Bonded Bar Post-Tensioning System

DYWIDAG Anchorages For Bar Tendons


DYWIDAG Bar Anchorages consist of one anchorage body that transfers the load into the concrete and bears against the anchor nut. The anchor nut can accommodate a small angular misalignment due to construction tolerances. DYWIDAG offers other anchor types in addition to the standard configurations described on the following pages. For special applications, please contact one of our offices.

1 - stressing anchorage
2 - sheathing
3 - dead end anchorage

type   Smooth Bar DYWIDAG THREADBAR  ®
steel grade f p0.1k /f pk N/mm² 835/1030 1080/1230 835/1030 1080/1230
diameter/type   32G 36C 26E 32E 36E 26D 32D 36D
diameter mm 32 36 26 32 36 26 32 36
QR-Plate Anchorage        
Solid Plate Anchorage, rectangular  
Solid Plate Anchorage, square          

Splices

DYWIDAG Couplers are used to extend bars to any desirable length. The DYWIDAG Bar Post-Tensioning System uses 3 different connection variations for fixed and movable couplers:

 

 

1. simple coupler

to join bars in the free length and at anchorages

 

 

2. compensation coupler

to bridge different bar end distances for example in free cantilever precast segmental construction

 

 

3. transition coupler

to couple bar tendons of different size or type

Sheathing

Thin-walled flexible metal ducts are used to create the void for prestressing elements. The ducts are threadable along their entire length to allow easy and fast installation on the job site. A larger metal duct is placed in the areas where DYWIDAG Bar Couplers are used. These coupler ducts allow for movement of the coupler during stressing. A full line of grouting accessories services the DYWIDAG Post-Tensioning System Using Bars.


type   Smooth Bar THREADBAR ®
steel grade fp0,1k/fpk N/mm² 835/1030 1080/1230 835/1030 1080/1230
diameter/type   32G 36C 26E 32E 36E 26D 32D 36D
diameter mm32 36 26 32 36 26 32 36
internal diameter I.D. mm44 51 38 44 51 38 44 51
external diameter O.D. mm49 57 43 49 57 43 49 57
min. center distances mm79 92 68 79 92 68 79 92
support distances m 0,5-2,5 0,5-2,5
wobble angle ß °/m 0,3 0,3
friction coefficient µ - 0,25 0,5