Response of soil–pile–superstructure–quay wall system to lateral displacement under horizontal and vertical earthquake excitations

نویسندگان

چکیده

The excess pore water pressure generated under the combined vertical and horizontal earthquake excitations is generally greater than that unidirectional excitation, which may further affect dynamic response of soil-pile-superstructure-quay wall (SPSQ) system. This study conducted a coupled effective-stress analysis for SPSQ system to liquefaction-induced lateral displacement excitations. To accurately describe behind quay wall, liquefaction behavior soils was described by modified generalized plasticity model with parameters properly determined from laboratory tests. numerical validated against previously reported centrifuge results show excitation abundant low-frequency component causes residual displacements pile cap (ux,RC) (ux,RQ) high-frequency component. ux,RC ux,RQ tend increase as peak acceleration increases both inclined piles. Increasing fixity significantly reduces influence ground motion on ux,RQ. polarity reversal also has significant effect should be considered in analyses. In addition, liquefied an amount rotation pile, probably leading potential shear failure at head Special consideration given earthquake-induced force deeper location because could piles certain cases.

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ژورنال

عنوان ژورنال: Bulletin of Earthquake Engineering

سال: 2022

ISSN: ['1573-1456', '1570-761X']

DOI: https://doi.org/10.1007/s10518-022-01572-z