Beijing-style guardrail construction, installation and maintenance specifications

1. Standardized installation process

Foundation construction:

Embedded depth ≥40cm, concrete grade ≥C25

Column spacing ≤2.5m, vertical deviation <3mm/m

Component installation:

The beam and column are fixed with anti-disassembly bolts

The installation height of the reflector is 60-80cm from the ground

2. Solutions to common problems

Problem type Cause analysis Treatment plan

Guardrail tilt Uneven foundation settlement Add diagonal brace reinforcement

Coating peeling Transport bump/corrosion Local grinding and zinc paint spraying

Bolt loosening Vibration caused Regular inspection and replacement of anti-loosening nuts