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AAAEA APRIL DINNER SEMINAR/MEETING -
New Concepts and Innovations with U.S. Cable-Stayed Bridges |
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Date: |
Friday,
April 25, 2008 |
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Time: |
5:00 p.m.
Social
5:30 p.m. Dinner
6:15 p.m. Presentation |
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Location: |
Reza's Restaurant
432 W Ontario St
Chicago, IL 60610
Tel: (312) 664-4500 |
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Cost: |
Members.........................$20
Non-Members................$25
Students..........................$10
At door..............................$25
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RSVP by
April 24, 2008 |
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Presentation:
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The presentation
will discuss the design and construction of four recent cable stayed
bridges. Each utilized state-of-the-art concepts and inspired the
use of new technologies as well as address future inspection and maintenance
needs early in the design process.
The bridges to be discussed are:
- The William F. Natcher Bridge, Owensboro, Kentucky,
connecting Kentucky and Indiana has a main span of 366m and a total
length of 1.373km. Crossing through the Ohio River floodplain, a state-of-the
art hydraulic analysis was prepared to optimize flood relief structures,
scour depths and to determine velocity vectors for ship impact design.
- The landmark Leonard P. Zakim Bunker Hill Bridge, Boston,
Massachusetts, part of the multibillion-dollar Central Artery/Tunnel
Project, is the widest cable stayed bridge in the world. It is longitudinally
and transversely asymmetrical with ten lanes in the main span supported
by stay cables. It is a five span continuous hybrid structure with
the post-tensioned concrete back spans and a composite steel main
span structure. Built over a subway tunnel in a severely constricted
site, it is the first cable stay bridge in the U.S. to utilize ungrouted
stay cables, the “Iso-tension” stressing method, and visco-elastic
dampers.
- The design/build New Cooper River Bridge, Charleston,
South Carolina, is presently the longest main span cable stayed
bridge in the US. With a main span of 488m and a vertical clearance
of 56.4m, the bridge is designed for severe seismicity and heavy ship
impact forces.
- The Southern Outer Bangkok Ring Road Bridge, Bangkok,
Thailand, also known Chao Phraya River Bridge, forms a crucial
part of the southern beltway around Bangkok. The bridge has a main
span of 500 meters and a vertical clearance of more than 50 meters.
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Speaker: |
Vijay
Chandra, P.E., Senior Vice President, Parsons Brinckerhoff
Mr. Vijay Chandra is a Senior Vice President and Director of the Structures
for PB Americas, Inc. managing over 300 engineers nationwide. He was
the Chief Bridge Engineer for the Central Artery/Tunnel Project. He
has over 40 years of experience and is a registered engineer in many
states. He was the Chairman of the Precast/Prestressed Concrete Institute
committee on Bridges, member of the PCI Committee on Transportation
and a member of the Post-tensioning Institute committees on Bridges
and stay cables. Mr. Chandra is also a member of many national and
international organizations. He has authored many papers and presented
them at National & International Conferences.
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To Register: |
Dr. Moussa
Issa:
Tel: (708)-236-0900
moussa.issa@hbmengineering.com
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Jamal Grainawi:
Tel: (312) 803-6516
Grainawi@pbworld.com
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