A steel strand concrete pile

By setting a steel cage and prestressing components inside the concrete pile and applying prestress using steel strand bundles, the problems of easy cracking and steel corrosion in concrete piles during pull-out are solved, and the overall strength and corrosion resistance of the pile are improved.

CN224468362UActive Publication Date: 2026-07-07广东省第四建筑工程有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
广东省第四建筑工程有限公司
Filing Date
2025-07-11
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Concrete piles are prone to micro-cracks during the pull-out process, leading to steel corrosion. In the current technology, pull-out piles are mainly concrete piles, which have low tensile strength and cannot effectively offset tensile stress.

Method used

A steel cage and prestressed components, including steel sleeves and steel strand bundles, are installed inside the concrete pile. Prestress is applied to the steel strand bundles through a tensioning device, so that the concrete pile is under compression. The prestress is used to offset the tensile stress generated by the pull-out load, and the sealing and corrosion resistance of the steel sleeve are improved by sealing components and sealing filler layers.

Benefits of technology

It reduces cracking in concrete piles, improves overall strength and corrosion resistance, and enhances the pull-out resistance of the piles.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of pile structures, and aims at the problem that traditional concrete piles are prone to cracking under tensile stress, and provides a steel strand concrete pile, which comprises a concrete pile body, a steel reinforcement cage is arranged in the concrete pile body, a prestress assembly is also arranged in the concrete pile body, and the prestress assembly is used for applying prestress to the concrete pile body; the prestress assembly comprises a steel sleeve pipe, a steel strand bundle is arranged in the steel sleeve pipe, a plugging piece is further arranged at the bottom end pipe opening of the steel sleeve pipe, and the plugging piece is used for plugging the gap between the steel strand bundle and the bottom end pipe opening of the steel sleeve pipe; the bottom end of the steel strand bundle is connected to the bottom end of the concrete pile body through a fixed-end anchor, and the top end of the steel strand bundle is connected to the top end of the concrete pile body through a tensioning-end anchor. The application has the effect of reducing the cracking of the concrete pile.
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