1.Prestressed anchorage specification and the model meaning
Stressing anchorage like:M22-5 Dead-end anchorage like:QMV.M22-5
M means anchorage , 22 means diamater of stranded wire , 5 means the number of stranded wire
2. The key part material:
work anchorage head and swage socket:45# or 40Cr , work gripper :20CrMnTi
3.hardness: work anchorage head:
20HRC~33HRC work gripper: 78~86HRA
4.static load performance testing:
anchoring efficiency coefficient:ηa≥0.95;total strain:εapu≥2.0%
5.the tensioning device:
YCQQ series jack, ZB4-500 hydraulic pump.