Steel Structure Bolt Ball Grid Mall

The fire resistance of steel structure bolt ball grid in shopping malls depends on multiple factors, including material selection, fire protection design, and the use of fire-resistant coatings. Overall, the steel structure bolt ball grid has good structural performance, but its fire resistance requires additional treatment. Here are some key points:

The characteristics of steel itself: Steel has good load-bearing capacity, but its strength will significantly decrease under high temperature conditions. When the temperature exceeds 200 ° C, the strength of the steel begins to weaken; When the temperature reaches 500 ° C, the strength of the steel decreases by approximately 50%. Therefore, in the event of a fire, effective fire protection measures need to be taken for steel structures.

Deformation at high temperatures: Steel structures are prone to thermal expansion and deformation during fires, which may lead to structural instability and affect safety. Therefore, the fire protection design of steel structure bolt ball grid in public buildings such as shopping malls is particularly important.

Fireproof coating: In order to enhance the fire resistance of steel structures, fireproof coatings are usually applied to the surface of steel structures. The fireproof coating can form a protective foam layer in a fire, effectively retard the temperature rise of steel structures, and maintain the strength and stiffness of steel.

Types of fireproof coatings: There are various types of fireproof coatings on the market, including intumescent coatings and water-based fireproof coatings. Expansion type coatings can expand at high temperatures, forming a thermal insulation layer, effectively reducing the rate of temperature rise of steel in fires.

Fire protection design level: Based on the scale and usage nature of the shopping mall, the fire protection design requirements for steel structures will be set according to relevant building fire protection regulations during the design process. In some high-rise shopping malls or crowded places, the fire protection requirements for steel structures are usually high, and the thickness of fireproof coatings may be required to meet certain standards.

Fire compartment: In shopping mall buildings, steel frame structures are usually designed as fire compartments to ensure effective control of the spread of fire in the event of a fire. The design of fire compartments can utilize measures such as firewalls and sprinkler systems to reduce the impact of fires on steel structure grids.

Shopping malls are usually equipped with automatic sprinkler systems (sprinkler systems). This system can be activated promptly in the early stages of a fire, spraying water mist or water column to quickly reduce the temperature of the fire source, thereby protecting the steel structure from excessive heat damage.

In addition, the mall will also be equipped with fire extinguishers, fire alarm systems, evacuation routes and other fire-fighting facilities to ensure that in the event of a fire, personnel can be quickly evacuated and the fire can be extinguished in a timely manner.

Fire resistance design: The application of steel structure bolt ball grid in shopping malls must comply with national and local building fire protection regulations. According to relevant standards such as the "Code for Fire Protection Design of Buildings" (GB50016), the fire protection design of steel structures can be divided into different levels, and strict requirements are usually imposed on key structural parts such as grid girders, columns, etc., to ensure that sufficient bearing capacity can be maintained in the event of a fire.

The fire resistance of steel structure bolt ball grid in shopping malls depends heavily on the design, material selection, and fire prevention measures taken during the construction process. Although steel itself may lose some strength at high temperatures, its fire resistance can be effectively improved by using fire-resistant coatings, installing sprinkler systems, and reasonably dividing fire zones. Ensure that the steel structure grid can maintain sufficient stability in the event of a fire, ensuring the safety of the building and the evacuation of personnel.

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