Anti-frost heaving device for power transmission tower underground structure and control method thereof

By adopting conical stepped and inverted pyramidal structures on the foundation of transmission towers, combined with segmented reinforcement components and a heating system, the problem of foundation instability caused by frost heave force was solved, thereby improving the stability and pull-out resistance of the foundation.

CN120867345BActive Publication Date: 2026-06-02国网黑龙江省电力有限公司大庆供电公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
国网黑龙江省电力有限公司大庆供电公司
Filing Date
2025-06-20
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In cold, frozen soil regions, the foundations of power transmission towers are susceptible to frost heave, leading to decreased stability. Existing protective measures are insufficient to effectively guarantee long-term safe and stable operation.

Method used

The main body of the tower foundation adopts a conical, stepped, and inverted pyramidal structure, combined with segmented reinforcement components, anchoring components, and a heating system, to improve the stability of the foundation by decomposing frost heave force, anchoring, and heating the soil.

Benefits of technology

It effectively reduces the impact of frost heave on tower foundations, prevents tilting and tower collapse accidents, improves the stability and pull-out resistance of the foundation, and adapts to the dynamic load changes of freeze-thaw cycles.

✦ Generated by Eureka AI based on patent content.

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    Figure CN120867345B_ABST
Patent Text Reader

Abstract

The present application relates to the technical field of power transmission tower support, in particular to a kind of anti-frost heaving device of power transmission tower underground structure and its control method, the anti-frost heaving device of power transmission tower underground structure includes tower foundation main body, tower foundation main body is inserted in soil when installation, tower foundation main body includes upper part and lower part, upper part is conical tower shape ladder structure, and small end is on, so as to reduce and guide horizontal frost heaving force downward, make tower foundation main body more stable, avoid horizontal frost heaving force and push tower foundation main body to skew or cause tower collapse accident, lower part is inverted pyramid structure, each conical side wall of lower part is provided with split reinforcement, split reinforcement is configured to be able to cut soil along radial direction, so as to be able to reduce upward frost heaving force, prevent frost heaving force and pull tower foundation main body out of ground;Each split reinforcement is provided with anchoring assembly, and anchoring assembly is configured to anchor tower foundation main body in soil.
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