The fire protection treatment of the steel structure grid structure of sports venues is crucial for ensuring venue safety. Common methods include using fireproof coatings, installing fireproof boards, using fireproof ceilings, and providing structural protection. The following is a specific introduction:

Spray fireproof coating
Ultra thin fireproof coating: The coating thickness is generally below 3 millimeters, which can quickly expand and form a dense fireproof insulation layer when exposed to fire, effectively preventing heat transfer to the steel structure. It has good decorative properties, with a smooth and even surface after drying, and can be color adjusted according to needs, which can blend with the overall decoration style of sports venues.
Thin fireproof coating: The coating thickness is usually between 3-7 millimeters, and the fire resistance limit can generally reach 1.5-2 hours. Its fire prevention principle is similar to that of ultra-thin models, which also uses thermal expansion to insulate heat. This type of coating has strong adhesion and can firmly adhere to the surface of steel structures without easy detachment.
Thick fireproof coating: The coating thickness is 7-45 millimeters, mainly composed of inorganic insulation materials, relying on its low thermal conductivity to slow down the heating rate of steel structures. It has a high fire resistance limit, up to 2-3 hours or even longer, and is suitable for key parts of sports venues with high fire protection requirements.
Install fireproof board
Fiber reinforced silicate fireproof board: made of special processes such as siliceous materials, calcareous materials, and fiber materials, it has good fireproof performance and a fire resistance limit of 2-4 hours. It has high strength, light weight, easy installation, and can be directly fixed on the surface of steel structure grids, effectively isolating flames and heat.
Rock wool fireproof board: Made mainly from natural rocks and melted at high temperatures, it has excellent thermal insulation, sound insulation, and fire resistance properties. It has good hydrophobicity, which can effectively prevent water infiltration and prevent steel structures from being affected by moisture and corrosion. It can be cut into different sizes and shapes according to needs, and is suitable for various complex shaped grid structures.
Set up fireproof ceiling
Light steel keel fireproof gypsum board ceiling: Using light steel keel as the skeleton, install fireproof gypsum board. When fireproof gypsum board encounters fire, the crystal water in the core of the board will evaporate and absorb heat, delaying the temperature rise of the gypsum board and protecting the steel structure grid. This ceiling system has good integrity and stability, and can effectively block flames and hot air from spreading upwards.
Fiber reinforced cement board ceiling: made of materials such as cement and fibers, it has high strength and good fire resistance. Its surface can be decorated in various ways to meet the aesthetic requirements of sports venues, while also preventing fires from spreading through the ceiling to the grid structure for a certain period of time.
Adopting fire-resistant protective wrapping
Ceramic fiber blanket wrapping: Ceramic fiber blanket has extremely low thermal conductivity and good high temperature resistance. It can be directly wrapped around steel structure truss members and fixed with metal wire or high temperature resistant tape. It can effectively isolate heat, protect steel structures from maintaining low temperatures in a fire, and has a certain degree of flexibility to adapt to the deformation of grid structures.
Fireproof glass wool wrapping: After special fireproof treatment, glass wool can be used for wrapping steel structures. It has excellent thermal insulation and sound absorption properties, which can reduce heat transfer during a fire, slow down the heating rate of steel structures, and also have a certain sound insulation effect, improving the acoustic environment of sports venues.
Perform structural protection
Increasing the thickness of the protective layer: In the design phase, reasonably increasing the thickness of the concrete protective layer of the steel structure truss members can improve the fire resistance performance of the steel structure. Concrete has good fire and thermal insulation properties, which can provide a certain protection time for steel structures in a fire.
Using fireproof and heat-insulating filling materials: For some gaps and holes in the grid structure, fireproof and heat-insulating filling materials such as fireproof sealant and fireproof mud are used to seal them, preventing flames and hot gases from spreading through these channels, thus protecting the steel structure from the impact of fire.