Large-scale shallow foundation load tests on soft clay – At the National Field Testing Facility (NFTF), Ballina, NSW, Australia

Gaone, F.M.; Gourvenec, Susan; Doherty, James

doi:10.1016/j.compgeo.2017.05.008

Cited by 15 publications

(5 citation statements)

References 20 publications

(27 reference statements)

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“…Prediction and utilisation of this gain in bearing capacity allows more efficient foundation design. Previous studies have observed this behaviour via model-scale experiments (Lehane & Gaudin, 2005;Bienen & Cassidy, 2013;Stanier et al 2014;Vulpe & White, 2014;Vulpe et al 2016a,b), numerical simulations (Bransby, 2002;Zdravkovic et al 2003Fu et al 2015;Feng and Gourvenec, 2016), and field tests (Lehane & Jardine, 2003;Gaone et al 2017).…”

Section: Introductionmentioning

confidence: 72%

Enhancement of bearing capacity from consolidation: due to changing strength or failure mechanism?

Stanier

White

2019

Géotechnique

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Bearing capacity of shallow foundations is higher following preload (or self-weight)-induced consolidation because the soil strength changes, and perhaps because the failure mechanism changes. Previous studies have illustrated this effect by plotting or predicting changes in either bearing capacity factor or strength. This study explores the relative contribution of these two effects. This is achieved by formalising a definition of bearing capacity factor, which is described in terms of the average strength mobilised in the deformation mechanism at failure. Using the alternative definition of bearing capacity factor, the gain in foundation capacity is shown to be almost entirely due to changes in soil strength, rather than bearing capacity factor, which remains largely unaffected by the strength gains. This observation should encourage future studies into consolidated bearing capacity to present gains in capacity in terms of changes in mobilised strength rather than changes in bearing capacity factors, and supports the use of prediction methods that focus on defining the change in soil strength.

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Section: Introductionmentioning

confidence: 72%

Enhancement of bearing capacity from consolidation: due to changing strength or failure mechanism?

Stanier

White

2019

Géotechnique

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“…It can measure stress in multiple orientations, providing a more comprehensive analysis of the stress field and its impact. Additionally, it is fast and non-destructive, making it a great option for stress measurements [37]. HF method can provide high confidence measurement of in-situ stress at several kilo meters depths [33].…”

Section: Conventional (Classical) Hydraulic Fracturing (Hf)mentioning

confidence: 99%

“…On the other hand, the main drawback of using hydraulic fracturing as an in-situ stress measurement method is that it has the potential to cause damage to the surrounding rock. Additionally, the measurements obtained may be affected by factors such as temperature, pore pressure, and the presence of fractures in the rock [37].…”

Section: Conventional (Classical) Hydraulic Fracturing (Hf)mentioning

confidence: 99%

Rock Stress Measurement Methods in Rock Mechanics—A Brief Overview

Sazid,

Hussein,

Abudurman

2023

WJET

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The current brief review paper on rock stress measurement methods is very crucial factors in mining, civil infrastructure, geothermal energy, nuclear underground disposal, large underground oil storage caverns, etc as well as in geology and geophysical area. Measurement of in situ rock stress is a very challenging and difficult quantity and not possible to measure directly. Measure the deformation or displacements or hydraulic factors by perturbing the rock and converting the measured quantity into rock stress. There are two main categories for measuring methods: direct and indirect methods. The most common methods of direct in situ stress techniques are briefly described including advantages, disadvantages and limitations. Moreover, authors included the application of Artificial Intelligence (AI) for rock stress measurement methods.

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“…This is the reason why no secondary compression settlement has been considered into settlement curves presented in Figure 20. Figure 19(b) shows the geometry of the shallow footing, which is modified from the square footing built at the Ballina field testing facility (Gaone et al 2018) to a strip footing. The strip footing has a width of 2.0 m and 0.6 m in height.…”

Section: Implications Of Sampling Disturbance In Geotechnical Designmentioning

confidence: 99%

Effects of sampling disturbance in geotechnical design

et al. 2019

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This paper describes an experimental study of the effects of sampling disturbance in an Australian natural soft clay and the consequences of different sample quality on the representativeness of soil parameters used in geotechnical designs. The paper is divided into three sections. Laboratory test results obtained from specimens retrieved using three different tube samplers as well as the Sherbrooke (block) sampler are first described. Then, the sample quality assessment, using available indices proposed for soft soils, is presented. It is shown that sample quality varies with the stress paths and boundary conditions applied in laboratory tests. Finally, mechanical soil properties derived from specimens retrieved using the different samplers are used in the prediction of two classical problems in soil mechanics: the settlement and excess pore pressure response underneath an embankment as well as the settlement and bearing capacity of a shallow footing. These two examples are used here to highlight the consequences of poor sampling in practice.

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Large-scale shallow foundation load tests on soft clay – At the National Field Testing Facility (NFTF), Ballina, NSW, Australia

Cited by 15 publications

References 20 publications

Enhancement of bearing capacity from consolidation: due to changing strength or failure mechanism?

Enhancement of bearing capacity from consolidation: due to changing strength or failure mechanism?

Rock Stress Measurement Methods in Rock Mechanics—A Brief Overview

Effects of sampling disturbance in geotechnical design

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