Class A and C predictions for Ballina trial embankment with vertical drains using standard test data from industry and large diameter test specimens

Indraratna, Buddhima; Baral, Pankaj; Rujikiatkamjorn, Cholachat; Perera, Darshana

doi:10.1016/j.compgeo.2017.06.013

Cited by 28 publications

(3 citation statements)

References 43 publications

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“…Conversely, different guidelines propose varying ranges for these parameters. Thus, accurately determining or estimating appropriate values for these parameters holds paramount importance for addressing geotechnical problems (Indraratna et al, 2018). The reliability of correlations used in this study is validated with available field data, which is subsequently applicable in solving geotechnical design challenges.…”

Section: Literature Reviewmentioning

confidence: 82%

Finite Element Analysis on Load-Settlement Behavior of Axially Loaded Pile on Sand

Gupta,

Dahal

2023

J. Engin. Technol. Planning

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The analysis of geoengineering problems using various constitutive models necessitates substantial field and laboratory research, which entails a significant investment of time and money. As a result, the application of Finite Element Analysis in geoengineering projects is limited. This research focuses on numerically examining the behavior of a pile in a sandy soil layer. The study employs different relationships to estimate soil parameters from standard penetration tests and simple lab tests. These derived parameters, required for the Mohr-Coulomb & Hardening Soil constitutive model and the linear elastic model of the pile, are implemented in the PLAXIS 3D software. This software is used to simulate the settlement of the pile in sandy soil incorporating factors like mesh density and soil-pile interaction. The results of the study reveal that employing a finer mesh size leads to more precise results. Additionally, an interface strength of 67% proves to be more accurate for this study. Furthermore, the correlation introduced by Papadopoulos (1982) exhibits a close relation with field settlement values. In contrast, other correlations either overestimate or underestimate the results. Moreover, the study conclude that Mohr-Coulomb constitutive model satisfactorily predicts the behavior of the pile for the study area.

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Section: Literature Reviewmentioning

confidence: 82%

Finite Element Analysis on Load-Settlement Behavior of Axially Loaded Pile on Sand

Gupta,

Dahal

2023

J. Engin. Technol. Planning

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“…Prefabricated vertical drains (PVD) are widely used to accelerate the consolidation of soft soils (Chai et al 2020;Feng et al 2017;Indraratna et al 2004Indraratna et al , 2016Indraratna et al , 2018Nguyen et al 2018b;Tang and Onitsuka 2001). Based on some specific assumptions, many analytical solutions have been proposed for the consolidation of homogeneous soil induced by vertical drains (Barron 1948;Chai et al 2001;Hansbo 1981Hansbo , 2001Indraratna et al 2005Indraratna et al , 2007Tang and Onitsuka 2000), but since the sedimentary history and stress conditions differ, most soft soils are rarely homogeneous and usually consist of several different layers (Liu et al 2014;.…”

Section: Introductionmentioning

confidence: 99%

A vertical and radial consolidation analysis incorporating drain degradation based on the spectral method

Indraratna

Nguyên

et al. 2021

Computers and Geotechnics

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“…The provision of PVDs facilitates faster rates of consolidation allowing the presumed vertical and horizontal settlements to be completed in a reasonably short period of time. A number of theoretical, analytical [1][2][3][4] and numerical models [5][6][7][8][9][10] are available for estimating ground movement parameters such as ultimate settlement, degree of consolidation, and excess pore water pressure. However, reliable predictions of the rate and magnitude of consolidation settlement remain a challenging task due to several uncertainties associated with input parameters, variability in soil profiles, properties of PVDs and prediction methods and constitutive material models affecting the outcome of the estimations [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Uncertainty Analysis in Prediction of Settlements for Spatial Prefabricated Vertical Drains Improved Soft Soil Sites

2020

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This paper presents the quantification of uncertainties in the prediction of settlements of embankments built on prefabricated vertical drains (PVDs) improved soft soil deposits based on data collected from two well-documented projects, located in Karakore, Ethiopia, and Ballina, Australia. For this purpose, settlement prediction biases and settlement distributions were statistically computed based on analyses conducted on two Class A and Class C numerical predictions made using PLAXIS 2D finite element modelling. From the results of prediction bias, Class C predictions agreed well with the field measured settlements at both sites. In Class C predictions, the computed settlements were biased to the measured values. For Class A predictions, the calculated settlement values were in the range of mean and mean minus 3SD (standard deviations) for Karakore clay, and they were within mean and mean minus 2SD limit for the Ballina soil. The contributing factors to the settlement uncertainties of the Karakore site may include variability within the soil profile of the alluvial deposit, particularly the presence of interbedded granular layer within the soft layers, and the high embankment fills, and the limited number of samples available for laboratory testing. At the Ballina test embankment site, the uncertainties may have been associated with the presence of transitional layers at the bottom of estuarine clay and sensitivity of soft soil to sample disturbances and limitations in representing all the site conditions.

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Class A and C predictions for Ballina trial embankment with vertical drains using standard test data from industry and large diameter test specimens

Cited by 28 publications

References 43 publications

Finite Element Analysis on Load-Settlement Behavior of Axially Loaded Pile on Sand

Finite Element Analysis on Load-Settlement Behavior of Axially Loaded Pile on Sand

A vertical and radial consolidation analysis incorporating drain degradation based on the spectral method

Uncertainty Analysis in Prediction of Settlements for Spatial Prefabricated Vertical Drains Improved Soft Soil Sites

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