Numerical Analysis on the Performance of a Cushioned Foundation with a Mixture of Both Rigid and Flexible Piles

Kai-fu, Liu; Xie, Xuansong; Shang-wei, Shi; Xiang-rong, Zhu

doi:10.1061/41025(338)11

Cited by 8 publications

(2 citation statements)

References 6 publications

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“…Cushion is the essential part of composite foundation, which can share part of the upper load to the soil around the pile and allow the surrounding soil to give full play of the bearing capacity. For this reason, it can greatly reduce the settlement and avoid the damage caused by the stress concentration of the pile top on the upper components [29]. The influence of cushion thickness on settlement is shown in Figure 18.…”

Section: Analysis Of Influence Of Cushion Thickness On Bearing Capacitymentioning

confidence: 99%

Study on Bearing Capacity of Tank Foundation with Alternatively Arranged Vortex-Compression Nodular Piles

et al. 2020

Energies

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Types of tapered piles are widely applied in tank foundation consolidation, but their inherent deficiencies in design and construction limit their further promotion. Vortex compression pile is a novel nodular pile. Compared with the traditional equal-section pile, vortex compression nodular pile is featured by stronger bearing capacity and slighter settlement. In this paper, the model test results showed that vortex compression nodular pile can greatly improve the bearing capacity and reduce the settlement. Through the finite element software ABAQUS analysis the bearing characteristics of equal-section pile foundation and vortex-compression nodular pile foundation were compared. The three-dimensional solid model was established by ABAQUS finite element software. The impact of cushion modulus, cushion thickness, vertical load, pile modulus, soil modulus around the pile on the bearing capacity of the vortex-compression nodular pile foundation were studied.

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Section: Analysis Of Influence Of Cushion Thickness On Bearing Capacitymentioning

confidence: 99%

Study on Bearing Capacity of Tank Foundation with Alternatively Arranged Vortex-Compression Nodular Piles

et al. 2020

Energies

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“…By performing staged load tests, Yang et al [13] analyzed the characteristics of the settlement of the pile composite foundation in soft soils and obtained the variational behavior of settlement with time. On the basis of the shear displacement method, Qiu and Zhu [14] discussed the distributions of the pile top settlement, pile shaft stress, pile side friction, and neutral surface. Zhao et al [15] investigated the deformation mechanism of gravel pile composite foundations under flexible bases and deduced the differential equation controlling the pile bulging deformation.…”

Section: Introductionmentioning

confidence: 99%

Settlement Behavior of Composite Foundation with Deep Mixed Piles Supporting Highway Subgrades in Water-Rich Flood Plains

Liu

Guo

et al. 2023

Water

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The settlement behavior of composite foundations plays an important role in the serviceability and stability of the subgrade or other infrastructures supporting the foundation. However, in water-rich flood plains, due to the complexity of the soft soil properties, the settlement behavior has not been well understood. The objective of this study is to investigate the effects of various key factors on the settlement behavior of composite foundations with deep mixed piles supporting highway subgrade in water-rich flood plains. The investigated subgrade is in operation, and the vehicle load is taken into account. The G347AH Project is considered in this study. Several typical models for predicting composite foundation settlements are discussed. By performing three-dimensional finite difference analysis, a comparison is made between the settlement behavior of the natural foundation and the composite foundation with deep mixed piles. Based on the single factor sensitivity analysis and the multi-factor orthogonal experimental design, the effects of pile length, pile diameter, pile spacing, pile elasticity modulus, cushion elasticity modulus, and cushion thickness on the composite foundation settlement are captured. It is found that among these factors, the degree of influence of pile length is superior. The composite foundation settlements predicted by the models agree well with the field-monitoring data, with the error being about 8.42% and 6.38%, respectively, at two monitoring sections. The research conducted in this paper can effectively reduce the probability of various settlement-related disasters occurring on highway subgrades in water-rich flood plains. Moreover, the research has important theoretical guidance for design optimization in terms of settlement control of highway subgrades in soft soil areas.

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Parametric study of under-reamed piled ring foundation in soft clay

Singh,

Kumar

2024

Sādhanā

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Numerical Analysis on the Performance of a Cushioned Foundation with a Mixture of Both Rigid and Flexible Piles

Cited by 8 publications

References 6 publications

Study on Bearing Capacity of Tank Foundation with Alternatively Arranged Vortex-Compression Nodular Piles

Study on Bearing Capacity of Tank Foundation with Alternatively Arranged Vortex-Compression Nodular Piles

Settlement Behavior of Composite Foundation with Deep Mixed Piles Supporting Highway Subgrades in Water-Rich Flood Plains

Parametric study of under-reamed piled ring foundation in soft clay

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