Launching Systems for Pre-Cast Girders Type II
Launching Systems for Pre-Cast Girders Type II
Below is a river bridge being built in Gujarat with the I-Girder Launching methodology
In River Bridge building applications at the launching location HEBENKRAFT provides steel fabricated Launching Truss which is generally 1.6 to 2 times the span length. On the top portion of the truss Hoisting Trolleys which can also be called Launching Trolleys are provided to lift the pre-cast girders. The front side of the truss is projected over the water area and its front portion is rested on the pier top. The Hoisting Trolleys travel on the top of the truss and take the pre-cast girder ahead over the water area towards the piers for launching. The girder is then counter balanced and lowered on the piers with due respects to the alignment and centre distances required. The side shifting is done manually through a hydraulic system. After launching a particular span, we provide an Auto launching system for the entire truss to travel on the launched girders and move forward towards the next consecutive span to be launched. The launching cycle gets repeated till completion of launching of all the spans. The bride building project can be executed speedily compared to the conventional systems due to the automated and motorized system provided. This system is speedy in completion of the bridge building projects over the old conventional
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