Classification of bridges

Classification of bridges

1. Bhagwan Mahavir College of Engineering and Technology PRESENTATION ON Department of Civil Engineering CLASSIFICATION OF BRIDGES

2. Prepared by : Ankit Gangani 140060106055 Guided By Subject Code : 2160603 Semester : 6 th Civil-A RAILWAY-BRIDGE & TUNNEL Mr.Kuldeep Jadeja Asst.Prof.

3. CLASSIFICATION OF BRIDGES

4. 1. Timber Bridge: 2. Stone Masonry Bridge 1. Based on the material used: SOURCE: GOOGLE IMAGES

5. 3.Rcc Bridge 4. Steel Bridge SOURCE: GOOGLE IMAGES

6. 5. Prestressed concrete 6. Composite Bridge Bridge SOURCE: GOOGLE IMAGES Pamban road bridge- tamilnadu

7. 1. Straight Alignment: When the alignment of bridge is perpendicular to the centre line of a river, it is called straight bridge. 2. Skew Bridge: When the alignment of a bridge is not perpendicular to the centre line of river, is called Skew Bridge. 2. As per the alignment:

8. 1.Deck Bridge: When the bridge flooring is provided at the top of the super structure, it is called deck bridge. 3. As per the location of bridge flooring: SOURCE: WWW.CIVILDIGITAL.COM

9. 2. Through Bridge: When the bridge flooring is provided at the bottom of the super structure, it is called Through Bridge. 3. Semi-Through Bridge: When the flooring is located at some intermediate level in the super structure, it is called Semi-Through Bridge.  Bayonne Bridge-new york Chaotianmen Bridge  -china

10. 1. Aquaduct : It is small bridge constructed over a stream which remains dry for most part of the year is called aquaduct . 4. Based on purpose: SOURCE: WWW.CIVILDIGITAL.COM

11. 2. Viaduct: It is a long continuous structure which carries a road or railway like bridge over dry valley composed of a series of spans trestle bents instead of solid piers. 3. Grade separator: When two roads crosses each other and there is considerable differences in their formation level, a bridge structure is constructed , which is known as grade separator. 4. Highway Bridge: It is constructed on a roadway for the movement of vehicles. Panval Viaduct, India Koyambedu grade separator, Tamilnadu , India. Eastern Peripheral Expressway India

12. 5. Railway Bridge It is constructed for the railway. 6. Foot Bridge A foot bridge is a bridge exclusively used for carrying pedestrians, cycles and animals. 7. Pipe Bridge It is used to support pipeline for water, gas, oil, etc.

13. 1. Slab Bridge: When the span of bridge is 3 to 6m, slab bridge is used, It is also called culvert. 2. Girder bridge: When the span of a bridge is more, flooring is supported on RCC or steel girder. Such type of bridge is called girder bridge. 5. based on type of superstructure:

14. 3. Truss Bridge When the flooring of a bridge is supported over steel trusses it is called truss bridge. Normally such type of bridges are used for railways. SOURCE: WWW.CIVILDIGITAL.COM

15. 4. Suspension Bridge: Suspension bridges consists of sets of cables hanging in a curve from which the roadway is supported. A flooring load is transferred suspenders and cables to the piers. Narmada bridge

16. 5. Arch Bridge: In such type of bridge the weight of flooring is transferred to the piers through the arch. the floor beam is suspended trough hangers from arch. SOURCE: WWW.CIVILDIGITAL.COM

17. 1.Submersible bridge or causeway: A road causeway is a pucca dip which allows floods to pass over it. It may or may not have openings or vents for low water to flow. 2. Non-Submersible bridge: In this types of bridge formation level is kept above the HFL, so that maximum flood does not affect the traffic on the bridge. 6.According to h.f.l .:

18. 1. Simply supported Bridge: When the bridge girders are simply supported on piers, it is known as simply supported bridges. 2. Continuous Bridge: When the super structure of a bridge is continuous over more than two supports, it is called continuous bridge. 7. According to type of span: SOURCE: GOOGLE IMAGES Glenn L. Jackson Memorial Bridge,USA

19. 3. Cantilever bridge: A cantilever bridge is formed of cantilevers projecting from the supporting piers. The ends of a cantilever bridges are treated as fixed. 4. Balanced cantilever bridge: A balanced cantilever bridge consists of spans simply supported over cantilever. Forth Bridge, United Kingdom ,  Edinburgh ,

20. 1. Culvert - span up to 8m. 2. Minor bridge – span 8 to 30m. 3. Major bridge – span 30 to 120m. 4. Long span bridge – span above 120m. 8. According to span length:

21. 1. Swing bridge: In case of swing bridge a central pier is provided with suitable bearing or rollers. The super structure consists of a pair of steel trusses and it can be rotated in a horizontal plan about vertical axis. 9. According to navigation facility: SOURCE: GOOGLE IMAGES Lake Okeechobee LAKE, FLORIDA, UNITED STATES

22. 2. Bascule bridge: In case of bascule bridge, the entire structure is rotated in a vertical plane about a horizontal axis. Lowestoft

23. 3. Traverser bridge: In case of traverser bridge, it is so arranged that the whole bridge can fully or partially be rolled forward or backward across the openings. 4. Lift bridge: In this type of bridge the truss is lifted up. 5. Transporter bridge: In case of transporter bridge, a moving cage is suspended from an overhead truss with the help of cable or wire ropes.

24. Temporary bridge: a. pontoon bridge- KUMBH MELA b. boat bridge : COLKATA-RABINDRANATH SETU c. flying bridge- West India Quay 10.According to life of bridge:  London, UK

25. 2. Permanent bridge: a. RCC bridges b. masonry bridges -Rajasthan c. steel bridges : Surat tapti river 10.According to life of bridge

26. 1. Class AA bridge – Narmada cable bridge 2. Class A bridge 3. Class B bridge 11. As per loading

27. thank you