15th Triennial International Conference
Seismic Analysis and Ground Improvement Design for the PCT Marine Terminal at the Port of Alaska
Publication: Ports 2019: Port Engineering
ABSTRACT
The Port of Alaska has embarked on a multi-phase modernization program that includes the development of a new petroleum and cement terminal (PCT) berth. The new terminal is being designed for a minimum 75-year service life as an essential facility, critical to maintaining immediate post-earthquake serviceability to support the region’s post-earthquake response. The new terminal is located in an aggressive marine environment with numerous design challenges including design ground motions associated with a magnitude 9.3 subduction zone earthquake, weak foundation soils, and shoreline conditions that are vulnerable to large-scale seismic displacements. This paper presents generalized subsurface conditions, in situ and cyclic laboratory testing data, and the results of nonlinear, effective stress, time history analysis of the proposed pile supported terminal structure, and deep soil mixing (DSM) ground improvement zone. On November 30th, 2018, after the completion of the ground improvement, the Port Mackenzie M7.0 earthquake occurred approximately 12 km from Anchorage. A summary of post-seismic observations at the PCT site is presented.
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Information & Authors
Information
Published In
Ports 2019: Port Engineering
Pages: 538 - 549
Editors: Pooja Jain, Moffatt & Nichol and William S. Stahlman III, America's Central Port
ISBN (Online): 978-0-7844-8261-2
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Sep 12, 2019
Published in print: Sep 12, 2019
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