PSM construction
PSM construction
PSM construction
PSM(Precast Span Method)
- Existing method : 3m of concrete box girders are made in casting bed for the superstructure work for PSM bridge, and 20 of them are connected at the construction site
- For high-speed railway construction 25m length of box girders are produced in a factory, and transported to the construction site with special conveyor to be installed. In this way the best quality and reducing construction period can be possible through factory production and mechanized construction, which also provides a chance to step up domestic construction level.
Continuous welded rail manufacturing sequence
- Assemble reinforcing bar cage
- Complete movement to placement site
- Install internal mold
- Assemble upper part slab reinforcing bar
- Operate jack for pre-tensioning
- Concrete casting
- Curing
- Withdraw internal mold
- Cut after de-tensioning
- Lifting
- Transport PC box
- Mount PC box
