Advantages and Applications of GFRP Anchor Bolts

Corrosion Resistance: Applications in Underground Engineering​

In coastal deep foundation pit projects, seawater erosion and saline-alkali components in soil pose significant challenges to the durability of traditional anchor rods. During the construction of a subway station foundation pit in a coastal city, GFRP anchor rods were adopted to replace conventional steel counterparts.
Thanks to their exceptional corrosion resistance, GFRP anchor rods effectively avoided strength degradation caused by corrosion in high-salt, high-humidity environments. Compared to traditional anchor rods, their service life was extended by nearly threefold, maintenance costs were reduced by 40%, and long-term stability of the foundation pit was ensured. This laid a solid foundation for the safe construction and operation of the subway line.

Lightweight: Applications in Complex Terrains
During mountainous tunnel construction, transporting and installing heavy traditional anchor rods often faced logistical challenges. In a highway tunnel project in a mountainous region, GFRP anchor rods—weighing only one-fourth of traditional steel rods—were introduced.
The lightweight nature significantly eased transportation difficulties and reduced construction intensity. The installation efficiency improved by 50%, shortening the project timeline by two months. Additionally, safety risks during construction were minimized, ensuring timely project completion.

Electrical Insulation: Applications in Special Environments
In projects near high-voltage transmission lines or environments prone to electromagnetic interference, anchor rods with high insulation properties are critical. For an urban underground utility tunnel project surrounded by high-voltage cables, GFRP anchor rods replaced traditional metal rods to eliminate electrical leakage hazards and electromagnetic interference.
Post-implementation, electrical safety incidents were reduced to zero, ensuring stable operation of pipelines and safeguarding maintenance personnel.

Conclusion
With their corrosion resistance, lightweight properties, and excellent insulation, GFRP anchor rods demonstrate significant advantages across diverse engineering scenarios. They are increasingly becoming a mainstream choice in structural reinforcement, offering innovative solutions for modern construction challenges.