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1 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG STEEL BRIDGES INTRODUCTION CLASSIFICATION LOADS.

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Presentation on theme: "1 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG STEEL BRIDGES INTRODUCTION CLASSIFICATION LOADS."— Presentation transcript:

1 1 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG STEEL BRIDGES INTRODUCTION CLASSIFICATION LOADS & LOAD COMBINATIONS ANALYSIS PLATE GIRDER BRIDGES TRUSS BRIDGES SUMMARY

2 2 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG 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

3 3 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG 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

4 4 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG TYPES OF BRIDGES AND SPAN RANGES Type of Bridge Cable suspended bridge Cable stayed bridge Arch Bridge Rigid Frame Bridge Girder Bridges Span Ranges (meters)

5 5 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG MAIN STRUCTURAL SYSTEM Girder Bridge Plate GirderOrthotropic Deck Box Girder Truss GirderComposite Deck Rigid Frame Bridges Arch Bridges Cable Stayed Bridges Cable Suspended Bridges

6 6 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG PLATE GIRDER BRIDGE

7 7 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG PLATE GIRDER BRIDGE

8 8 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG BOX GIRDER BRIDGE

9 9 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG BOX GIRDER BRIDGE

10 10 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG BOX GIRDER BRIDGE

11 11 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG BOX GIRDER BRIDGE

12 12 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG BOX GIRDER BRIDGE (Composite Deck)

13 13 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG BOX GIRDER BRIDGE (Orthotropic Deck)

14 14 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG TRUSS BRIDGE (suspended central span)

15 15 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG TRUSS BRIDGE (continuous span)

16 16 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG TRUSS BRIDGE (sloping chord)

17 17 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG TRUSS BRIDGE (Bailey Bridge)

18 18 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG TRUSS BRIDGE

19 19 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG TRUSS BRIDGE (connection gusset)

20 20 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG ARCH BRIDGE

21 21 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG CABLE SUSPENDED BRIDGE

22 22 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG CABLE SUSPENDED BRIDGE

23 23 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG CABLE SUSPENDED BRIDGE

24 24 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG CABLE STAYED BRIDGE

25 25 STEEL BRIDGES Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG 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.


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