Analysis of the Behaviour of Stone Column Stabilized Soft Ground Supporting Transport Infrastructure

Basack, Sudip; Indraratna, Buddhima; Rujikiatkamjorn, Cholachat

doi:10.1016/j.proeng.2016.06.044

Cited by 24 publications

(7 citation statements)

References 5 publications

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“…The effects of cyclic loading on reinforced soft ground has been incorporated using the modified Cam-clay model applying cycle-by-cycle analysis (Basack et al [10][11].Comparison of computed results with field data (Fig. 1) indicates accuracy of the analysis.…”

Section: Theoretical Analysismentioning

confidence: 99%

Soft Ground Improvement by Granular Reinforcement for Transport Infrastructure

Basack¹

2022

AJE

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Structures founded on soft ground are likely to be exposed to disastrous consequences due to possible undrained failure or excessive settlement unless proper ground improvement is undertaken. Soft soil improvement by granular reinforcement has numerous benefits in terms of strength and stiffness as well as accelerated consolidation. Foundation soil supporting transport infrastructure are in addition subjected to cyclic loading initiated by traffic movement. This paper presents the load-transfer and consolidation characteristics relevant to stone column reinforced soft ground supporting transport infrastructure.

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Section: Theoretical Analysismentioning

confidence: 99%

Soft Ground Improvement by Granular Reinforcement for Transport Infrastructure

Basack¹

2022

AJE

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“…A significant hydraulic gradient at the interface results in the washing out of fine clay particles into the pore spaces, gradually reducing the drainage area of the stone columns, this phenomenon is referred to as "clogging" [13]. Whenever reinforced soft soil supports a transport infrastructure such as the railways or highways, the ground surface is subjected to cyclic loads apart from the usual static loads imposed by the regular traffic [14][15][16]]. Significant experimental and numerical studies on stone column reinforced soft soil behavior were done in the recent past [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Load-Settlement Characteristics of Stone Column Reinforced Soft Marine Clay Deposit: Combined Field and Numerical Studies

Basack

Nimbalkar

2023

Sustainability

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Foundations supporting infrastructure built on soft and compressible marine soil are unlikely to sustain due to possibility of undrained shear failure or excessive settlement of the supporting soil. This necessitates the importance of implementing an adequate ground improvement strategy. Among different techniques, soft soil reinforcing by the installation of stone columns is one of the most successful methods in terms of long-term stability of foundations. To investigate the load-settlement characteristics of such reinforced soil, a group of closely spaced stone columns was constructed at a location along the eastern coast of Australia. The site geology revealed thick layers of soft, compressible marine clay deposit. These stone columns were loaded by constructing earthen embankment and the resulting load-settlement characteristics were measured by an array of sensors. A two-dimensional plane strain analysis was performed using finite element modeling simulations. Comparison of numerical results with the field data demonstrated accuracy of the numerical model. Additional studies were carried out to investigate the efficiency of the model. This paper integrates the new findings from the full-scale field study and advanced numerical simulations while drawing pertinent conclusions.

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“…e research topic is simplified as a plane strain problem, and then the dynamic response of stone column composite foundations under traffic loads is analysed by Du [14] by using linear elastic and elastoplastic soil constitutive relationships and the finite element method. Basack et al [15] presented an analytical and numerical study on the behaviour of stone column stabilized soft ground supporting transport infrastructure. Analyses have been carried out on the response of reinforced soft ground under static and cyclic loading relevant to transport corridors.…”

Section: Introductionmentioning

confidence: 99%

Model Testing of Encased Stone Column Composite Foundations under Traffic Loads

Yuan

Zhao

Xiao

et al. 2021

Advances in Civil Engineering

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In soft soil foundations, geogrid encased stone column composite foundation technology has been widely applied and developed in recent years due to its efficient treatment. In this study, eight groups of laboratory model tests were performed in a large-scale testing tank to investigate the bearing mechanism and stress characteristics of the composite foundation of geogrid encased stone columns under traffic loads with different cyclic load ratios. The stress at the bottom of the stone column and settlement of the composite foundation were measured and analysed. The test results show that cyclic shearing will cause the rearrangement of the soil particles at the column-soil interface, which will cause changes in the face pressure and effective stress state of the column-soil boundary. The cyclic load has a substantial influence on the accumulation settlement of the composite foundation and the development of the lateral stress state of the column. Based on the test results, the development law of the cumulative settlement is summarized, and the change mechanism of the column stress state is analysed and discussed.

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Analysis of the Behaviour of Stone Column Stabilized Soft Ground Supporting Transport Infrastructure

Cited by 24 publications

References 5 publications

Soft Ground Improvement by Granular Reinforcement for Transport Infrastructure

Soft Ground Improvement by Granular Reinforcement for Transport Infrastructure

Load-Settlement Characteristics of Stone Column Reinforced Soft Marine Clay Deposit: Combined Field and Numerical Studies

Model Testing of Encased Stone Column Composite Foundations under Traffic Loads

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