Clean the bottom formwork and apply the release agent → Install the beam bottom and web reinforcement → Spot weld the positioning reinforcement of the prestressed beam → Install the corrugated pipe and wear the plastic pipe → Erect the side formwork → Install the internal formwork → Install the roof reinforcement → Pouring the beam bottom concrete → Pouring the web concrete → Dismantling and curing → Prestressing tensioning → Hole grouting → Moving the pit.

The bottom formwork is wrapped with angle steel on the concrete foundation of beam pedestal, and the top surface is paved with 6mm thick steel plate, and the side formwork is made of 6mm thick steel plate and section steel, so as to ensure accurate geometric dimensions, smooth surface, accurate shape, no slurry leakage, sufficient rigidity, tight joints and convenient folding.

Extended data

The pre-construction of the prefabrication yard includes: site leveling (this section of subgrade must be dug and filled because it is built on the contract section), site rolling, site hardening, road laying, beam pedestal, track, gantry assembly, and customized processing of box girder forming steel formwork.

Preparatory work for the construction of production and living rooms, the connection of construction water and domestic water, the installation of temporary power supply, the installation of substation equipment, the construction and installation of mixing station, etc. (except for the unified station construction in the contract section).