DYWIDAG Threadbar Anchor with Partially Removable Tendon

Free length tendon section can be removed to provide unrestricted access for subsequent works.

Retaining Wall Tieback
Excavation Support
Foundation

Partially removable threadbar anchors allow the free length tendon to be removed. Typically, the free length comprises a single section tendon due to the limitations of coupler diameters. This allows subsequent works such as pile driving, excavation, or tunnel boring to take place.

The free length section can be removed from the bond section after de-stressing by unscrewing it.

This is a tension type anchor, where load is transferred to the bonded length by stressing the free length.

This system is particularly suited to temporary work applications as the free length typically exceeds the bonded length dimension by a significant factor
The location of the bonded length section can be easily adjusted in order to place the bonded length beyond the position of any subsequent works, subject to ground conditions and boundaries
Can be used with the entire Threadbar range to suit common anchor loadings
Load monitoring options and instrumentation can be incorporated with DYWIDAG Removable Bar Anchor Systems for data-driven insights

Main standards for steel nuances

Europe/ Asia/ Latin America: GEWI 500/550 Mpa, GEWI 555/700 Mpa, GEWI-Plus 670/800 Mpa, DYWIDAG Prestressing Steel Threadbar 950/1050 Mpa

UK: GEWI 500/600 Mpa, GEWI-Plus 670/800 Mpa, DYWIDAG Prestressing Steel Threadbar 950/1050 Mpa

North America: Grade 150 DYWIDAG Prestressing Steel

Accessories

Bearing plates with angle compensation
Borehole spacers : lantern or skid
Tremie tubes for borehole grouting (bottom up)
Post-grouting tubes complete with TAM (tube à manchette) valves for bond stress enhancement
Rigid or hinged lifting shackles
Coupler forks for suspending sections within the borehole