Coupling anchorage is include: anchor head, swaged end, wedges, protected cover, restraining Ring and spriral reinforcement.
Coupling Anchorages are often used to connect different construction segments into one continuous block. There are 3 types of anchorage: single anchorage, multi-strand anchoragre and square anchorage respectively
Single coupling anchorages are used to connect single cable strands, wedges are used at both ends of each cable strand to hold the anchors in the trumpet connected together through steel plates linked by threaded links
Multi-strand anchoragre (round anchorage and square anchorage) is used to extend multiple cables, with the wedge used at the end of each cable strand will be extended, and pressed the shielded cables to the dead end of another cable, Both cables will overlap and be anchored by the same coupling.
Square coupling anchorage
Round coupling anchorage
1,11. Prestressing ducts 2. Spiral 3. Trumpet 4. Coupling set 5. Dead wedge 6,12. Protected cover 7,8: Bolts 9. Restraining ring 10. Cable.