Replaceability and Construction Cycles

DYNA Grip^® Stay Cable System

1. Cap
2. Anchor Block
3. Wedges
4. Compression Tubes
5. Ring Nut
6. Bearing Plate
7. Sealing Plates
8. Spacer

9. Compression Plate
10. Strands
11. Recess Pipe
12. Vandalism Protection Pipe
13. Compaction Clamp
14. HDPE-Sheathing
15. HDPE-Sleeve
16. Dead Anchor

Replaceability of Strands

As the PE-coating is pulled directly through the anchorage, an exchange of strands is possible at any time during the service life of the bridge without the need for renewing or replacing any other cable components.

Strand exchange is performed directly at the anchorages
There is no need for moving the cable’s outer stay pipe for accessing the strand bundle either at the deck or outside the pylon – no disruptions to traffic.

Fast Construction Cycles

Lightweight equipment for strand installation and stressing operations is provided by DSI
The use of tower cranes or other lifting equipment can be limited to a minimum
Non-protruding recess pipes at the pylon ⇒ no additional formwork adjustment is required
No exact dismantling of the strand’s outer sheathing is necessary. In case of stressing actions that are additionally required, the strand sheathing is compressed by small tubes in front of the wedges while the strand is pulled through and elongated by the jack.
A compaction clamp, installed after stressing on the strand bundle, keeps the strand in a compact hexagonal pattern.