Ensure scientific inspection and identification of damage to steel structures post-fire. So, what inspections are required for steel structure components after a fire?

1. Structural Steel Component Appearance Inspection

On-site inspection of the appearance of the main steel structural components, checking for any signs of coating peeling or bending deformation.

2. Component Deformation Measurement

Steel column lateral displacement is measured using a theodolite, while beam deflection is measured with a total station.

3. Component Mechanical Property Testing

Randomly sampled components damaged in the fire were retrieved for laboratory testing of their mechanical properties to determine compliance with the mechanical standards.

4. Structural Calculation and Component Verification

Based on on-site measurements and design drawings, the main structure model of the factory building was constructed, taking into account dead load, live load, wind load, snow load, and seismic load, and it was verified and cross-checked.

5. Authentication and Rating

Based on the structural steel inspection results post-fire, a mechanical analysis of the fire-resistant capacity of steel components was conducted, leading to a specific grading process for the post-fire steel components.

6. Provide key鉴定conclusions, promptly formulate post-disaster response plans for damaged components, repair the main structures in the affected areas, and ensure fire prevention measures during subsequent use.