The steel grid structure is a spatial structure formed by connecting multiple rods through nodes in a certain grid form. The steel grid structure can be divided into double-layer plate-type grid structure, single-layer and double-layer shell-type grid structure. The basic units that make up the steel grid structure are triangular pyramids, triangular prisms, cubes, truncated quadrangular pyramids, etc. These basic units can be combined into flat shapes of triangles, quadrilaterals, hexagons, circles or any other shapes. . It has the advantages of space stress, light weight, high rigidity, and good seismic performance.

Classification of steel grid structure, plate grid structure is divided into three categories:

1. Composed of a plane truss system, there are four types of two-way orthogonal orthographic grid, two-way orthogonal diagonal grid, two-way diagonal diagonal grid and three-way grid;

2. Composed of quadrangular pyramid units, there are five types of positive quadrangular pyramid grids, positive quadrangular pyramid grids, diagonal quadrangular pyramid grids, checkerboard quadrangular pyramid grids and star quadrangular pyramid grids;

3. Composed of triangular pyramid units, there are three forms of triangular pyramid grid, evacuated triangular pyramid grid and honeycomb triangular pyramid grid.

Shell type grid structure is divided into cylindrical shell type grid frame, spherical shell type grid frame and hyperbolic parabolic surface shell type grid frame according to the shell surface form.

The grid structure is divided into steel grids, reinforced concrete grids and composite grids composed of steel and reinforced concrete according to the materials used. Among them, steel grids are more commonly used.

Steel grid structure installation method

Since the advent of the steel grid structure, it has been welcomed by people for its efficient stress performance, novel and beautiful form and quick and convenient construction. In stadiums, convention and exhibition centers, cultural facilities, transportation hubs and even industrial plants that require large spans and large spaces, you can see the traces of spatial structures. It can be used as the roof of buildings such as stadiums, theaters, exhibition halls, waiting halls, stadium stands, hangars, two-way large-column steel grid structures and workshops. Industrial plant applications such as dry coal shed, storage shed, stockpiling plant, average material warehouse, auxiliary material warehouse, and clinker warehouse.

The installation methods of the steel grid structure are divided into two categories: one is the overall lifting method, the overall lifting method and the overall hoisting method assembled on the ground; the other is the high-altitude bulk, strip and block assembly and high-altitude Methods such as sliding in place assembly.