Analysis of the Bearing Capacity of a Single Pile Based on an Analytical Solution of Pile–Soil Interaction in Expansive Soil

Jiang, Jie; Hou, Kaiwen; Ou, Xiaoduo

doi:10.1007/s10706-019-01126-2

Cited by 12 publications

(6 citation statements)

References 7 publications

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“…This solution was validated against model testing reported by Fan et al (2007), and showed similar results to the elastic method of Poulos and Davis (1980). An update to this method is presented by Jiang et al (2020) who consider the linear variation of the shear modulus of soil, G s , with depth (as opposed to the constant modulus used by Xiao et al (2011) and Fan et al (2007)). This had the effect of lowering the location of the maximum tensile force induced in the pile, but did not significantly affect the magnitude of this maximum; for the sake of simplicity, the formulation with constant shear modulus is used in this analysis.…”

Section: Frictional Methodsmentioning

confidence: 99%

Measurement of pile uplift forces due to soil heave in expansive clays

et al. 2022

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Piled foundations are widely used to limit the movement of foundations in expansive clays. These piles are subjected to large uplift forces as the clay swells (and downdrag forces when it shrinks). The appropriate method to estimate these forces is not well understood, and estimates from various methods presented in literature result in large variations. The uplift force generated in piles by soil heave was derived from strain measurements in full-scale field tests where a pile was installed in a highly expansive soil profile and flooded for several months. The results were compared to available theoretical estimates to comment on the most appropriate procedure to estimate the generated tension in the pile. The results showed that the use of an elastic solution related to the expected soil heave combined with a limiting shaft friction estimated from total stress capacity methods provided the most appropriate match to the measured results both in terms of the magnitude of the developed tension in the pile, and shape of the tension profile along the depth of the pile.

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Section: Frictional Methodsmentioning

confidence: 99%

Measurement of pile uplift forces due to soil heave in expansive clays

et al. 2022

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“…Cai Guojun [4] and others predicted the vertical bearing capacity of the pile foundation through CPTU test, carried out 8 groups of in-situ tests on the original site and calculated the classification and deformation of the soil layer and other parameters through CPTU software, and finally evaluated the engineering properties of the original foundation. Li Hongjiang [5] et al, taking the engineering project in the soft soil stratum area of the Taihu Lake Lake as the background and starting from the classical p-y curve, put forward a method to evaluate the horizontal bearing capacity of improved pile foundation based on CPTU test. The horizontal bearing capacity obtained by three test piles was compared with the horizontal bearing capacity of pile foundation tested by CPTU, and the results showed that the predicted results were in good agreement with the actual test results, this shows that the method has a high degree of coincidence when applied to practical projects.…”

Section: Bearing Capacity Analysis Of Pile Foundation Based On Cptu Testmentioning

confidence: 99%

Summary of Research on Horizontal Bearing Capacity of Pile Foundation in Soft Ground

Jiang¹

2023

FSE

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Based on the research theory and existing research methods of the horizontal bearing capacity of pile foundation in soft ground, this paper describes the current situation of the theory used to study the horizontal bearing capacity of pile foundation in soft ground at home and abroad, and then describes the current situation of the CPTU test method, DPP-BOTDA technology and numerical simulation methods applied to pile foundation monitoring, These research methods are proposed to provide some guidance for the follow-up research of similar projects.

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“…Expansive soil is a special type of cohesive and plastic soil, and its strength and volume are highly sensitive to the changing water content [1][2][3]. Expansive soils have been found in several countries and regions worldwide; for instance, the middle, west, and southwest regions of China [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of the uplift bearing behavior of pile foundations for transmission towers in expansive soil area

Zhong,

Lü

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Piles are commonly used as foundations for power transmission towers located in expansive soil areas. The strength of expansive soil is highly sensitive to the changing water content, which complicates the pile–soil interaction. In this study, a 3D elastoplastic finite element analysis of a typical pile foundation for a transmission tower in an expansive soil area was conducted to understand the effect of water content in expansive soil on the uplift bearing capacity of the pile foundation. The results that the failure mode of the pile foundation is almost unaffected by the water content. Shear failure was observed at the pile–soil interface, and, when the pile was pulled out, it lost its uplift bearing capacity. With the increasing water content of the soil, the ultimate uplift bearing capacity of the pile foundation exhibited a significant decreasing trend, whereas the displacement of soil around the pile became remarkable. The distribution of pile axial force and lateral frictional resistance during the uplift process was also evaluated. The pile axial force decreased gradually and at a higher rate with increasing depth. Once the pile reached the ultimate uplift bearing state, the pile lateral friction increased almost linearly with depth.

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Analysis of the Bearing Capacity of a Single Pile Based on an Analytical Solution of Pile–Soil Interaction in Expansive Soil

Cited by 12 publications

References 7 publications

Measurement of pile uplift forces due to soil heave in expansive clays

Measurement of pile uplift forces due to soil heave in expansive clays

Summary of Research on Horizontal Bearing Capacity of Pile Foundation in Soft Ground

Numerical simulation of the uplift bearing behavior of pile foundations for transmission towers in expansive soil area

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