On the San Antonio "Y" bridges the surface drainage from the top of the bridge was carried in ducts cast into the cantilever wings of the box girder
, to the interior of the box and finally discharged through the piers into a storm drainage system.
In order to determine the reliability of reinforced concrete box girder
bridges, three viaducts were chosen in which the flow of moving heavy transport varied from 285 to 332 vpd (Fig.
The normal stress, shear stress and principle tensile stress in the box girder
cross-section of Xintan Bridge is calculated and analyzed by the space frame lattice model.
Selected Bridge Description: A cast*in*place three span continuous box girder
bridge was selected having a total length of 150 m.
the bridge girder span length ranges from 20 to 60 m for both I and box girder
The high torsional strength of box girder
makes it particularly suitable for sharp curve alignment so as to accommodate to topography along traffic lines, skewed piers and abutment, superelevation, and transitions such as interchange ramp structures.
cranes have a light weight-to-span length ratio, engineers note.
Segmental construction techniques will be required to support the designs created for the bridge, and sources suggest a 1,400m segmental twin box girder
bridge will be installed on the Deira side of the project.
Designs for the bridge mean that a segmental construction technique will be necessary, with a 1,400m segmental twin box girder
bridge on the Deira side of the project.
For the suspended portions, the deck superstructure is a box girder
of a triple-cell steel box; prestressed twin-cell boxes are used for the sections over the piers.
The box girder
with a closed cross-section, which has better global behaviour, larger torsion stiffness and an effective top and bottom concrete flange in compression, is widely used in large bridge structures.
It is a pre-stressed post-tensioned balanced cantilever box girder
bridge with a total length of 1116 feet.