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Bridges. Prof. Anthony Cioffi , P.E. Professor/Chairman New York City College of Technology/CUNY. How are Bridges Used?. Walkways Highways/Roads Railways Pipelines Connecting Lands Crossing Rivers Stadiums Roofs. Types of Bridges. Arch Truss Cantilever Cable-Stayed Suspension
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Bridges Prof. Anthony Cioffi, P.E. Professor/Chairman New York City College of Technology/CUNY
How are Bridges Used? • Walkways • Highways/Roads • Railways • Pipelines • Connecting Lands • Crossing Rivers • Stadiums • Roofs
Types of Bridges • Arch • Truss • Cantilever • Cable-Stayed • Suspension • Beam • Moveable
What Makes a Bridge Stay Up? • Forces – 2 Types 1st - Compression > Pushing or Squeezing Force 2nd - Tension > Pulling or Stretching Force
Arch Bridges • Keystone – the wedge-shaped stone of an arch that locks its parts together • Abutments – the structures that support the ends of the bridge
Arch Bridges • How Does it Work ? “Compression”
Arch Bridges • Where have you seen these bridges? Bayonne Bridge – N.J. Sydney Harbor Bridge Hoover Dam Bridge Apollo Bridge - Slovakia
Steel Arch Bridge • Where have you seen these bridges? High Bridge(officially, the Aqueduct Bridge) Bronx, N.Y.
Hell Gate Arch Bridge, New York, Connecting Railroad Bridge from Queens
Cable-Stayed Bridges • Piers – Supports the Towers • Towers – Support the Cables • Cables – Thick Steel Ropes from which the decking is suspended • Decking – Supports the Roadway Tower Cable Deck Pier
Cable-Stayed Bridges • How does it Work? Tension & Compression
Cable-Stayed Bridges • Where have you seen these bridges? Abdoun Bridge – Amman, Jordan Puente de la Unida – Mexico Octavio Frias de Oliveira Bridge São Paulo - Brazil.
Suspension Bridges • Similar to Cable-Stayed > Uses Cables for Support Tower Cable Suspender Cable Deck Pier Abutment
Suspension Bridge Tension & Compression • How does it Work?
Suspension Bridges • Where have you seen these bridges? Golden Gate Bridge – San Francisco Akashi Kaikyo Bridge - Japan Chesapeake Bay Bridge Virginia
Truss Bridge Support (Abutment)
Truss Bridges • How does Work? Tension& Compression
Truss Bridges • Where have you seen these bridges? Francis Scott Key Bridge - Maryland, USA Betsy Ross Bridge – Philadelphia, PA
Truss Connections NY-79 Bridge Broome County, New York Warren
Cantilever Bridge • Where have you seen these bridges? Firth of Forth-Forth Rail Bridge Edinburgh, Scotland Bluewater Bridge -Port Huron Michigan
Pierre Pflimlin Bridge - France 59th Street Bridge – N.Y.C.
Beam Bridge • Where have you seen these bridges? Chesapeake Bay Bridge-Tunnel
Moveable Bridges Bascule Bridge Woodrow Wilson Bridge-Virginia Swing Bridge London Bridge Lift Bridge
Build a Bridge Open the Secret Envelope!