord; the spherical reticulated shell is formed by radially and toroidally extending quadrilateral-planed six-rod tetrahedron unit along the open-mouthed spherical shell; among the basic units, the nodes of the upper chords are connected and the nodes of the lower chords are connected; when the quadrilateral-planed six-rod tetrahedron units radially extend, the radial rod pieces of each unit are the same in length, the toroidal rod pieces of each unit have linear variation in length, and a circle of rod pieces are added in the inner ring of the structure from the opening edge to the bottom edge of the shell body. The spherical reticulated shell has stable structure, fewer node concurrent rod pieces and simple and beautiful shape.

Description

technical field

[0001] The invention relates to the construction field, in particular to a spherical reticulated shell connected and assembled by quadrilateral planar six-rod tetrahedron units. Background technique

[0002] Triangular pyramid units, quadrangular pyramid units and hexagonal pyramid units are the basic components of the current grid and reticulated shell structures. The triangular pyramid unit is composed of 6 rods, which is a geometrically stable structural basic unit. To make it form a reticulated shell structure, it is necessary to add some connecting rods between the basic units. The triangular reticulated shell is based on the inverted triangular pyramid as the basic unit of the reticulated shell. With the different layout methods of the triangular pyramid units, the upper and lower chord grids can be triangular or hexagonal, thus forming different forms of triangular reticulated shells. The quadrangular pyramid unit is composed of 8 rods, which is a geo...

Examples

Embodiment Construction

[0027] Aiming at the deficiencies of the prior art, the present invention proposes a spherical reticulated shell composed of quadrangular planar six-rod tetrahedron units connected and combined.

[0028] Such as figure 1 As shown in (a) and (b), the quadrilateral planar six-bar tetrahedron unit is composed of an upper chord 1, a lower chord 3 and a web 2. The upper chord 1 and the lower chord 3 of this basic unit are in the rod The central position of the piece is arranged orthogonally in space, and the four webs are respectively connected to the nodes of the upper and lower chords, forming the basic unit of a tetrahedral quadrilateral planar six-rod tetrahedron with the upper chord and the lower chord or the tetrahedral basic unit of a quadrilateral planar six-rod tetrahedron with the upper chord and the lower chord.

[0029] According to the different layout positions of the units, the upper chord ring and the lower chord meridian can be formed into a two-way broken line sph...

technical field

[0001] The invention relates to the construction field, in particular to a spherical reticulated shell connected and assembled by quadrilateral planar six-rod tetrahedron units. Background technique

[0002] Triangular pyramid units, quadrangular pyramid units and hexagonal pyramid units are the basic components of the current grid and reticulated shell structures. The triangular pyramid unit is composed of 6 rods, which is a geometrically stable structural basic unit. To make it form a reticulated shell structure, it is necessary to add some connecting rods between the basic units. The triangular reticulated shell is based on the inverted triangular pyramid as the basic unit of the reticulated shell. With the different layout methods of the triangular pyramid units, the upper and lower chord grids can be triangular or hexagonal, thus forming different forms of triangular reticulated shells. The quadrangular pyramid unit is composed of 8 rods, which is a geo...

Examples

Embodiment Construction

[0027] Aiming at the deficiencies of the prior art, the present invention proposes a spherical reticulated shell composed of quadrangular planar six-rod tetrahedron units connected and combined.

[0028] Such as figure 1 As shown in (a) and (b), the quadrilateral planar six-bar tetrahedron unit is composed of an upper chord 1, a lower chord 3 and a web 2. The upper chord 1 and the lower chord 3 of this basic unit are in the rod The central position of the piece is arranged orthogonally in space, and the four webs are respectively connected to the nodes of the upper and lower chords, forming the basic unit of a tetrahedral quadrilateral planar six-rod tetrahedron with the upper chord and the lower chord or the tetrahedral basic unit of a quadrilateral planar six-rod tetrahedron with the upper chord and the lower chord.

[0029] According to the different layout positions of the units, the upper chord ring and the lower chord meridian can be formed into a two-way broken line sph...

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