Grid structure is also a type of steel structure, mainly a form of spatial grid structure. Grid structure is generally made of steel pipes and spherical nodes. Relying on the force of the steel body itself, the steel columns are connected together with bolt balls, and staggered to support each other to form roof spaces of various shapes. Many large stadiums, industrial plants, theaters, waiting halls and other roof structures like to use this structure.
The advantages of grid structure are mainly reflected in the following aspects:
1. The structure is stable and suitable for large-span structural roof systems. The force transmission path is simple, the force is reasonable, the material is saved, and the overall performance is good. And the rigidity is large and the seismic performance is stronger. It is especially suitable for ultra-large span steel structure buildings.
2. Easy construction and installation. There are few types of grid rods and nodes, and the size is not large. Transportation, storage, loading and unloading, and assembly are relatively convenient.
3. The grid has a flexible plane layout and a flat roof system, which is conducive to the installation of suspended ceilings, pipes and equipment.
4. The structure is light in weight, especially for large-span structures, which can save 5%-20% of steel compared to the same span flat steel roof.
5. The grid structure is more beautiful and comfortable, which brings inspiration to architects’ design and creation, and adds an artistic atmosphere to modern buildings.
6. The grid structure adopts bolt ball connection, which does not require drilling, can save a lot of manpower and time, and the materials can be more fully utilized.
What are the disadvantages of the grid structure?
1. The requirements for welding the grid bolt ball are high, and the welding ability will also cause brittle damage to the overall structure, which will reduce the stable bearing capacity of the grid, and the deformation will also affect the quality of the entire project, and the cost of correction is also very high. The installation accuracy requirements are high, so the installation difficulty is relatively large.
2. The design is complex, and the calculation and design of the grid structure are relatively complex, which will increase the design difficulty and cost.
3. The cost is high, the amount of steel used is large, and the processing and installation costs are relatively high, so the overall cost is relatively high.
4. Difficult maintenance: Due to the complex structure of the grid and the fact that it is mostly used at high altitudes, the difficulty of inspection and maintenance is relatively increased, which increases the difficulty and cost of maintenance.
Of course, the grid structure is not suitable for all types of buildings. When choosing a grid structure, you should consider the building needs and budget. Of course, if the design is flawless, the processing and installation quality is relatively guaranteed, and the budget is reasonable, the service life of the grid structure is still relatively long. It should be noted that during use, attention should be paid to maintenance and continuous anti-corrosion work.