High-Strength Bridge Support Anchor Clip for Steel Bar Security

• Customization: Available
• Material: Metal
• Usage: Heavy Duty Clamp
• Model NO.: 1-1
• Structure: F Clamp
• Standard: Standard
• Condition: New
• Surface Treatment: True Color
• Strength Level: 10.9
• Use: Imprisonment of Steel Bars
• Applicable Industries: Construction Industry
• Transport Package: Container
• Specification: 1-30
• Trademark: Huilin
• Origin: Handan, Hebei
• HS Code: 0101101010
• Production Capacity: 50000

Product Description

1. Definition and Function

The prestressed flat anchor clip for bridges serves as a crucial anchoring component within the sophisticated prestressed system of bridge engineering. Within these structures, prestressed steel strands are meticulously tensioned to pre-load the infrastructure, thereby significantly enhancing both its load-bearing capacity and resistance to cracking. The clip, expertly designed to interact directly with the steel strand, employs the wedge principle to tightly clamp the strand post-tensioning, effectively anchoring it to the anchor plate and ensuring the maintenance of vital prestress.

2. Structure and Principle

• Structure: Crafted generally in the form of a conical frustum, the clip features a smaller upper section tapering down to a larger base. Its inner hole is meticulously machined with specific shapes, like threads or tapered threads, for a secure and tight engagement with the steel strand. The outer conical surface seamlessly matches the inner conical hole of the flat anchor plate. Some clips are designed with machining slots at the larger end, typically ranging from 3-5mm in depth. The smaller end is fitted with pinholes, installed perpendicularly to the outer wall of the clip, with three pins usually employed.

Principle: Throughout the prestressing process, a jack applies precise tension to the steel strand. Upon reaching the specified design tension, the clip ingeniously wedges inward between the tapered hole in the anchor plate and the steel strand due to the strand's retraction. This mechanism, reliant on the frictional forces between the clip and the steel strand, as well as the clip and the tapered hole, ensures the steel strand is firmly anchored, preserving the essential prestress.

3. Material and performance requirements

Material: Typically constructed from robust alloy steel, these clips boast exceptional strength, hardness, and remarkable toughness to withstand immense stress while resisting brittle fractures and excessive deformation.

Performance requirements: The clips must exhibit reliable anchoring performance, preventing any slipping or loosening of the steel strand. They should also demonstrate superior anti-fatigue performance, enduring the demanding environment of bridges subjected to repeated vehicle and other loads. Additionally, a certain degree of corrosion resistance is essential to prolong their service life.

4. Application scenarios

Primarily utilized in slab structure bridges, especially where prestressed steel strands are to be arranged in a flat configuration, these clips and flat anchorages effectively prevent increased plate thickness due to cable arrangements. They are indispensable in various structures, such as the decks of urban elevated bridges and small prestressed concrete slab bridges.

5. Key points of construction

Pre-installation inspection: It is imperative to thoroughly examine the clip's surface quality, ensuring it is free from defects like cracks or burrs. The fit between the clip and the tapered hole in the anchor plate must be scrutinized for a smooth and tight fit.

Installation process: Accurately position the clip within the tapered hole of the anchor plate, ensuring it is evenly distributed and maintains excellent contact with the steel strand.

• Tensioning operation: Execute operations in strict accordance with the prescribed tensioning program and processes. During tensioning, meticulously monitor the clamp's follow-up to avert issues such as misalignment or jamming. Upon concluding tensioning, rigorously verify the anchoring of the clamps to secure the steel strands reliably.