Large Span Steel Box Girder Bridge Temporary Structural Complex Interchange Metal Frame

Description

Steel Box Girder Bridge refers to a beam bridge whose main beam is in the form of a thin-wall closed section. Long hollow trusses made of steel or concrete are usually used as beams. This makes the bridge light and sturdy. Bridges constructed using this method are called Steel Box Girder Bridge. A steel box girder bridge is a bridge in which the main beams comprise girders in the shape of a hollow box. The box girder normally comprises either prestressed concrete, structural steel, or a composite of steel and reinforced concrete. The box is typically rectangular or trapezoidal in cross-section.

Specification

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.

Parts of the bridge
The basic Bailey bridge is made up of three main parts, the floor, the stringers and the side panels. The floor of the bridge is made up of a number of 19-foot-wide transoms (5.8 m) that run across the bridge. Across the bottom of these, forming a square, are 10-foot-long stringers (3.0 m). The bridge's strength is provided by the panels on the sides. The panels are 10-foot-long (3.0 m), 5-foot-high (1.5 m), cross-braced rectangles. Each weighs 570 pounds (260 kg), and can be lifted by six men.

Application
Spans from 3.6m to 31m and more - for highways, railways, pathways, bicycle racks, landscaping, etc
Standardized designs - as per Indian BIS a. RC standards and codes
Heavy live loads with high overfills - capable of supporting heavy freighter aircraft and mining haulers
Smooth approaches - from earth embankments due to soil overfill, does not require any approach slab
Low life cycle costs - traffic runs on overfill and not over an exposed bridge deck
Aesthetic structures - the true arch form is accentuated.

Features
Modular, pre-engineered, pre-fabricated bridge system
Standard interchangeable components
Highly adaptable, fully reusable and re-locatable
Transported in standard ISO containers
Quick and simple to build using labour
Fully galvanized for long life and minimum maintenance
3.048m module length
4.2m single lane
Proprietary steel decking systems to suit different loading requirements
Durbar finish or factory applied anti-skid surfacing
Full highway load carrying capability
Simple, cost effective foundations

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