Box Girder Formwork

The steel formwork  is sturdy and durable, and can be reused many times during construction. Simple assembly, fast installation, precise curvature, fixed shape and structure, suitable for buildings requiring a large number of isomorphic structures, high-rise buildings, roads, bridges, etc. The steel box girder of the box girder formwork is a kind of beam in bridge engineering. The interior is hollow, and there are flanges on both sides of the upper part, which are similar to boxes. The steel box girder is generally composed of an outer mold and an inner mold, and the structure of the inner and outer molds is different. B ridge box girder is widely used due to its convenient prefabrication, high rigidity and strong bearing capacity.

Box Girder Formwork Parameter

Features of box girder bridge

The assembly is simple, the template is formed, and the operation is simple.

High stiffness, making the concrete form perfect.

Repeated use many times

Wide range of applications, such as buildings, bridges, tunnels, etc.

Structural Form of Box Girder Formwork

1. Box girders are in the form of end molds wrapping side molds and bottom molds supporting end molds;

2. The side mold and the end mold are connected to each other, adopting the connection form of standard parts, which is convenient for the adjustment of the end mold, and the end mold and the bottom mold are connected by standard parts, which is convenient for folding the end mold;

3. The connection between the side mold and the bottom mold adopts the type of tie rod (arranged according to 2m/channel and connected with the side mold truss, 17 points on one side), standard parts (connected by a frame every 300mm, about 100 points on one side) fastening form, Tighten and adjust the length and strength of the tie rod;

4. When the box girder steel formwork is prefabricated, it is necessary to set the reverse arch in the bottom form, and the reverse arch is adjusted to the design drawing requirements through the steel backing plate between the bottom form and the embedded parts of the beam pedestal;

5. The end formwork is designed with a Z-high section. When the drainage slope is assembled on site, we will grind it according to the needs of the other party. The lower edge of the end is provided with a 20mmx20mm chamfer, which is welded and polished by steel plates (to ensure the appearance of the template) to ensure the straightness of the chamfer. , and also easy to assemble and disassemble the template.

6. The drip groove on the lower side of the flange end of the box girder steel formwork is pressed into a U shape with steel plates, welded and polished on the panel.

Production Requirements of Box Girder Formwork

When designing and manufacturing, it must meet sufficient rigidity strength and stability, and can be reused many times without deformation.

When the bottom mold is processed and manufactured, the deviation between its center line and the design position shall not be greater than 2 mm, and its overall flatness shall not be greater than 2 mm/m.

The bottom mold and the pedestal should be welded firmly.

The side molds should be manufactured in sections, the joints should be tight, the welds should be polished flat, and the flatness of the board surface should be less than 2mm/m, and the misalignment should not be greater than 1mm.

There should be no problems or defects on the contact surface between the formwork and the concrete, including welding scars, pits, burns, etc.

Packaging and Delivery of Box Girder Formwork

Delivery Details: Generally 5-30 days, depending on the quantity.

Packaging Details: Box, Steel Tray, Steel Rack, Container.

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