Difference between Deck Type and Through Type Bridge and their Components

Naveen Choudhary

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DEFERENCE BETWEEN DECK TYPE AND THROUGH TYPE RAILWAY BRIDGES

• Deck-type bridges refer to those in which the road deck is carried on the top flange or on top of the supporting girders.

• Through type bridge - The carriageway rests at the bottom level of the main load carrying members. In the through type plate girder bridge, the roadway or railway is placed at the level of bottom flanges.

Mr. Naveen Choudhary, GEC Ajmer 2 DEFERENCE BETWEEN DECK TYPE AND THROUGH TYPE RAILWAY BRIDGES

Mr. Naveen Choudhary,GEC Ajmer 3 DEFERENCE BETWEEN DECK TYPE AND THROUGH TYPE RAILWAY BRIDGES

Through type deck bridge

Mr. Naveen Choudhary,GEC Ajmer 4 DEFERENCE BETWEEN DECK TYPE AND THROUGH TYPE RAILWAY BRIDGES

Mr. Naveen Choudhary,GEC Ajmer 5 DEFERENCE BETWEEN DECK TYPE AND THROUGH TYPE RAILWAY BRIDGES

Mr. Naveen Choudhary,GEC Ajmer 6 Through Type Bridge

Mr. Naveen Choudhary,GEC Ajmer 7 Through Type Bridge

Mr. Naveen Choudhary,GEC Ajmer 8 Through Type Bridge

Mr. Naveen Choudhary,GEC Ajmer 9 Deck Type Bridge

Mr. Naveen Choudhary,GEC Ajmer 10 Deck Type Bridge

Mr. Naveen Choudhary,GEC Ajmer 11 Deck Type Bridge

Mr. Naveen Choudhary,GEC Ajmer 12 Cross-Section deck type bridge

Mr. Naveen Choudhary,GEC Ajmer 13

Normal span ranges of bridge system

Mr. Naveen Choudhary,GEC Ajmer 14 Normal span ranges of bridge system

TYPE Maximum Span

500 m Steel arch bridge

240 m Steel bow-string girder bridge

1200 m Steel cable suspension bridge

30 m Steel plate girder

10 m Steel rolled beam bridge

180 m Steel truss bridge

Mr. Naveen Choudhary,GEC Ajmer 15

Q. Draw a neat diagram through type plate girder with stringer cross beams, rails, sleeps.

Mr. Naveen Choudhary,GEC Ajmer 16 Stringers

Mr. Naveen Choudhary,GEC Ajmer 17 Q. Through type truss girder bridge with bracing and other arrangement

Mr. Naveen Choudhary,GEC Ajmer 18 Mr. Naveen Choudhary,GEC Ajmer 19 Thank You

Mr. Naveen Choudhary,GEC Ajmer 20