Ultra-high performance concrete pile
By uniformly distributing metal fibers and steel reinforcement cages within the UHPC concrete pile body, the problem of insufficient bending resistance of UHPC pipe piles is solved, achieving improved high bending performance and corrosion resistance, making them suitable for marine engineering.
CN224549098UActive Publication Date: 2026-07-24JIANHUA CONSTRUCTION MATERIALS (CHINA) CO LTD
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Patent Information
- Application Number
- CN202521669960.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-24
- Estimated Expiration
- 2035-08-07
AI Technical Summary
Technical Problem
In existing UHPC applications of pipe piles, the uneven distribution of metal fibers within the pipe piles leads to a significant reduction in bending resistance.
Method used
The UHPC concrete pile body uses uniformly distributed metal fibers, especially copper-plated steel fibers or stainless steel fibers, with a dosage of 2.1%~4% v/v. At least 80% of the fibers are evenly distributed along the pile body axis, combined with the steel reinforcement skeleton to form a dense structure.
Benefits of technology
The bending performance of UHPC pipe piles has been improved, with crack resistance bending moment increased by more than 90% and ultimate bending moment increased by 38%, meeting the corrosion resistance and load-bearing requirements in marine environments.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model provides an ultra-high performance concrete pile, which relates to the technical field of concrete piles and comprises an ultra-high performance concrete (UHPC) pile body and metal fibers positioned in the UHPC pile body, the doping amount of the metal fibers is 2.1%-4% v / v; at least 80% of the metal fibers are evenly distributed in the axial direction of the UHPC pile body. And corrosion to the inner wall of the pile caused by invasion of seawater or underground water can be prevented. The UHPC concrete is high in compressive strength, the metal fibers in the pile body are evenly distributed in the axial direction of the pile body, and the axial tensile strength of the UHPC concrete can reach more than two times that of common C80 concrete through the high fiber mixing amount. Compared with a PHC pipe pile, the anti-cracking bending moment of the UHPC pipe pile is improved by more than 90%, and the ultimate bending moment is improved by more than 38%. The technical problems that in the prior art, when UHPC is applied to tubular pile production, the UHPC is not evenly distributed in a tubular pile due to the metal fiber characteristic, and the bending resistance of the UHPC can be greatly reduced are solved.
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