Grid structure based on spherical polyhedron

Abstract

The invention discloses a grid structure based on a spherical polyhedron, which comprises nodes and connecting rods, wherein the spherical polyhedron is a 272-surface spherical polyhedron; the south pole and the north pole of the 272-surface spherical polyhedron are regular pentagonal surface; a primitive of the 272-surface spherical polyhedron is formed by three regular pentagonal surfaces, a regular hexagonal surface, three I-shaped hexagonal surfaces, six II-shaped hexagonal surfaces and six III-shaped hexagonal surfaces. The grid structure is designed according to planar primitive topology subdivision and equichordal face angle method, and adopts a connection method of rigid node construction and rod piece screw jointing, so that the grid structure is few in member category, and light in weight; members are convenient and quick to connect; the construction of the single-layer long-span space grid structure can be accomplished quickly without heavy complicated engineering machinery equipment; and the grid structure is suitable for quick construction of emergency long-span temporary buildings for rescue, relief and medical aid, and suitable for construction support of an underground large-space reinforced concrete shell dome, and large exhibitions or leisure and sports places.

Description

technical field [0001] The invention belongs to the category of civil engineering structure design, and is a novel and conveniently assembled spherical polyhedron grid structure established based on the theory of "summation of chord and plane angles" in topology. Background technique [0002] Spherical grids generally adopt the quadrilateral or triangular configuration of the longitude and latitude method, which has many components, and the stability of the quadrilateral structure is poor. At present, in engineering applications, the spherical grid structure and grid structure method established by the Israeli scholar Hanaor using the geodesic projection method is widely used. It is designed according to the subdivision topology expansion on the spherical surface, and the number of types of spherical grid structure components is obtained. Not optimized. The Israeli scholar Hanaor conducted a systematic study on the single-layer spherical grid. The method mainly includes the...

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Problems solved by technology

[0003] In order to solve the above-mentioned problems in the prior art that there are many types of nodes and rods of the spherical grid structure, the local stiffness of the nodes and the overall stability of the single-layer grid are low, and cannot meet the needs of single-layer large-span, the present invention proposes a method based on The grid structure constructed by spherical polyhedron chord angle and method has fewer types of structural components, simple and convenient construction, and strong firmness

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