We are box girder bridges manufacturers in China,offer all kinds of material box girder bridges, Katalor Box girder bridges steel Material we can offer: Q235B, A36, A283C, SS400, SM400A, S235JR/J0/J2, St37-2, FE360B, E24-2, Q345B, A572Gr.50, SM490B, S275JR/J0/J2, S355JR/J0/J2, St52-3, FE510B, E36-2.
box girder bridges has great torsion rigidity, which makes them ideal for bridges that are highly curved in plan or where construction by launching is required. In addition, they are widely used as the deck elements of cable-stayed and suspension bridges, where the torsion stiffness of a box is important for the dynamics of such long span bridges.
Compared to an I-beam, the advantage of a box girder bridges is that it better resists torsion. Having multiple vertical webs, it can also carry more load than an I beam of equal height (although it will use more material than a taller I beam of equivalent capacity).
Where a large box girder contains more than two walls, i.e. with multiple boxes, it is referred to as a cellular girder.
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