Bearing Capacity Characteristics of Compacted Cement Stabilized Gravel Pile Composite Foundation

Gao, Fei; Cheng, Xuansheng; Zhao, Yanxu; Li, Qingfeng; Chen, Xiangjun

doi:10.1007/s42947-022-00226-2

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…A pile composite foundation is an effective means of weak foundation treatment, different pile types can cope with different types of natural foundations, and its construction is convenient and cost-effective; therefore, it has been widely used in the actual works of weak foundation treatment [1][2][3][4][5][6]. Cyclic dynamic loading is one of the main influencing factors of deformation produced by foundation soil.…”

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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show abstract

“…The depth could reach 5 m, and the bearing capacity of pile was significantly improved. The field test of pile foundation is also used to study the bearing capacity of a series of new pile foundations, such as large diameter belled concrete pile (Gao et al, 2019), cement stabilized gravel pile (Gao et al, 2022) and geothermal energy (Jiang et al, 2023). Hong and Chen (1985) carried out pile sinking test in composite foundation.…”

Section: Introductionmentioning

confidence: 99%

Study on bearing characteristics of super-long and super-large diameter pipe piles in silt foundation of alluvial plain of Yellow River

Zhang,

Ren,

Zhang

et al. 2024

Front. Earth Sci.

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In recent years, super-long and super-large diameter pipe piles have been gradually applied to the foundation in the Yellow River flood area. However, its bearing mechanism is not clear, especially the unclear bearing characteristics of the pile under the eccentric state, which limits its application and development. In this regard, this paper uses the method of combining field test and numerical simulation to analyze the bearing characteristics of super-long and super-large diameter pipe piles under different pile lengths, different pile diameters, different diameter-thickness ratios, and different offsets. Combined with the specific deviation form of the pipe pile, the calculation formula of the vertical ultimate bearing capacity of the super-long and super-long diameter pipe pile in the Yellow River flooding area under the influence of the construction effect is modified. The results show that when the length of the pipe pile changes, the vertical bearing capacity changes the most, and the vertical ultimate bearing capacity of the pipe pile increases linearly with the increase of the length of the pipe pile. When the wall thickness of the pipe pile increases, the vertical bearing capacity increases approximately linearly, but the reduction of the pile displacement decreases exponentially. The greater the deflection of the pipe pile, the smaller the vertical ultimate bearing capacity. When the deflection of the pipe pile is greater than 0.35°, the vertical ultimate bearing capacity decreases rapidly with the increase of the deflection. On the basis of the traditional formula, considering the deviation form of the pipe pile, the reduction coefficient of the bearing capacity correction formula of the super-long and super-large diameter pipe pile is proposed, and the correction formula is compared with the field example. It is proved that the formula can accurately calculate the bearing capacity of the super-long and super-large diameter pipe pile. The research results of this paper are of great significance to the application and promotion of super-long and super-large diameter pipe piles in the Yellow River flood area and the evaluation of vertical ultimate bearing capacity. At the same time, the research results of this paper can also provide a reference for the study of bearing characteristics of super-long and super-large diameter pipe piles in other foundations.

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Field test of lime soil compaction pile improving collapsible loess foundation

Xue,

Zhang,

Xiong

et al. 2024

Journal of Highway and Transportation Research and Development (English Edition)

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Bearing Capacity Characteristics of Compacted Cement Stabilized Gravel Pile Composite Foundation

Cited by 3 publications

References 19 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

Study on bearing characteristics of super-long and super-large diameter pipe piles in silt foundation of alluvial plain of Yellow River

Field test of lime soil compaction pile improving collapsible loess foundation

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