The effect of earthquake motion characteristics on potentially liquefiable pile-pinned sloping ground

Panaghi, Kamran; Mahboubi, Ahmad; Mahdavian, Abbas

doi:10.1007/s10518-018-00529-5

Cited by 5 publications

(1 citation statement)

References 24 publications

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“…1) between the two cases. Similar results that greater EPWP obtained from the motion with abundant low-frequency component was also reported by Panaghi et al (2019) and . This phenomenon can be mechanically explained: (1) According to the Newmark-beta integration scheme, a relatively larger horizontal residual displacement is usually obtained from a low-frequency earthquake excitation with the same PHA, resulting in the larger plastic strain of soil; (2) The high-frequency earthquake excitation generally induces larger velocity in the computational domain and thus results in larger Rayleigh damping force applied to the system (see Eq.…”

Section: Case Analyses and Discussionsupporting

confidence: 89%

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

Chen

Cai

et al. 2022

Bull Earthquake Eng

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

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Section: Case Analyses and Discussionsupporting

confidence: 89%

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

Chen

Cai

et al. 2022

Bull Earthquake Eng

View full text Add to dashboard Cite

show abstract

Experimental study of vertical and batter pile groups in saturated sand using a centrifuge shaking table

Zhang

Zhixiao

et al. 2021

Earthq. Eng. Eng. Vib.

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Influence of ground motion characteristics (velocity pulse and duration) on the pile responses in liquefiable soil deposits

et al. 2022

Soil Dynamics and Earthquake Engineering

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The effect of earthquake motion characteristics on potentially liquefiable pile-pinned sloping ground

Cited by 5 publications

References 24 publications

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

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

Experimental study of vertical and batter pile groups in saturated sand using a centrifuge shaking table

Influence of ground motion characteristics (velocity pulse and duration) on the pile responses in liquefiable soil deposits

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