Composite bridge

Composite means that the steel structure of a bridge is fixed to the concrete structure of the deck so that the steel and concrete act together, so reducing deflections and increasing strength.
This is done using shear connectors fixed to the steel beams and then embedded in the concrete. 

1. Composite Deck Bridge Mr. Rupam R. Fedujwar Transportation Engineering School of Infrastructure IIT Bhubaneswar

2. Introduction Composite means that the steel structure of a bridge is fixed to the concrete structure of the deck so that the steel and concrete act together, so reducing deflections and increasing strength. This is done using shear connectors fixed to the steel beams and then embedded in the concrete. 

3. For generating the composite action of concrete and steel shear connector are used. Shear connectors, correctly spaced to resist the loads make the concrete work compositely with the steel .

4. Simple Beam bridge Spans of the simple beam bridge varies from 8m to 24m

5. Used for the longer span from 18m to 100m Over Truss Bridge

6. High efficiency Light weight and Rapid Installation Low maintenance Highly resistant to earthquakes As deck slab are not thick and thus easy to demolish and remove Advantages

7. Disadvantages Damaged or faded materials must be replaced. It is temperature sensitive and expand and contract with temperature variation. High initial cost. With respective to concrete girder the steel girder is more costly. Handling during fabrication is difficult.

8. Thank You