ASCE Bridge Presentation 2012

8/16/2019 ASCE Bridge Presentation 2012

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Bridges

Prof. Anthony Cioffi, P.E.Professor/Chairman

New York City College of Technology/CUNY


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How are Bridges Used?

• Walkways

• Highways/Roads

• Railways

• Pipelines

• Connecting Lands

• Crossing Rivers

•Stadiums

• Roofs


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Types of Bridges Arch

Truss

Cantilever

Cable-Stayed

Suspension

Beam

Moveable


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What Makes a Bridge Stay Up?

• Forces – 2 Types

1st - Compression

> Pushing or Squeezing Force

2nd - Tension

> Pulling or Stretching Force


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Arch Bridges

• Keystone – the wedge-

shaped stone of anarch that locks its

parts together

• Abutments – thestructures that

support the ends of

the bridge


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Arch Bridges• How Does it Work ?

“Compression”


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Arch Bridges

• Where have you seen these bridges?

Bayonne Bridge – N.J. Sydney Harbor BridgeHoover Dam Bridge

Apollo Bridge - Slovakia


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High Bridge (officially, the Aqueduct Bridge)Bronx, N.Y.

Steel rch Bridge• Where have you seen these bridges?


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Hell Gate Arch Bridge, New York, Connecting Railroad Bridge from Queens


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Cable-Stayed Bridges• Piers – Supports the Towers

• Towers – Support the Cables

• Cables – Thick Steel Ropes from which the deckingis suspended

• Decking – Supports the Roadway

Pier

CableTower

Deck


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Cable-Stayed Bridges• How does it Work?

Tension & Compression


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Cable-Stayed Bridges


Abdoun Bridge – Amman, Jordan

Puente de la Unida – Mexico

Octavio Frias de Oliveira BridgeSão Paulo - Brazil.


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Zakim Bridge, Boston, MA


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Sunshine Skyway Bridge, Tampa, FL


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Suspension Bridges

• Similar to Cable-Stayed> Uses Cables for Support

Tower

Cable

Abutment

Deck

Suspender Cable

Pier


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Suspension Bridge• How does it Work?

Tension & Compression


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Suspension Bridges


Akashi Kaikyo Bridge - Japan Golden Gate Bridge – San Francisco

Chesapeake Bay BridgeVirginia


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Brooklyn Bridge, Brooklyn, NY


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Verrazano-Narrows Bridge, New York City


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Truss Bridge

Vert ical Bottom Chord

Diagonal

End Post

Hip Vert ical

Deck

Top Chord

Vert ical Bottom Chord

Diagonal

End Post

Hip Vert ical

Deck

Top Chord

Support (Abutment)


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Truss Bridges• How does Work? Tension& Compression


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Truss Bridges• Where have you seen these bridges?

Francis Scott Key Bridge -Maryland, USA

Betsy Ross Bridge – Philadelphia, PA


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Under Truss Bridge


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NY-79 Bridge

Broome County, New York

Warren

Truss Connections


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Cantilever Bridge

Firth of Forth-Forth Rail Bridge

Edinburgh, Scotland


Bluewater Bridge -Port Huron Michigan


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59th Street Bridge – N.Y.C.

Pierre Pflimlin Bridge - France


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Beam Bridge

Chesapeake Bay Bridge-Tunnel



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Moveable Bridges

Bascule BridgeWoodrow Wilson Bridge-Virginia

Swing Bridge

Lift Bridge

London Bridge


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Questions?


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Build a Bridge

Open the Secret Envelope!

Documents

ASCE Bridge Presentation 2012