- First developed by German, main span length between 200m~900m with steel or concrete material.
Key points :
- Slipping or climbing forms method for concrete tower. cantilever, cast-in-situ and pushing method for main girder.
- Pre-stressing of cable depend on cable system and erection method of main girder.
- Cable duct welding, erection, and tendon cutting for installation.
- Stage by stage cable installation and pretension.
- Camber checking and cable force adjustment.