Bridge Protective Gabion Mesh

Bridge-Specific Protective Gabion Mesh - Fall Prevention / Impact Resistance / Corrosion & Rust Resistance - Highway Bridge / Railway Bridge / Pedestrian Overpass Guardrail Protection Net

II. Product Overview: Addressing Bridge Protection Pain Points in One Sentence

"This bridge protection gabion mesh is specifically designed for guardrails on both sides of bridges, central dividers, pier protection, and high-altitude fall prevention. It is woven from high-strength galvanized steel wire, featuring resistance to vehicle impact, prevention of debris falling, durability against wind and rain corrosion, and adaptability to curved bridge structures. It is suitable for highway bridges, railway bridges, pedestrian overpasses, cross-river bridges, and other scenarios, effectively ensuring the safety of pedestrians and vehicles. Compliant with the 'Highway Traffic Safety Facility Design Specifications,' it is an essential product for bridge safety protection."

III. Core Advantages: Customized Protection for Bridge Scenarios

Tailored to bridge environments (high-altitude strong winds, vehicle impact, rainwater erosion, complex structures), highlighting the fundamental differences from ordinary protective nets:

1. Fall and Impact Resistance, Strengthening Bridge Safety

• Material and Strength: Made of Q355 high-strength low-alloy steel wire (or hot-dip galvanized steel wire), wire diameter 4.0-6.0mm (customizable based on bridge grade), tensile strength ≥600MPa, elongation at break ≥15%. Capable of withstanding lateral impacts from vehicles at 30km/h (equivalent to a small car scraping) and impacts from falling objects (e.g., tools, rocks, weight ≤50kg). The mesh deforms only slightly under force (deformation ≤8%) without breaking, effectively blocking falling objects.
• Weaving Process: Utilizes a "double-twist encrypted gabion" technique, with diamond-shaped mesh openings (common sizes: 4cm×8cm, 5cm×10cm). The mesh surface is tightly interwoven with uniform tension, dispersing force elastically upon impact (50% better impact resistance than ordinary welded mesh), preventing localized tearing and protection failure.
• Fall Prevention Design: Mesh openings are strictly controlled (maximum size 10cm×10cm) to prevent limbs or small tools from passing through. The bottom fits tightly against the bridge guardrail (gap ≤5cm), avoiding debris falling from below.

2. Weather and Corrosion Resistance, Adapting to Complex Bridge Environments

• Surface Treatment: Features dual protection of "hot-dip galvanizing + spray coating" (core process). Zinc layer thickness ≥120μm (hot-dip galvanizing), spray coating thickness ≥0.8mm (outdoor weather-resistant powder, colors available: black, gray, blue, matching bridge guardrail tones). Salt spray test resistance ≥1000 hours, capable of withstanding:
  • High-salt environments of coastal bridges (e.g., cross-river or cross-sea bridges);
  • Erosion from de-icing agents (containing salt) on northern bridges;
  • Long-term exposure to rain, strong winds, and dust. Service life of 10-20 years (compared to 3-5 years for ordinary protective nets), reducing long-term maintenance costs.
• Reinforced Details: Mesh edges feature "steel rope edging + flange fixation." Bolts connecting to bridge guardrails use high-strength anti-theft screws (preventing manual removal). Welding is applied at connections between mesh and columns to avoid loosening from long-term vibrations.

3. Flexible Adaptation, Conforming to Complex Bridge Structures

• Structural Compatibility: The gabion mesh offers excellent extensibility (elongation rate ≥20%), allowing it to bend flexibly along curved bridges (e.g., ramp bridges, arched bridges) and slopes (e.g., bridge approaches), with a conformity rate ≥95%. No cutting or splicing is required, avoiding protection gaps.
• Specification Flexibility: Mesh width ranges from 1.2-2.0m (adaptable to bridge guardrail height), length customizable (standard 50m/roll). Supports multi-panel splicing (seam strength ≥90% of mesh strength), covering needs from narrow pedestrian overpasses to wide highway bridges.

4. Compliance and Safety, Meeting Bridge Engineering Standards

• Regulatory Compliance: Product performance meets the "Highway Traffic Safety Facility Design Specifications" (JTG D81-2017) and "Railway Bridge Protective Fencing" (TB/T 3562-2020). Third-party tested for impact resistance and corrosion resistance, with test reports provided to ensure project acceptance.
• Safety Details: The mesh surface has no sharp protrusions, with edges rounded to avoid scratching pedestrians or vehicles. Connection points are polished smooth to prevent debris from catching during high-speed travel, balancing protection and safety.

IV. Technical Parameters: Supporting Professionalism with Data (Table Format)

V. Applicable Scenarios: Comprehensive Protection for All Bridge Types

• Core Bridge Types and Functions:
  • Highway Bridges / Expressway Bridges: Installed on the outer side of guardrails to prevent vehicles from veering off the bridge and pedestrians from climbing over, while blocking debris (e.g., tire fragments, cargo) from falling below.
  • Railway Bridges: Used for protection on both sides of tracks, preventing debris from falling during train operation and unauthorized entry by pedestrians or animals. Features permeability (no water accumulation) and lightweight design (no added bridge load).
  • Pedestrian Overpasses: Installed at the bottom (fall prevention net) and sides of guardrails to prevent personal items (e.g., phones, backpacks) from falling and injuring people below. Mesh openings allow light transmission without affecting overpass lighting.
  • Cross-River / Cross-Sea Bridges: Suitable for pier protection (preventing boat collisions and abrasion) and isolation around cable towers. Resistant to humid and windy environments, maintaining shape over long-term use.

VI. Service Support: Addressing Engineering Concerns

• Customized Solutions: Based on bridge type (highway / railway), protection location (guardrail / bottom), and curve radius (straight / curved bridges), free customized recommendations for mesh size, wire diameter, and surface treatment are provided, along with CAD installation diagrams (e.g., mesh bending angles for curved bridges).
• Compliance Support: Full set of qualification documents provided (material test reports, impact resistance test reports, bridge specification compliance statements), assisting with acceptance by supervision units and transportation departments.
• Supply Chain Assurance: In-house production capacity of over 800㎡ per day. Standard specifications shipped within 3 days. Supports "sample testing first (1㎡ sample provided), bulk orders after approval." Bulk orders enjoy exclusive discounts for bridge projects.
• Installation and After-Sales: Specialized installation accessories provided (high-strength bolts, fastening clips, anti-loosening washers), with detailed installation manuals (including bridge guardrail fixation and high-altitude operation safety guidelines). Five-year warranty (free replacement for non-human damage), lifelong technical consultation (e.g., maintenance advice).