Ribbed FRP anchor rod, integrated preparation method and application thereof

By incorporating helical ribs into FRP anchor bolts through an integrated pultrusion-braiding process, a three-dimensional interlocking structure is formed, which solves the problem of weak bonding between the ribs and the matrix, improves anchoring performance and durability, and enables flexible control of anchoring performance.

CN122215821APending Publication Date: 2026-06-16UNIV OF SCI & TECH BEIJING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Filing Date
2026-05-14
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

Existing FRP anchor bolts have poor bonding between the ribs and the substrate, making them prone to detachment. The manufacturing process lacks flexibility, and the anchoring performance cannot be adjusted as needed.

⚗Method used

Ribbed FRP anchors are fabricated using an integrated pultrusion-braiding process. By sandwiching helical ribs in the fiber braiding layer, a three-dimensional interlocking structure is formed. The helical ribs and the fiber network work together to bear the force, avoiding stress concentration.

🎯Benefits of technology

It significantly improves the pull-out bearing capacity and long-term durability of the anchoring system, achieves the original bonding between the ribs and the substrate, and can flexibly adjust the anchoring performance according to engineering requirements.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application belongs to the field of fiber reinforced composite materials and civil engineering reinforcement technology, and particularly relates to a ribbed FRP anchor rod and an integrated preparation method and application. The integrated preparation method is a pultrusion-weaving-ribbing integrated forming process, and the core is that in the weaving process, the fiber specifications of the weaving spindles are differentiated to control some weaving spindles to use high linear density large tow fibers, and the rest to use low linear density small tow fibers for interweaving; the large tow fibers are wrapped, constrained and naturally protruded by the small tow fiber network in the interweaving process, so that the spiral ribs embedded in the internal weaving layer are synchronously and integrally formed. In addition, the method can flexibly regulate the number, angle and height of the ribs. The FRP anchor rod prepared by the method has unique "sandwich embedded" structure, is firmly combined with the rod body, has excellent anchoring performance and can be designed. The application solves the technical problems that the traditional FRP anchor rod rib is easy to fall off and the anchoring performance is not adjustable.
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