In high-voltage backbone transmission systems, the safety and longevity of metal poles are crucial to maintaining grid stability. The following strategies help ensure their long-term performance:
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Use of High-Strength Materials
Select hot-rolled steel that meets ASTM or EN standards (e.g., ASTM A633 GR65) to enhance load-bearing capacity and fatigue resistance. -
Professional Structural Design
Apply modeling and structural analysis based on PLS-CADD and ASCE standards to ensure safety under wind, seismic forces, and ice loads. -
Hot-Dip Galvanized Corrosion Protection
Apply a zinc coating (≥85μm) through hot-dip galvanizing to protect against moisture, acid rain, and industrial atmosphere, extending service life to over 20 years. -
Proper Site Selection and Foundation Engineering
Choose appropriate foundations based on geological surveys—such as rock-embedded or isolated foundations—to ensure pole stability in varied terrains. -
Standardized Installation Procedures
Employ trained personnel for lifting and wiring to avoid structural stress or misalignment during installation. -
Routine Inspection and Maintenance
Conduct regular inspections (annual or quarterly) to detect rust, loosened bolts, or coating damage; perform timely repairs or replacements. -
Effective Lightning and Grounding Protection
Install proper grounding and lightning arresters to prevent lightning strikes from damaging the pole structure.