COMPOSITE STEEL PLATE GIRDERS
OPEN WEB GIRDERS
BOWSTRING GIRDERS BRIDGE
STEEL CHANNEL SLEEPERS
COMPOSITE STEEL PLATE GIRDERS
These girders are used in ROBs and railway bridges. After completion of fabrication process these girders are shot blasted, shear connector studs and metalized / painted are efficiently welded on the top of flange.
Sizes:
Flange 140mm to 1200mm, thickness 6mm to 80mm
Web 180mm to 3000mm, thickness 6mm to 60mm
Length 20 mtrs. (Customised sizes are also fabricated as per client specification.)
FEATURES
- Good capacity to carry load in shear, tension and compression
- Members are visible and thinner, factory made, which helps us to predict the girder’s behavior in reasonable manner
- These girders can be replaced easily
- Conveniently amenable to repairs and splicing
- These girders can efficiently carry heavy loads over longer time span with the minimum possible dead weight, leading towards smaller foundation
- As far as urban environment is concerned the limited space of working and traffic congestion is common, steel bridges are the best option which is constructed easily with less disturbances to the people and community.
OPEN WEB GIRDERS
Open web girders are used for track bridges over large rivers and valleys. Standard length of open web girders in railways are 30.5, 45.7, 61.0 and 76.2 meters. Depending on width requirements single and multiple cell girders are selected.
FEATURES
- High torsional stiffness and strength this enables the use of box girders in horizontally curved bridges and interchanges.
- Greater aerodynamic stability.
- Reduced susceptibility to lateral buckling of flanges in lateral-torsional and distortional buckling modes.
- Support point required are less compared to conventional systems.
- Improved durability.
- Reduced maintenance of protective coatings since the exposed surface is less and fewer edges are there and avoidance of exposed horizontal surfaces, no exposed bracing and stiffeners.
- Clean lines of a closed box girder provide better appearance for footbridges where the visual impact counts.
BOWSTRING GIRDER BRIDGE
Bowstring bridge is an arch bridge in which the outward-directed horizontal forces of the arch are borne as tension by a chord tying the arch ends, rather than by the ground or the bridge foundations. This strengthened chord may be the deck structure itself or consist of separate, deck-independent tie-rods.
- Much like a through-truss bridge, except that the truss can be a higher, deeper segmental curve.
- Suitable for 50m – 150m spans.
- Attractive.
- Can be constructed on less robust foundations e.g. atop elevated piers/areas of uneven soil.
- Can be pre-fabricated offsite and hauled or lifted into place.
STEEL CHANNEL SLEEPERS
Steel sleepers have enormous advantages including lower cost and durability and sustain ability compared to wooden sleepers make them an effective technical solution for modern rail network in their state of the art and most modern in house galvanizing facility of steel channel sleepers.
We fabricate mild steel channel sleeper which are used on tracks which are passed through bridges over rivers. These are light in weight and more accurate in dimensions as compare to wooden or concrete sleepers.