Analytical and 3D numerical modelling of full-height bridge abutments constructed on pile foundations through soft soils

Keleşoğlu, M. Kubilay; Springman, Sarah M.

doi:10.1016/j.compgeo.2011.07.011

Cited by 29 publications

(5 citation statements)

References 19 publications

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“…The interchange ramp was constructed by a 4 m thick embankment, and it led to high lateral loads on the adjacent pile foundation. Apparently, the newly built subgrade would affect the existing piles and result in settlement, displacement, and even failure of the pile foundations [34].…”

Section: Field Testmentioning

confidence: 99%

Numerical Analysis of Passive Piles under Surcharge Load in Extensively Deep Soft Soil

Cai

et al. 2022

Buildings

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The three-dimensional finite difference method was used in this study to analyze the deformation and stresses of a passive pile under surcharge load in extensively deep soft soil. A three-dimensional numerical model was proposed and verified by a field test. The horizontal displacements of the pile agreed well with the field results. This study investigated the pile-foundation soil interaction, the load transfer mechanism, the excess pore water pressure (EPWP), and the horizontal resistance of the foundation soil. The results show that the soil in the corner of the loading area developed a large uplift deformation, while the center of the loading area developed a large settlement. The lateral displacement of the pile decreased sharply with the increase of the depth and increased with the surcharge load. The lateral displacement of the soil was negligible when the depth exceeded 30 m. The EPWP increased in a nonlinear way with the increase of the surcharge load and accumulated with the placement of the new lift. The distribution of the lateral earth pressure in the shallow soil layer was complex, and the negative value was observed under a high surcharge load due to the suction effect. The proportion coefficient of the horizontal resistance coefficient showed much smaller value in the situation of large lateral deformation and high surcharge load. The design code overestimated the horizontal resistance of the shallow foundation soil, which should be given attention for the design and analysis of the laterally loaded structures in extensively soft soil.

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Section: Field Testmentioning

confidence: 99%

Numerical Analysis of Passive Piles under Surcharge Load in Extensively Deep Soft Soil

Cai

et al. 2022

Buildings

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“…The bulk densities ( Figure 11) and lateral earth pressure coefficients ( Figure 12) obtained from the two software packages were analysed. The lateral earth pressure coefficient was calculated by dividing the total horizontal force on the wall by the force calculated by integrating the vertical stress determined from the bulk density distribution with depth over the area of the wall (analogous to the hydrostatic pressure), similar to Kelesoglo and Springman [29]. The comparison of the results showed that there was a slight difference in the initial densities but a more significant difference in the initial earth pressures due to the different injection methods used by the two software packages.…”

Section: Fig 10 Software Computational Time Comparisonmentioning

confidence: 99%

Discrete element model study into effects of particle shape on backfill response to cyclic loading behind an integral bridge abutment

et al. 2018

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The discrete element method, implemented in a modular GPU based framework that supports polyhedral shaped particles (Blaze-DEM), was used to investigate effects of particle shape on backfill response behind integral bridge abutments during temperature-induced displacement cycles. The rate and magnitude of horizontal stress build-up were found to be strongly related to particle sphericity. The stress build-up in particles of high sphericity was gradual and related to densification extending relatively far from the abutment. With increasing angularities, densification was localised near the abutment, but larger and more rapid stress build-up occurred, supported by particle reorientation and interlock developing further away.

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“…To date, however, insufficient attention has been paid to the performance of the passive battered pile resisting the embankment-induced lateral soil movement. The existing studies have mainly focused on the active battered pile [12,13] and existing passive vertical piles of buildings and bridges [5,14] adjacent to embankment constructions (Figure 1b). It has to be admitted that they have something in common; both active and passive battered piles have a better performance in resisting lateral load, whereas both passive battered pile and passive vertical piles are affected by soil movement and the distance between the pile and embankments [15].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Performances of Battered Piles Resisting Embankment-Induced Lateral Soil Movement

Zhou,

Zhu,

Wang

2023

Applied Sciences

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The performance of passive battered piles resisting the embankment-induced lateral soil movements may differ from that of the active battered pile and axially loaded existing vertical piles adjacent to embankment constructions. This study was part of a preliminary feasibility investigation for a reinforcement plan of an actual embankment project, aiming to experimentally investigate the performance of passive battered piles under embankment-induced lateral soil movement. To this end, a sequence of reduced-scale model tests of battered piles near the surcharges was first designed in sandy soil with a similarity ratio of 1:30. The effects of pile inclinations (β = −20°, −10°, 0°, +10°, and +20°), surcharge magnitudes, and constraint conditions at the pile tip (free-tip and fixed-tip) on the responses of passive battered piles were explored. Finally, the response characteristics of battered piles resisting the embankment-induced lateral soil movement were analyzed to clarify the working mechanism of these battered piles.

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Analytical and 3D numerical modelling of full-height bridge abutments constructed on pile foundations through soft soils

Cited by 29 publications

References 19 publications

Numerical Analysis of Passive Piles under Surcharge Load in Extensively Deep Soft Soil

Numerical Analysis of Passive Piles under Surcharge Load in Extensively Deep Soft Soil

Discrete element model study into effects of particle shape on backfill response to cyclic loading behind an integral bridge abutment

Experimental Investigation on Performances of Battered Piles Resisting Embankment-Induced Lateral Soil Movement

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