The way to move the mold frame

1. Section cantilever construction along the top of the pier. This method is commonly used in the general large-span bridge hanging blue construction, which will now be applied to the movable mold frame. Its principle is to use the weight of the continuous beam bending moment characteristic two kinds of resistance, about 0.5L pier top of the first construction of the first negative moment, requires the weight moment is less than the moving frame allowable moment, when section A box beam design strength and casting prestressed beam, from the moving frame block, the weight of the bending moment can be borne by the beam itself, its weight is transferred to the dock through the bearing. The second frame does not move, but only slides the middle positive moment section of the template casting span, and the moving frame can only be assumed. Obviously, in the second cast of the continuous cast reduces the support, greatly reduces the amount of material movement of the mold.

2. The mobile formwork structure adopted in this method is simple, easy to master technology, and can implement flow operation; the frame is very versatile, and the construction unit is standing equipment. When the weight of different concrete box girder, the width and span of box girder roof and bottom plate change, it can be used for construction by adjusting the number of configuration pieces of Berry frame.

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