Flyover bridge

this presentation contains definition,types,components,advantages and drawbacks of flyover.....thank you

1. Flyover Bridge

2. Basic Types Of Bridge What Is Flyover Bridge Types Of Flyover Bridge Components Of Flyover Bridge Merits And Demerits Top Flyovers Of India Conclusion WORK PLAN

3. Suspension Bridge Cantilever Bridge Arch Bridge Truss Bridge Girder Bridge FLYOVER BRIDGE Basic Types Of Bridges

4. What Is FLYOVER BRIDGE

5. It is a bridge that carries one road or railway line above another either with or without subsidiary roads, for communication between the two sides.

6. As the traffic on the road goes on increasing and we don’t have any space left in both the dimensions, then the only option left will be to go to the third dimension and that is done through flyover construction. Reason Behind Going For A Flyover

7. At railway crossing where there is high traffic congestion in terms of the frequency of trains passing by or the traffic on the road, in both the cases the flyover should be provided along the road. Here the flyover becomes indispensable. Railway Crossing

8. Simple Flyovers In this case, the main road is used for fast traffic, which is made to pass at a high level by a bridge, providing ramps on both the approaches; and the slow traffic is made to pass underneath. Thus the traffics pass at two different levels, and leave no chance for an accident.   Road Crossing

9. It requires a very large area of land. All conflicting streams of traffic are avoided, and so traffic can move at its own speed. This is more advantageous than a roundabout, as there is no necessity for weaving and slowing down of traffic. Cloverleaf Junction

10. Components Of Flyover

11. Basic Components SUPER-STRUCTURE : The superstructure consists of the components that actually span the obstacle the bridge is intended to cross and includes the following: Bridge deck Structural members Parapets (bridge railings), handrails, sidewalk, lighting and some drainage features.

12. SUB-STRUCTURE : The substructure consists of all of the parts that support the superstructure. The main components are abutments or end-bents, piers or interior bents, footings, and piling. Abutments support the extreme ends of the bridge and confine the approach embankment, allowing the embankment to be built up to grade with the planned bridge deck.

13. Span: The distance between two bridge supports, whether they are columns, towers or the wall of a canyon. Beam: A rigid, usually horizontal, structural element Pier: A vertical supporting structure, such as a pillar. Contd. Beam Pier

14. Abutment: A structure to support the lateral pressure of an arch or span. E.g. at the ends of a bridge. Bearings: A bridge bearing is a component of a bridge which connects the piers and deck. Approach Slab: It provides a transition between the roadway pavement and the bridge. Parapet: A low protective wall along the edge of bridge. Contd.

15. Merits of flyover Flyovers play a major role in streamlining the traffic control system. Through flyovers plenty of time is saved avoiding congestion. Pollution effect is reduced. Flyovers reduce the risk of accidents Flyovers also contribute a lot to the aesthetics of the city. The persons traveling on the flyover can enjoy the panoramic view of the city. Merits And Demerits

16. Demerits of flyover Flyovers are not as a rule suitable for built up areas as they require a large area and also it is costly. Lack of proper management in the flyover construction may cause many problems. Loss in the case of accidents is increased. The risk of accidents is reduced but in case an accident occurs the loss may be more. As the vehicle is at a high elevation, during accidents there is more chance of losing life. As the people who cannot risk their lives in relying on it are not using it. So, it’s ironical that the flyover has become a liability here instead of an asset for the city.

17. Demerits of flyover Flyovers are not as a rule suitable for built up areas as they require a large area and also it is costly. Lack of proper management in the flyover construction may cause many problems. Loss in the case of accidents is increased. The risk of accidents is reduced but in case an accident occurs the loss may be more. As the vehicle is at a high elevation, during accidents there is more chance of losing life. As the people who cannot risk their lives in relying on it are not using it. So, it’s ironical that the flyover has become a liability here instead of an asset for the city.

18. Kathipara Junction:- Kathipara Junction is an important road junction in Chennai , India . It is located at Alandur , ( St.Thomas Mount), south of Guindy , at the intersection of the Grand Southern Trunk Road (NH 45), Inner Ring Road , Anna Salai and the Mount- Poonamallee Road. Kathipara flyover is the largest cloverleaf flyover in the whole of Asia. Top Flyovers Of India

19. Hebbal Flyover -Bangalore : Bangalore The ‘ Garden city of India ‘ has some of the great flyovers. Bangalore electronic city flyover is the biggest flyover in India. Hebbal Flyover connects connects the Outer Ring Road and Bellary Road and is one of the best double road flyover.

20. We can increase the level of service of road by providing flyover in urban corridors. To satisfy the present and fulfill future demands of the traffic. For orderly movement, left turning and right turning maneuver can be provided. The capacity of road (vehicles per km) can be increased without changing road geometrics. CONCLUSION

21. To provide easy, fast and safe access of public transportation service. To reduce the congestion of traffic in a particular area. To minimize the number of accidents. To reduce the travel time of vehicle or road user. To make a clearance for people walking on the side of the road. Contd.