What is working principle of HZP1600 segmental assembly bridge erection equipment?

Working principle

HZP1600 segmental assembly bridge erection equipment construction condition: full span suspending segments construction

segmental assembly bridge erection equipment

1 positioning

Longitudinal positioning for the complete machine: relative position of front support leg and main frame is unchangeable, as reducing the span, the position of rear support leg moves forward; centre line of support leg is parallel with that of pier.

Transverse positioning: position the complete machine symmetrically by taking bridge centre line as a positioning base.

2 segments suspending construction in one full span

As the bridge erection equipment works, front and rear support legs of bridge erection equipment bear all external force which is transmitted to pier and cushion cap by uprights at lower part of support legs. Concrete steps for girder installation: girder feeding below the bridge­­­­­­­­­→lift girder segments→suspend segments→inaccurate altitude adjustment→paint epoxy resin→accurate positioning→temporary pre-stressed tension→permanent pre-stressed steel cable tension→remove suspending boom→finished

3 longitudinal moving of bridge erection equipment to cross piers

Front and rear support legs move to relevant position automatically to realize the complete machine crossing piers with pushing from longitudinal moving cylinder, the moving on the horizontal curve can be adjusted by lateral moving mechanism on the front and rear support legs as the launching gantry moves forward.

4 transverse adjustment of the bridge erection equipment

Positions for transverse flanges are kept on front and rear support legs to push main frame to move transversely on main girder of support legs.