Introduction to Bridge Engineering Presentation created by David

Introduction to Bridge Engineering Presentation created by David Garber (Assistant Professor, FIU) 1

What is Structural Engineering? Buildings Bridges 2

A History of Bridge Engineering 1300 BC 1889 Timeline 1951 1883 1980 1781 1911 3

Types of Bridges Arch Suspension / Cable Stayed Girder Garabit Viaduct By Gustave Eiffel Brooklyn Bridge By John Roebling Walnut Lane Memorial Bridge By Gustave Magnel Truss Suspension Cable Stayed Francis Scott Key Bridge J. E. Greiner Co. , Inc. George Washington Bridge By Othmar Amman Puente del Alamillo By Santiago Calatrava 4

Types of Bridges Arch Suspension / Cable Stayed Girder Garabit Viaduct By Gustave Eiffel Brooklyn Bridge By John Roebling Walnut Lane Memorial Bridge By Gustave Magnel Truss Suspension Cable Stayed Francis Scott Key Bridge J. E. Greiner Co. , Inc. George Washington Bridge By Othmar Amman Puente del Alamillo By Santiago Calatrava 5

Selection of Bridge Type • Available Materials Concrete Steel Wood Good in compression Brittle failure mechanism Requires steel to resist tension Relatively inexpensive Good in tension May buckle in compression Ductile material Expensive 6

Selection of Bridge Type • Available Materials (concrete, steel, wood, etc. ) • Support Conditions and Span Details 7

Selection of Bridge Type • Available Materials (concrete, steel, wood, etc. ) • Support Conditions and Span Details • Type of Load 8

Selection of Bridge Type • Available Materials (concrete, steel, wood, etc. ) • Support Conditions and Span Details • Type of Load • Other Considerations Construction Limitations Limited Time Window Accelerated Bridge Construction 9

Bridge Construction Method: Cast-in-Place Cast-In-Place Concrete Construction 10

Bridge Construction Method: Prefabrication 11

Bridge Construction Method: Prefabrication 12

Accelerated Bridge Construction • Major components to bridge construction • Substructure • Retaining walls • Foundations • Columns systems • Superstructure • Beams • Deck • Parapets 13

Columns and Bent Caps Accelerated Conventional 14

Girders and Superstructure Accelerated Conventional 15

Full Depth Deck Panels Accelerated Conventional (Iowa – 24 th Street Bridge over I-29/I-80) 16

Lateral Slide (Oregon – Depot Street Bridge) 17

Lateral Slide (Iowa – Messena Lateral Bridge Slide) 18

SPMTs Self-Propelled Modular Transporter (Louisiana – 3249 Wells Road) 19

SPMTs 20

ABC: Benefits and Disadvantages • ABC Benefits • Shorter construction times • Improved overall quality (generally) • Decreased overall costs • ABC Disadvantages • Increased construction cost • New technologies (less general knowledge) • Sometimes difficult connection details 21

Bridge Engineering Activity • Bridge Designer Software • Balsa Wood Bridge (ABC-Style) 22

Selection of Bridge Type • Available Materials • Support Conditions and Span Details Design Space 23

Selection of Bridge Type • Type of Load • Other Considerations Fast Construction 24

Balsa Wood Bridge Project Trial 25

Thank You Presentation Created by: David Garber, Ph. D (dgarber@fiu. edu) Assistant Professor, Florida International University 26