Highway Gantry
I. Highway Gantry Structure Technical Specifications
|
Category |
Technical Details |
Performance Standards |
|
Dimensions |
Span: 8-30m Clearance: ≥ 5.5m Column Height: 8-15m |
Safety margin: \ge 0.5\text{m} clearance reserved to prevent vehicle scratching. Tolerance control: Column spacing deviation \le 50\text{mm} |
|
Section Specs |
Beam diameter: Φ 273 - Φ 630 mm (or 300 mm square tube) Column diameter: Φ 325 - Φ 820 mm |
Structural optimization: The columns can be designed with varying cross-sections to enhance their resistance to overturning at the base. |
|
Material |
Main structure: Q345 low-alloy high-strength steel / Q420 (for extra-large structures) Connectors: Q235B steel, thickness ≥ 20 mm |
Yield strength: ≥ 345 MPa (Q345) / ≥ 420 MPa (Q420) |
|
Connection |
Bolts: Grade 8.8 high-strength hot-dip galvanized bolts Bolt specifications: M24 - M36 |
Safety: Ensures connections remain secure in high-frequency vibration environments. |
|
Wind Load |
Design standard: 50-year return period gust wind speed Load capacity: ≥ 0.6 kN/m² (25 - 30 m/s) |
Verification: The structure was validated through finite element analysis (FEA) simulation. |
|
Anti-corrosion |
Base: Hot-dip galvanizing (≥ 85-100 μm) + passivation Enhancement: Optional powder coating (≥ 120 μm) |
Weather resistance: Provides corrosion protection for over 10 years in coastal/industrial environments. |
|
Precision |
Straightness/Perpendicularity: ≤ 1 mm/m Horizontal deviation: ≤ 5 mm after overall installation |
Stability: Extremely high installation precision significantly improves structural fatigue life. |
II. Application Scenarios
Scenario 1: Intelligent Traffic Monitoring and ITS Systems (ITS & Traffic Monitoring)
In the expansion of modern cities in the Middle East and South America, our gantry structures serve as the core carrier for intelligent transportation systems (ITS). The high-strength Q345 steel structure can simultaneously support multiple 4K surveillance cameras, automatic license plate recognition (ALPR) systems, and radar sensors. With an installation accuracy of ≤ 1 mm/m, we ensure the stability of electronic equipment, preventing image blurring or data acquisition errors caused by structural vibrations.
Scenario 2: Cross-Regional Highway Signal Guidance (Interstate Highway Signage)
For cross-border highway construction in Africa and Central Asia, our gantry structures provide an extra-large 30-meter span, covering multiple lanes and emergency lanes. Its clear height of ≥ 5.5 meters fully meets international standards for large freight vehicles. Even in remote desert areas, its hot-dip galvanized coating can withstand extreme temperature differences and wind and sand erosion, significantly reducing future maintenance costs.
Scenario 3: Safety Assurance in Harsh Climatic Conditions (Safety in Extreme Environments)
In coastal areas with high wind loads (such as Southeast Asia and the South American coast), our gantry structures are designed to withstand wind speeds of up to 30 m/s. Combined with reinforced concrete deep foundations (standard size 2m x 2m x 3m), it can effectively resist the overturning moment generated by strong gusts of wind. For highly corrosive environments, the double protection of galvanizing + powder coating ensures the structural safety of the infrastructure in salt spray climates.
