steel bridges

March 28, 2019 | Author: Bolarinwa | Category: Bridge, Truss, Transport Buildings And Structures, Civil Engineering
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STEEL BRIDGES

PROF. V. KALYANARAMAN Department of Civil Engineering Indian Institute of Technology Madras Chennai 600036 email: [email protected]. [email protected]  ernet.in  STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, Madras, SERC Madras, Madras, Anna Univ., Univ., INSDAG 

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STEEL BRIDGES INTRODUCTION CLASSIFICATION LOADS & LOAD COMBINATIONS ANALYSIS PLATE GIRDER BRIDGES TRUSS BRIDGES SUMMARY STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, Madras, SERC Madras, Madras, Anna Univ., Univ., INSDAG 

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INTRODUCTION Advantages of Steel Bridges Dead Load to Live Load Ratio is Lower Longer spans, Lesser pier and foundation cost

Lesser Construction Depth Lesser cost of embankment

Rapid Construction Lower cost of money, Lesser disruption of traffic

Less Disruption to Traffic in Urban Environment Lesser economic loss to community

Better Performance Under fatigue, seismic load, impact load, blast load

Longer Life Lower Life Cycle Cost STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

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CLASSIFICATION Type of Traffic Railway, Highway, Rail cum Roadway

Type of Main Structural System Beam, Girder, Truss, Arch, Stayed, Suspended

Position of Carriage way Deck type, Through type, Sem-through type

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

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TYPES OF BRIDGES AND SPAN RANGES Type of Bridge

Span Ranges (meters)

Cable suspended bridge Cable stayed bridge Arch Bridge Rigid Frame Bridge Girder Bridges 0

STEEL BRIDGES 

200

400

600

800

1000

1200

1400

1600

1800

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

5

MAIN STRUCTURAL SYSTEM Girder Bridge Plate Girder Deck Box Girder Truss Girder

Orthotropic

Composite Deck

Rigid Frame Bridges Arch Bridges Cable Stayed Bridges Cable Suspended Bridges STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

6

PLATE GIRDER BRIDGE

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

7

PLATE GIRDER BRIDGE

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

8

PLATE GIRDER BRIDGE

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

9

BOX GIRDER BRIDGE

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

10

BOX GIRDER BRIDGE

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

11

BOX GIRDER BRIDGE

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

12

BOX GIRDER BRIDGE

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

13

BOX GIRDER BRIDGE (Composite Deck)

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

14

BOX GIRDER BRIDGE (Orthotropic Deck)

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

15

TRUSS BRIDGE (suspended central span)

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

16

TRUSS BRIDGE (continuous span)

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

17

TRUSS BRIDGE (sloping chord)

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

18

TRUSS BRIDGE (Bailey Bridge)

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

19

TRUSS BRIDGE

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

20

TRUSS BRIDGE (connection gusset)

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

21

ARCH BRIDGE

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

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CABLE SUSPENDED BRIDGE

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

23

CABLE SUSPENDED BRIDGE

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

24

CABLE SUSPENDED BRIDGE

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

25

CABLE STAYED BRIDGE

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

26

SUMMARY •







Different types of Bridge systems are economical over different span lengths Details of common bridge systems were discussed An example of truss type bridge was presented Construction details of a suspension bridge was presented.

STEEL BRIDGES 

Teaching Resource in Design of Steel Structures  IIT Madras, SERC Madras, Anna Univ., INSDAG 

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