Soil Liquefaction and Kinematic Loads Evaluation for Seismic Design of Pier in Slopes
Publication: Ports 2022
ABSTRACT
This paper presents the analysis and design approach used to evaluate the soil liquefaction and incorporate the liquefaction induced bi-directional kinematic loads in the design of a tandem lateral system for a pier structure located in an area with multiple slopes ranges from 60 to 80 ft high. The tandem lateral system, including a plumb-pile force resisting system perpendicular to the direction of soil flow paired with a batter pile force resistance system in the direction of the soil flow load, is developed to resist the bi-directional lateral spreading loads, which are estimated through a novel approach combining soil liquefaction analysis and numerical modeling with FLAC to realistically estimate the slope deformations and the associated kinematic loads. Details of the numerical modeling approach that include soil-pile interaction springs’ calibration and the effective stress analysis performed using the PM4Sand soil model will be discussed in the paper. The design approach also requires close collaboration between the structural and geotechnical engineers, which is key for success of this project.
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Ports 2022
Pages: 609 - 617
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Published online: Sep 15, 2022
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