Repair system for corrosion of photovoltaic concrete pile head

The cylindrical structure repair system, consisting of a self-compacting concrete layer, an anti-corrosion coating, and UHPC segmented ring plates, solves the structural damage problem of photovoltaic concrete pile heads in harsh environments, achieving efficient and stable repair results and improved durability.

CN223607919UActive Publication Date: 2025-11-28HUNAN NAYE ENGINEERING TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202423114741.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2025-11-28
Estimated Expiration
2034-12-17

AI Technical Summary

Technical Problem

In the Gobi Desert and other desert environments, the cement slurry layer of photovoltaic concrete pile heads peels off due to freeze-thaw cycles, alkalization, and wind and sand erosion, leading to structural cracking and damage. Existing repair methods are either inefficient or complex to construct.

Method used

The structure is formed by prefabricated segmented rings using self-compacting concrete layers, concrete anti-corrosion coatings, and UHPC materials. Self-compacting concrete is poured by splicing and filling the cavities, and the anti-corrosion coating enhances the structural durability.

Benefits of technology

It achieves a fast and simple repair effect, improves the stability and bearing capacity of concrete pile heads, extends service life, resists wind and sand erosion, and reduces construction difficulty.

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Abstract

The utility model provides a repairing system for corrosion of a photovoltaic concrete pile head, and relates to the field of photovoltaic concrete piles, the repairing system comprises a self-compacting concrete layer, a concrete anti-corrosion coating and a plurality of blocking ring pieces prefabricated and formed by UHPC materials; the segmented ring sheets and the assembled cylindrical structure integrate the advantages and characteristics of UHPC materials, and have high strength, high toughness, high impermeability, freeze-thaw resistance, chemical erosion resistance and impact resistance; a plurality of block ring pieces prefabricated and formed by UHPC materials are spliced on the outer side of a concrete pile head to be repaired on site to form a cylindrical structure, preferably, the block ring pieces are made into semicircular ring pieces, and two pieces can be spliced into the cylindrical structure, so that the construction difficulty is effectively reduced, the splicing is rapid, and the operation is simple; self-compacting concrete slurry is poured into a filling cavity gap between the cylindrical structure and the to-be-repaired concrete pile head, the slurry is a finished product prefabricated material, and the quality of cast-in-place self-compacting concrete is ensured through field construction; in addition, the concrete anticorrosive coating is coated outside the cylindrical structure made of the UHPC material, so that the durability of the structure is further enhanced.
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