The box beam has the same cross-sectional shape as a normal box, and is composed of a cover plate, a web plate, a bottom plate and a partition.
Because the Box beam is shaped like a box, it is called a box beam. The materials of box beam mainly include reinforced concrete, steel and so on.
Box girders are mainly used in building bridges. When the span of the bridge is large, the box girder is the best structural form.
The closed thin-walled section of the box girder has a large torsional stiffness, which is especially beneficial for curved bridges and bridges constructed with cantilever. Both the top and bottom plates have large areas, can effectively resist positive and negative bending moments and meet the needs of reinforcement, and have good dynamic characteristics and small shrinkage deformation values.
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