| Application: | Steel Bridge |
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| Type: | Heavy |
| Standard: | GB, ASTM, JIS, BS |
| Trademark: | Quality Carbon Structural Steel and Alloy Structural Steel, FASEC |
| Forming: | Cold Drawn Steel |
| Connection Form: | Welded Connection |
| Customization: |
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Audited Supplier The section shape of the box beam is the same as that of the usual box section, so it is called a box beam. It is generally composed of a cover plate, a web plate, a bottom plate and a partition plate. Mainly used for large span or load-bearing structures.
When the span of the bridge is large, the box girder is the best structural form, and its closed thin-walled section has high torsional rigidity, which is especially beneficial for curved bridges and bridges with cantilever construction. The top and bottom plates have large areas, can effectively resist positive and negative bending moments and meet the needs of reinforcement, with good dynamic characteristics and small shrinkage deformation values.
The box-shaped section has good bending and torsional properties. The top and bottom plates of the box-shaped section are the main parts of the structure to provide bending resistance. The web of the box girder mainly bears the bending shear stress of the structure and the main tensile stress caused by the torsional shear stress.
Compared with the solid web beam of the same section, it has light weight, less consumables and good bending resistance.
Specification
| Item Name | Seismic Performance Heavy Steel Grid Structure Fabrication for Large Venue Roof Structure |
| Main Steel | Steel structure--Q345b/Q355b, special high tension plate, etc. can be customized according to customer's requirements. |
| Surface | Hot Dip Galvanized, or according to customer's requirements. |
| Connection method | welding connection or bolt connection, etc. |
| Column and Beam | Welded H section, Hot Rolled Section Steel, grid column, pipe&tube column,etc. |
| Service |
Design, Detailing, Fabrication and Installation We also can process/fabricate according to client's sample or drawings.) |
| Making quotation according to customer's drawing or as per customer's dimension and requirement; Offering a free preliminary design drawing(formal complete design need to be paid [high-quality, low-cost] ). |
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| Packing | We possess the unique most professional and best packaging in China presently - framing package, which perfectly protects the structural steel members from any impact damage during the transport. Or according to customer's requirement. |
| Load into 40/20GP, 40HQ, 40OT or Bulk carrier |
Application:
Box girder is widely used in bridge engineering, and its shear lag effect is a problem that must be considered in design calculation. Affected by the shear lag effect, the stress distribution of the upper and lower flange plates of the box girder is very uneven along the plate width. Usually, the stress near the web is the largest, and its value is much larger than that calculated by the elementary beam. .
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Audited Supplier 
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