Standard Requirements: According to GB 50981-2014, the spacing of seismic bracing must meet the following conditions:
Horizontal pipes: Spacing should not exceed 12 meters, and each horizontal pipe section must have at least one seismic brace.
Vertical pipes: Spacing should not exceed 24 meters, and each vertical pipe section must have at least one seismic brace.
For heavier equipment or pipes, the spacing should be appropriately reduced, typically 1.5 to 3 meters.
Influencing Factors:
Pipe Material: Spacing can be slightly larger for metal pipes, while spacing should be reduced for non-metallic pipes (such as PVC).
Seismic Intensity: Spacing should be reduced in high-intensity areas (e.g., 8 degrees or above).
Pipe Diameter: The larger the diameter, the smaller the spacing.
Typical Scenarios:
Ordinary water pipes: Spacing is typically 3 to 6 meters.
Fire protection pipes: Spacing is typically 1.5 to 3 meters.
Air ducts: Spacing is typically 3 to 4.5 meters.
Installation Precautions:
The bracket must be fixed to a load-bearing structure, avoiding fixing it to lightweight partition walls.
A certain gap must be left between the bracket and the pipe to prevent the effects of thermal expansion and contraction.
A seismic performance test must be conducted after installation to ensure compliance with specifications.
Extended Knowledge:
Seismic bracing is not only used for pipes but also for cable trays, air ducts, and other equipment.
The design of seismic bracing must consider dynamic loads to ensure effective equipment fixation during earthquakes.
Common materials for seismic bracing on the market include hot-dip galvanized steel and stainless steel. Hot-dip galvanized steel is widely used due to its superior corrosion resistance.
