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FALL 2018 CGS-SOS Cross Canada Lecture: Innovative Solutions in Construction of the New San Francisco-Oakland Bay Bridge Self-Anchored Suspension Span (1.5 Hours PEO PEAK)

Canadian Geotechnical Society - Southern Ontario Section

Tuesday, 2 October 2018 from 5:30 PM to 8:30 PM (EDT)

FALL 2018 CGS-SOS Cross Canada Lecture: Innovative...

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Ticket Type Remaining Sales End Price Fee Quantity
Early Bird - CGS members / Government Employees
For Purchase On/Before September 21
21 Tickets Ended $55.00 $4.37
Regular - CGS members / Government Employees
For Purchase After September 21
35 Tickets 30 Sep 2018 $70.00 $5.28
Early Bird - Non CGS Members
For Purchase On/Before September 21
6 Tickets Ended $60.00 $4.67
Regular - Non CGS Members
For Purchase After September 21
25 Tickets 30 Sep 2018 $75.00 $5.59
Students 12 Tickets 30 Sep 2018 $25.00 $2.54
Students Sponsorship   more info 18 Tickets 1 Oct 2018 $60.00 $4.67

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Event Details

AbstractThe new east span of the San Francisco-Oakland Bay Bridge features a single tower self-anchored suspension (SAS) bridge that became the largest of its kind in the world when completed in 2013. During construction of the SAS bridge, temporary towers and trusses were required to support the box girders until erection of the suspension cables was complete. Innovative geotechnical solutions were designed that included the use of micropiles for towers located on the steep slopes of Yerba Buena Island (YBI), rock socketed drilled shafts for towers on relatively flat ground at YBI, and large diameter steel pipe piles driven into marine sediments and bedrock for towers over water. In addition, the installation method used for the main cable of the asymmetrical suspension bridge required the 160 m high main tower to be displaced 500 mm to the west, which was accomplished by using 200 m long pull-back cables anchored to bedrock at YBI with micropiles, prior to the erection of the main cable. Furthermore, the bridge decks from the west approach connecting to the west pier of the SAS bridge needed to be pulled down 75 mm in order to make the hinge closure pour during construction, which required a tie-down system utilizing micropile foundations. This lecture presents the issues and challenges faced during the design and construction of the tower foundations, as well as the novel applications of micropiles for the main tower pull-back cables, and the west approach deck pull-down cables.

Speaker: Dr. Alex Sy, P.Eng., FEIC is Vice President, Technical at Klohn Crippen Berger Ltd. in Vancouver, BC. He has more than 40 years of experience in geotechnical and earthquake engineering for transportation, water and wastewater infrastructures, heavy industrial facilities, hydroelectric and water retention dams, and mine tailings dams. He has worked throughout Canada and internationally. Alex has provided forensic engineering and expert witness services for infrastructure failures involving dams, dykes, bridges, pipelines, buildings and landslides. He currently serves on Independent Technical Review Boards for several major water supply projects and tailings storage facilities in high seismic environments.

Alex has a Bachelor in Civil Engineering from the University of Queensland in Australia, and a Master and Ph.D. in Geotechnical Engineering from the University of British Columbia. He is also an Adjunct Professor in the Civil Engineering Department of the University of British Columbia. He has authored more than 50 technical papers in various aspects of geotechnical and geoseismic engineering.

Alex received the Canadian Geotechnical Colloquium award from the Canadian Geotechnical Society in 1996, and the VGS Award from the Vancouver Geotechnical Society in 2015. He is a Fellow of the Engineering Institute of Canada.

Have questions about FALL 2018 CGS-SOS Cross Canada Lecture: Innovative Solutions in Construction of the New San Francisco-Oakland Bay Bridge Self-Anchored Suspension Span (1.5 Hours PEO PEAK)? Contact Canadian Geotechnical Society - Southern Ontario Section

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When & Where


Pearson Convention Center - Hall F
2638 Steeles Avenue East
Brampton, ON L6T 4L7
Canada

Tuesday, 2 October 2018 from 5:30 PM to 8:30 PM (EDT)


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Canadian Geotechnical Society - Southern Ontario Section


About Us


The Canadian Geotechnical Society Southern Ontario Section (CGS-SOS) represents the national organization at the local level centered at the Greater Toronto Area (GTA) and covering some cities in Southern Ontario. The CGS-SOS was established in the early 1970s and forms the largest region of the Society. Its purpose is to provide opportunities for continuing education (through lectures and seminars), and for constructive dialogue and sharing of experiences. This is accomplished through organizing events on about a monthly basis.


The Canadian Geotechnical Society (CGS) is an independent, federally incorporated, non-profit learned society which exists to serve and promote the geotechnical and geo-science community in Canada. It encompasses a wide spectrum of scientific and engineering disciplines within the geotechnical field. Membership is open to individuals from all sectors including private consulting, universities, industry, contracting and public services.

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