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ANTEKY Headed Bars Coupler

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ANTEKY Headed Bars Coupler

PRODUCT DESCRIPTION:

Headed bars are reinforcing steel bars equipped with a forged or mechanically attached head at the end, designed to replace conventional straight or bent anchorage details. They are used to develop anchorage through bearing at the head rather than relying on bond length alone.

In heavily reinforced concrete members, traditional straight or bent anchorages often require significant space and can create severe congestion. Bent anchorages, in particular, further complicate reinforcement detailing and installation. Headed bars provide an alternative anchorage solution that simplifies reinforcement layout while maintaining structural performance.

They are widely used in infrastructure, industrial, and nuclear construction projects where constructability and reinforcement density are critical challenges.


Product Details

Benefits


• Eliminates the need for bent anchorage, reducing rebar congestion

• Requires shorter development length compared to conventional anchorage

• Improves concrete flow and compaction in dense reinforcement zones

• Enhances constructability in heavily reinforced structural elements

• Simplifies reinforcement detailing and installation on site

• Reduces handling complexity during transport and assembly

• Improves overall construction efficiency and speed

• Provides reliable anchorage performance through bearing mechanism

• Suitable for complex structural nodes and high-load applications

• Widely applicable in infrastructure, nuclear, and large-scale civil engineering projects



Partial Anchorage HeadFull Anchorage Head
Rebar diameter (mm)16202532401620253240
Thread specificationM20×2.5M24×3.0M30×3.5M36×4.0M45×4.5M20×2.5M24×3.0M30×3.5M36×4.0M45×4.5
D (mm)3848607595556585105130
Head thickness (mm)20253038452025303845
Net bearing area (mm²)8201357212134005498206228664968764111683
Surface ratio (-)4.084.324.324.234.3810.269.1310.139.519.3

  

Applications


As main reinforcement

• Less congestion.

• Easier installation. Threaded heads can be fitted on site after rebar installation.

• No more risk of rebar embrittlement due to bar bending.

• Require shorter anchorage (development) length.

• More faithful realisation of strut-and-tie modeling.

• Better anchorage effectiveness (lower bearing stress and less slip) especially on large diameter bars.

As transverse reinforcement  

• Shear reinforcement in slabs and footings.  

• Cross ties in walls, columns and diaphragm walls.  

• Faster installation time.  

• No more site bending of double-headed 135° or 180° hooks.  

• Allow use of larger bars, therefore decreasing the quantity of links.


    

Beam ends & cantilever elements

Alternative to 180° hooks:Slabs and wall shear links

Punching shear applications

Substitutes long development length

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