3-D elastic analysis of vertical piles subjected to “passive” loadings

Xu, K. J.; Poulos, Harry G.

doi:10.1016/s0266-352x(00)00024-0

Cited by 70 publications

(32 citation statements)

References 15 publications

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“…The analysis of ground movement effects on groups of piles has been reported by several authors, for example, Kuwabara and Poulos (1989), Teh and Wong (1993), Chow et al (1990), Xu and Poulos (2001). All these authors have found that under purely elastic conditions, group effects tend to be beneficial to the pile response as compared to single isolated piles, i.e.…”

Section: Group Effectsmentioning

confidence: 90%

Ground Movements – A Hidden Source of Loading on Deep Foundations

Poulos

2007

DFI Journal - The Journal of the Deep Foundations Institute

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Section: Group Effectsmentioning

confidence: 90%

Ground Movements – A Hidden Source of Loading on Deep Foundations

Poulos

2007

DFI Journal - The Journal of the Deep Foundations Institute

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“…The analysis on the correction factor is valuable in leading to a better understanding of the influence of the reaction piles on the test pile behavior. Present methods considering the interactive effect among piles mainly include the load transfer method (Kraft et al, 1981;Guo, 2001), the elastic theory method (Poulos and Davis, 1980;Mylonakis and Gazetas, 1998;Poulos, 2001), the method based on energy principles (Klar and Leung, 2009), the finite element method (Xu and Poulos, 2001;Reul and Randolph, 2003;de Sanctis and Mandolini, 2006) and various empirical methods. However, these interaction models are commonly utilized for piles of identical dimensions, and not suitable for piles with different diameters.…”

Section: Introductionmentioning

confidence: 99%

Influence of reaction piles on test pile response in a static load test

Zhang

2013

J. Zhejiang Univ. Sci. A

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This work presents a new analytical method to analyze the influence of reaction piles on the test pile response in a static load test. In our method, the interactive effect between soil and pile is simulated using independent springs and the shear displacement method is adopted to analyze the influence of reaction piles on test pile response. Moreover, the influence of the sheltering effect between reaction piles and test pile on the test pile response is taken into account. Two cases are analyzed to verify the rationality and efficiency of the present method. This method can be easily extended to a nonlinear response of an influenced test pile embedded in a multilayered soil, and the validity is also demonstrated using centrifuge model tests and a computer program presented in the literature. The present analyses indicate that the proposed method will lead to an underestimation of the test pile settlement in a static load test if the influence of the presence of reaction piles on the test pile response is neglected.

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“…Significant research has been carried out to estimate additional forces and deformations in existing piles induced by tunneling. The responses of piles subject to the ground movement induced by tunneling were assessed based on laboratory experiments 1–3, force‐controlled finite element methods (FCFEM) 4, 5, deformation‐controlled finite element methods (DCFEM) 6, 7, and simplified two‐stage methods 8–12. The two‐stage method proposed by Xu and Poulos 8 and Loganathan et al 9 employs the boundary element method; however, this has not been extended to layered soils.…”

Section: Introductionmentioning

confidence: 99%

“…The responses of piles subject to the ground movement induced by tunneling were assessed based on laboratory experiments 1–3, force‐controlled finite element methods (FCFEM) 4, 5, deformation‐controlled finite element methods (DCFEM) 6, 7, and simplified two‐stage methods 8–12. The two‐stage method proposed by Xu and Poulos 8 and Loganathan et al 9 employs the boundary element method; however, this has not been extended to layered soils. Kitiyodom et al 10, 11 and Huang et al 12 adopted a Winkler subgrade reaction model that did not consider the vertical interaction between the nodes in the same pile.…”

Section: Introductionmentioning

confidence: 99%

Vertical response of pile raft foundations subjected to tunneling‐induced ground movements in layered soil

Huang

2011

Num Anal Meth Geomechanics

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SUMMARYA simplified analysis method has been developed to estimate the vertical movement and load distribution of pile raft foundations subjected to ground movements induced by tunneling based on a two-stage method. In this method, the Loganathan-Polous analytical solution is used to estimate the free soil movement induced by tunneling in the first stage. In the second stage, composing the soil movement to the pile, the governing equilibrium equations of piles are solved by the finite difference method. The interactions between structural members (such as pile-soil, pile-raft, raft-soil, and pile-pile) are modeled based on the elastic theory method of a layered half-space. The validity of the proposed method is verified through comparisons with some published solutions for single piles, pile groups, and pile rafts subjected to ground movements induced by tunneling. Good agreements between these solutions are demonstrated. The method is also used for a parametric study to develop a better understanding of the behavior of pile rafts influenced by tunneling operation in layered soil foundations.

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3-D elastic analysis of vertical piles subjected to “passive” loadings

Cited by 70 publications

References 15 publications

Ground Movements – A Hidden Source of Loading on Deep Foundations

Ground Movements – A Hidden Source of Loading on Deep Foundations

Influence of reaction piles on test pile response in a static load test

Vertical response of pile raft foundations subjected to tunneling‐induced ground movements in layered soil

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