Numerical and theoretical analysis of geosynthetic encased stone column composite foundation under cyclic loading

Gao, Junli; Xie, Xuelei; Wang, Jiajun; Liu, Lu; Zhang, Wen Jie

doi:10.1590/1679-78256979

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…Zhu et al [14,15] investigated the bearing characteristics of a pile-soil composite foundation under long-term cyclic loading by indoor dynamic modelling tests. Gao et al [16] established a discrete element model of a geosynthetic wrapped gravel pile composite foundation, investigated the deformation characteristics and pile-soil stress ratio of piles under different pile lengths and pile diameters, and analysed the lateral deformation characteristics of piles under cyclic loading. Chen Junsheng et al [17,18] conducted a comprehensive analysis of the consolidation deformation, pore pressure dissipation, pile-soil stress sharing, and bearing characteristics of a core-sand pile composite foundation through in situ observation and a test in the field.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Discrete Element Analysis of Bearing Characteristics of Concrete–Cored Sand–Gravel Pile Composite Foundation under Cyclic Dynamic Load

Ma,

Tang,

Lan

et al. 2024

Buildings

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Concrete-cored sand–gravel piles are a kind of composite pile formed by wrapping a concrete-cored pile with a sand–gravel shell, which has the advantages of both a rigid pile and bulk-material pile. The bearing characteristics of the concrete-cored sand–gravel pile composite foundation were investigated by establishing a three-dimensional discrete element numerical model for a cyclic dynamic loading test. The results show that the vertical stress of the core pile body fluctuates greatly at the beginning of loading, and the fluctuation amplitude decreases with the depth, and gradually tends to be stable in the middle and late stages, and the vertical-stress distribution is relatively uniform. The radial stress in the upper part of the core pile body fluctuates greatly, the fluctuation in the lower part is small, and the radial stress in each part of the core pile body gradually tends to be stable in the late-loading period. The radial stress factor of the core pile body reaches the stable speed with the foundation depth decreasing; the fluctuation amplitude of the pile-soil stress ratio decreases with the foundation depth and gradually tends to be stable with the increase in loading. The results of this study can provide a reference for the design and construction of a core sand pile composite foundation.

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Section: Introductionmentioning

confidence: 99%

Three-Dimensional Discrete Element Analysis of Bearing Characteristics of Concrete–Cored Sand–Gravel Pile Composite Foundation under Cyclic Dynamic Load

Ma,

Tang,

Lan

et al. 2024

Buildings

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“…Recently, lots of studies were conducted on the subgrade slope stability by the numerical calculation method [11][12][13][14][15][16]. In 1975, Zienkiewicz et al [17] first applied the strength reduction method to slope stability analysis.…”

Section: Introductionmentioning

confidence: 99%

Analytical and Numerical Study on the Stability of Highway Subgrade with Embedded Loading Berm in Soft Soil Area

et al. 2022

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Loading berm is an effective method for improving highway subgrade stability in soft soil areas. However, this method requires lots of construction space. It is not applicable in some areas with narrow construction spaces. To address this problem, an embedded loading berm (ELB) is proposed to improve highway subgrade stability, and the effects of ELB on the stability of the highway subgrade were investigated by analytical and numerical methods. Firstly, an analytical model was proposed to analyze the relationship between the ELB dimensions and subgrade stability factors. Then, numerical simulations were carried out to further reveal the stability factor of an actual subgrade with different ELBs. Lastly, ELB parameters’ sensitivity to the ELB stability factors was studied. The results show that the stability of the highway subgrade in soft soil areas can be significantly improved by the proposed ELB. With the loading berm width and height increasing, the subgrade stability factors can increase. The stability factors’ increase ratio with the increased ELB width is greater than that with the increased ELB height. The ELB parameter sensitivity order on the subgrade stability is as follows: width > height > density > cohesion > internal friction. In the design process, the ELB width and height can be mainly focused on. The research is significant for promoting the application of ELB in soft soil areas.

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Numerical and theoretical analysis of geosynthetic encased stone column composite foundation under cyclic loading

Cited by 2 publications

References 16 publications

Three-Dimensional Discrete Element Analysis of Bearing Characteristics of Concrete–Cored Sand–Gravel Pile Composite Foundation under Cyclic Dynamic Load

Three-Dimensional Discrete Element Analysis of Bearing Characteristics of Concrete–Cored Sand–Gravel Pile Composite Foundation under Cyclic Dynamic Load

Analytical and Numerical Study on the Stability of Highway Subgrade with Embedded Loading Berm in Soft Soil Area

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