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
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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
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PLATE GIRDER BRIDGE
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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PLATE GIRDER BRIDGE
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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PLATE GIRDER BRIDGE
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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BOX GIRDER BRIDGE
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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BOX GIRDER BRIDGE
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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BOX GIRDER BRIDGE
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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BOX GIRDER BRIDGE
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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BOX GIRDER BRIDGE (Composite Deck)
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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BOX GIRDER BRIDGE (Orthotropic Deck)
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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TRUSS BRIDGE (suspended central span)
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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TRUSS BRIDGE (continuous span)
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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TRUSS BRIDGE (sloping chord)
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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TRUSS BRIDGE (Bailey Bridge)
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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TRUSS BRIDGE
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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TRUSS BRIDGE (connection gusset)
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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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
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CABLE SUSPENDED 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
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CABLE STAYED BRIDGE
STEEL BRIDGES
Teaching Resource in Design of Steel Structures IIT Madras, SERC Madras, Anna Univ., INSDAG
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SUMMARY •
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•
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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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