Six methods for installing and using gymnasium grid structures

Gymnasiums are generally used for sports competitions and physical exercises or for holding concerts and performances. Gyms can generally be divided into three categories: large, medium and small. In the gymnasium, you can find that the top or surroundings of the gymnasium are generally decorated with Composed of Steel structure grid supports, large-span grid structures are increasingly used in construction projects. It is a new type of steel structure with reasonable stress, light weight, low cost, lively and novel appearance, and good stability and safety.

The emergence of grid structure has attracted great attention. Its unique appearance highlights the characteristics of human artistic creativity. The grid structure meets people's requirements for life and living environment. It provides people with larger coverage space, so it is used in more and more steel structure engineering constructions, especially in large cultural and sports centers. The structural engineering is all unique.

The installation method of the grid structure should be comprehensively determined based on the structural shape of the grid structure and the local construction technical conditions while satisfying the quality, safety, progress and economic effects. The specific installation methods of the grid structure are: high-altitude Bulk method, strip or block installation method, high-altitude sliding method, overall hoisting method, overall lifting method, overall jacking method; no matter which installation method is adopted, trial assembly and trial installation should be carried out before formal construction to determine After it is correct and meets the design requirements, formal construction can begin.

1. High-altitude bulk loading method

It refers to the method of assembling small units or parts (single rods and single nodes) directly at the designed position. It is suitable for various types of grids with bolted nodes, especially suitable for situations where lifting is difficult. Its construction The key point is to determine a reasonable assembly sequence and control the elevation and axis position.

2. Strip or block installation method

It refers to an installation method in which the grid is divided into strip-shaped or block-shaped units, which are hoisted by lifting equipment to high-altitude design positions and then placed in place, and then integrated into a whole. It is suitable for grids whose stiffness and stress conditions change little after division, such as two-way orthogonal quadrangular pyramids, forward evacuated quadrangular pyramids, etc. This installation method is beneficial to improving the quality of the project and saving most of the assembly brackets.

3. High-altitude sliding method

Refers to the installation method of sliding the divided grid units individually (or one by one) on pre-set slide rails to the designed position and splicing them into a whole. It is suitable for grid racks such as square pyramids with upright placement, square pyramids with evacuation upright, and quadrangular cones with two-way orthogonal placement. When slipping, the slip unit should ensure that it becomes a geometrically invariant system.

4. Overall hoisting method

Refers to the construction method in which the grid is assembled on the ground and then hoisted into place using lifting equipment. The welding work of the overall grid is carried out on the ground to better ensure the construction quality. This method is suitable for various types of grids. It can be translated or rotated at high altitude during hoisting.

5. Overall improvement method

It refers to the construction method of installing lifting equipment on structural columns and lifting the grid assembled on the ground into place. The overall lifting method of the grid can install lifting equipment on the structure to lift the grid, or it can also lift the grid while constructing the column sliding membrane. It is suitable for peripheral support and multi-point support grids, and can be constructed with small machines such as plate lifters and hydraulic jacks.

6. Overall jacking method

It refers to the lifting method of assembling the grid as a whole on the ground at the designed position, and then using a jack to lift the grid to the designed height. Suitable for multi-point support grids with fewer fulcrums.