some knowledge concerning the municipal constructions. Brief methods of the building of T-shaped girder
Data:2015-05-13 00:00 Source:http://www. Click:
①The installation of bridge crane: take the advantage of military truss or bailey truss which facility the installation of bridge crane.
②The installation of the girder, gantry crane will be used to lift the T-shaped girder to the flat girder transferring wagon
③5.0km／h，The transferring of the girder: the girder flat tranferring wagon will be draw by truck trolley which travels along the temporary truck constructed with normal standard track gauge, and the travelling speed needs to be controlled at 5.0km per hour for loaded wagon and 10.00km for unloaded, caution for the top site girder transferring, where the track trolley must go after the loaded wagon to offer pushing job instead of drawing.
④1.0m／min。The feeding of girder: the crane traveling upon the crown block of the bridge crane will lift the girder which needs to be installed and travels along the track to the located girder site with a controlled speed of 1.0m/min forward and upward.
⑤The location of the girder: the crane traveling upon the crown blocks of the bridge crane will let the girder fall slowly and shift to the located site transversely. As the shifting track need be set on the top of the front and rear piers, so the lifting jack need be used to jack-up the girder when the girder location work is done to remove the shifting track and relocated the T-shaped girder slowly to the sign of the girder relocated line so that the pedestal screws can fall into the prearranged holes, which announce the accomplishing of the girder location, facility the joint of two T-shaped girders and pouring of solid mortar of the pedestal, which must be prefabricated previously.
⑥the punching of the girder installation machine
⑦The remove of the girder installation machine
the girder installation machine must be removed after accomplishment of the girder installation, short road basement should be remove by the usage of crane or by returning the girder installation machine to the prime installing site to dismantle it contrarily.