The joints and installation construction methods of cable-supported pentagram and hexagonal grid single-layer reticulated shells

Abstract

The invention discloses a joint of a cable support pentagonal and hexagonal grid single-layer reticulated shell and an installation and construction method for the single-layer reticulated shell. The joint comprises a bottom plate, a cover plate, a middle circular tube and an internal Y-shaped stiffening rib. The internal Y-shaped stiffening rib is adopted when necessary, and the cover plate is formed by cutting a circular plate and welded to the middle circular tube. Circular holes are formed in the corresponding positions where the middle circular tube is connected with inhaul cable so that inhaul cable ends with threads can penetrate into the joint from outside to inside, the inhaul cables are screwed up through nuts inside the joint, and prestressing force is applied to the inhaul cables. The installation and construction method for the single-layer reticulated shell constructed on the basis of the joint is carried out according to the following steps that components, rod pieces and the inhaul cables of a joint body are machined and manufactured in a factory firstly, then the joint body and the machined reticulated shell rod pieces are constructed and installed, the inhaul cables are installed, the nuts are tightened up, prestressing force is applied to the inhaul cables, and finally the cover plate and the middle circular tube are welded together. The joint of the form has the advantages of being reasonable in stress, simple in structure, convenient to machine, construct and install and the like.

Description

technical field [0001] The patent of the present invention relates to the nodes of a single-layer reticulated shell supported by cables and the installation and construction method of the reticulated shell, belonging to the field of building steel structures. Background technique [0002] As one of the main structural forms of long-span spatial structures, the single-layer reticulated shell structure has reasonable force and beautiful architectural shape, and has been widely used in the world. The basic unit of a single-layer reticulated shell is a polygonal grid, mainly in the form of triangles, quadrilaterals, pentagons, hexagons and other grids. Compared with other polygonal mesh division forms, triangular mesh has the most superior mechanical properties such as stability and stiffness, so most single-layer reticulated shells adopt triangular mesh form. Compared with triangular meshes, the stability and in-plane stiffness of other polygonal meshes are poorer, so the sing...

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Problems solved by technology

Compared with triangular meshes, the stability and in-plane stiffness of other polygonal meshes are poor, so the single-layer reticulated shell engineering applications of other polygonal meshes are relatively seldom

At present, some quadrilateral grid single-layer reticulated shells have been built, but there are no large-scale pentagonal and hexagonal grid single-layer reticulated shell projects.

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