Liquefaction mitigation mechanisms of stone column-improved ground by dynamic centrifuge model tests

Zhou, Yan‐Guo; Li, Kai; Sun, Zheng-Bo; Chen, Yunmin

doi:10.1016/j.soildyn.2021.106946

Cited by 21 publications

(2 citation statements)

References 30 publications

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“…This ratio is defined as the relationship between the stress acting on the top of column (c) and the stress acting on the adjacent soil (s), as shown in Eq. (1). In previous field measurements and laboratory findings, the value of nc for granular columns was found to vary from 2 to 6 [2].…”

Section: Introductionmentioning

confidence: 87%

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Analysis of Stress Transfer and Distribution of an Embankment on Unreinforced and Stone Column-Reinforced Soft Soils

Pham

2024

GEOMATE

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The technology of stone column-reinforced soft soil (SCRS) has become widespread use in infrastructure projects including embankments, dikes, and dams, as well as industrial and civil constructions, with a particular presence in Western countries and North America. Compared to traditional reinforcement methods, SCRS offers numerous benefits which are the substantial enhancement of ground load-bearing capacity, the considerable decrease in building time, the increase in soil liquefaction resistance, and the utilization of locally sourced materials. The study establishes 3D numerical models of a four-meter high embankment on unreinforced and stone column-reinforced soft soils to investigate the stress transfer and distribution within the systems. The geological condition was derived from the project involving the approach road to the Ganh Hao bridge in Bac Lieu province, Vietnam. The soils, embankment, and stone columns were modeled using the linear elastic, perfectly plastic model. The stresses acting on the column head and soft soil, the stress concentration ratio, and the stress along column depth were described. The numerical results show the appearance of an arching effect for stress transfer within the embankment, characterized by a stress concentration ratio exceeding 3. Moreover, the assessment of negative skin friction around the column shaft points to the presence of an equilibrium plane for negative skin friction located at a depth of approximately 17 to 18 meters.

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Section: Introductionmentioning

confidence: 87%

“…The compaction and drainage acceleration actions promote the expansion of the neighboring soil, impeding the buildup of excessive pore water pressure during seismic shaking. Consequently, this substantially decreases the likelihood of liquefaction and subsequent settlement after the shaking event [1].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Stress Transfer and Distribution of an Embankment on Unreinforced and Stone Column-Reinforced Soft Soils

Pham

2024

GEOMATE

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Deformation Mechanisms of Stone Column-Improved Liquefiable Sloping Ground Under Earthquake Loadings

Zhou

Li²

2022

Proceedings of the 4th International Conference on Performance Based Design in Earthquake Geotechnical Engineering (Beijing 202

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Centrifuge model tests on liquefaction mitigation effect of soil-cement grids under large earthquake loadings

Yuan

Kurimoto

Zhou

et al. 2023

Bull Earthquake Eng

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Liquefaction mitigation mechanisms of stone column-improved ground by dynamic centrifuge model tests

Cited by 21 publications

References 30 publications

Analysis of Stress Transfer and Distribution of an Embankment on Unreinforced and Stone Column-Reinforced Soft Soils

Analysis of Stress Transfer and Distribution of an Embankment on Unreinforced and Stone Column-Reinforced Soft Soils

Deformation Mechanisms of Stone Column-Improved Liquefiable Sloping Ground Under Earthquake Loadings

Centrifuge model tests on liquefaction mitigation effect of soil-cement grids under large earthquake loadings

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