Heavy-Duty Prestressed Bridge Clip for Secure Steel Bar Imprisonment

• 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 pivotal anchoring component within the sophisticated prestressed system of bridge engineering. In the intricate world of bridge structures, tensioning prestressed steel strands is a technique of preloading the structure, designed to significantly boost both load-bearing capacity and crack resistance. This innovative clip engages in a direct embrace with the steel strand, leveraging the wedge principle to achieve a tight grip post-tensioning. By anchoring it securely to the anchor plate, it dutifully preserves the essential prestress.

2. Structure and Principle

• Structure: Typically adopting a conical frustum design, this clip boasts a smaller upper section and a broader lower base. The inner hole is meticulously crafted, often featuring threads or tapered threads, to ensure a steadfast engagement with the steel strand. Its outer conical surface is engineered to harmonize seamlessly with the inner conical cavity of the flat anchor plate. Notably, certain clamps possess machining slots at the larger end, with depths ranging from 3-5mm. Additionally, the smaller end is equipped with pin holes, installed perpendicularly to the clamp's exterior, and typically hosts three robust pins.

Principle: In the dynamic prestressing process, a jack exerts calculated tension on the steel strand. Upon achieving the designed tension threshold, the clamp ingeniously wedges inward, nestled between the tapered cavity of the anchor plate and the steel strand, a result of the strand's strategic retraction. Through frictional forces between clamp and strand, as well as clamp and anchor plate's tapered hole, the steel strand is steadfastly anchored, maintaining the vital prestressing.

3. Material and performance requirements

Material: Crafted predominantly from high-grade alloy steel, it exhibits remarkable strength, hardness, and resilience, ensuring it withstands immense stress without succumbing to brittle fracture or undue deformation.

Performance requirements: The clip must exhibit impeccable anchoring reliability, ensuring the steel strand remains secure without slipping or loosening. It should possess superior anti-fatigue characteristics, adeptly enduring the dynamic loads of bridge environments, which include repeated vehicular and other load stresses. Furthermore, a certain level of corrosion resistance is essential to prolong its operational life.

4. Application scenarios

Primarily deployed in slab structure bridges, these clips shine when prestressed steel strands need to be aligned in a flat configuration, eliminating the need for increased plate thickness due to cable arrangements. Their utility is prominently visible in urban elevated bridge decks, compact prestressed concrete slab bridges, and a myriad of similar structures.

5. Key points of construction

Pre installation inspection: Conduct a meticulous examination of the clip's surface quality, ensuring it is devoid of imperfections like cracks or burrs. Verify the compatibility and fit between the clip and the tapered cavity of the anchor plate, ensuring a smooth and secure fit.

Installation process: Accurately position the clip within the tapered cavity of the anchor plate, guaranteeing its even distribution and excellent contact with the steel strand.

• Tensioning operation: Execute operations following the meticulously designed tensioning program and process. Vigilantly monitor the clamp's behavior during tensioning to avert issues like misalignment or jamming. Post-tensioning, rigorously inspect the clamps to confirm the unwavering anchoring of the steel strands.