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Section 2

Introduction To Structures

2.1 NHI Video: Major Structures Inspection

Bridge Types 1

Bridge Terminology 13

Bridge Terminology Exercise

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Introduction To Structures Section 2

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Basic Bridge Types

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Basic Bridge Types

ere are genera y ypes o r ges:

Beam Bridge

Arch Bridge

Suspension Bridge

Cable Stayed Bridge

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Introduction To Structures Section 2

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Basic Bridge Types

BeamArch

Suspension

Cable Stayed

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Beam Bridge

ommon eam r ge ypes:

PCPS concrete Slab/Box bridge

PCPS concrete girder bridge (Bulb-I or Bulb-T)

CIP Concrete Slab bridge

CIP Post-Tensioned Box Girder bridge

Truss bridge

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Beam Bridge Cross-Sections

Beam Bridge Cross-Sections

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Truss Bridge Types

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Bridge Types

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Precast, Prestressed, Concrete Slab

Precast, Prestressed, Concrete Box Beam

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Precast, Prestressed, Concrete Girders

Steel Plate Girder

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Post-tensioned Box Girder

Through Truss

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Deck Truss

Arch

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Suspension

Cable StayedMILLAU VIADUCT

The highestbridge in the world8071 feet long

Supportedby 7 pillarsreaching1125 feethigh

Costof $523 Million

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Span Lengths

ruc ure ype pan ange

PCPS Slabs 70 feet

PCPS Box Beams 120 feet

CIP Concrete Slabs 50-66-50 feet (3 Span)

Precast Deck Girder 130 feet

PCPS Bulb-I & T Girders 180 feet +

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Span Lengths

ruc ure ype pan ange

CIP PT Box Girder 300 feet

Steel Plate girder 250 feet

Steel truss *

* Normally used for longer, multi-span continuous bridges.

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Introduction To Structures Section 2

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Part of Structures

Bridges can be divided into Two Parts.

Substructure

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Substructure

r ge su s ruc ure nc u es:

Foundations(Spread Footing, Pile Footing, Drilled Shafts)

Abutments, Pile Caps

Piers Columns

Crossbeams

Beamseats

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Superstructure

r ge supers ruc ure nc u es:

Bearing devices on the beam seats

Girders

Diaphragms

Deck

Other above-deck items such as curbs and rails

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Bridge Terminology

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Introduction To Structures Section 2

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Bridge Terminology

Refer to the Glossary in Appendix A

or a ona r ge erm no ogy.

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B

RIDGETER

MINOLOGY

EXERCISE

1)__________

2)_______

3)_________

4)__________

5)_______

6)_

_______

7)_______

8)_

______

9)____

__

10)__

_______

11

)_________

12

)_________

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TIMBER

STRU

CTURETERMINOLOGY

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TRUSSBRIDGETERMINOLOGY