High Stability Steel Box Structure Girder Bridge Heavy Load
Capacity
Box Girder Bridge is a bridge where the key beams consist of
girders shaped like a hollow box. Box girders comprise structural
steel, pre-stressed concrete, reinforced concrete or composite of
steel. Such girders are used for footbridges, railway bridges and
highway bridges. Box girders are mostly used for long span bridges
where the actual self weight of the bridges has to keep minimum.
They are also used for situations that require high torsional
stiffness of box girders.
Steel box girder bridges are commonly used for highway flyovers and
for modern elevated structures of light rail transport. Although
normally the steel box girder bridge is a form of beam bridge, box
girders may also be used on cable-stayed bridges and other forms.
| Product Name | Box girder bridges |
| Width | Single lane, double lanes, or customized |
| Steel grade | Q345B (equivalent to ASTM A572) |
| Loading capacity | 20ton, 40ton truck etc, or HS20-44, HS25-44/Truck 20 |
| Corrosion | Painted or Hot dip galvanized |
| Advantages | Price effective and technical full analysis and supports |
Facts about box girders
A box girder comprises two concrete slabs — top and bottom. The
slabs are connected by an array of vertical bridge stems, also
known as webs. These webs can be vertical or inclined, as per your
requirement.
Box girders are formed by joining two web plates by a common flange
at both the ends. And this makes a closed cell that has enough
strength and torsional stiffness than that of an open section. And
this is the reason for choosing box girders.
Box girders are not generally used for construction of buildings.
However, they might be required in certain circumstances like when
the loads are carried eccentrically to beam axis.
Advantages of box girders
Reduce the requirement for support points
Have high strength and torsional stiffness that give greater and
better suitability for horizontally curved bridges
Ensure enhanced durability
Require minimum maintenance of simple protective coatings as these
have less exposed surface and only a few edges
Our highly trained professional team of engineering and
production focus on your steel bridge project details and
success, from start to finish. Our proven ability to identify and
overcome design inconsistencies, potential problems with erection,
and shipping obstacles results in the fabrication of structural
steel that is right the first time, helping you avoid costly
construction delays.
