Parametric analysis and multi-objective optimization of the coupling beam pile structure foundation

You-sheng, Deng; Keqin, Zhang; Yao, Zhigang; Zhao, Haitao; Li, Long

doi:10.1016/j.oceaneng.2023.114724

Cited by 8 publications

(2 citation statements)

References 15 publications

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“…The test prototype selected in this study is the CFG piles. The elastic modulus of the CFG pile is small and can be simulated by using beech wood for the model test [33,34]. In this study, the loess from the Xi'an section of the Xikang high-speed railroad project is fine-grained loess after screening.…”

Section: Materials Propertiesmentioning

confidence: 99%

Research on Static and Dynamic Loading Performance of Geosynthetic Reinforced and Pile-Supported Embankment

Deng,

Zhao,

et al. 2023

Applied Sciences

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Geosynthetic reinforced and pile-supported (GRPS) provide an economic and effective solution for embankments. To investigate the load-bearing mechanism of the GRPS embankment in loess, experimental and numerical studies under static and dynamic loading are carried out. The characteristics of soil arch effect and tensile membrane effect of GPRS embankment under static and dynamic loading are revealed by analyzing pile–soil stress ratio, tension of geogrid, and stress distribution of pile. The test results show that the pile–soil stress ratio under dynamic loading is reduced by 2.3 compared with static loading. In comparison to static load, the soil arching effect is attenuated under dynamic load, and the stronger the static load soil arching effect, the greater the degree of weakening under dynamic load. In addition, under dynamic loading, the tensioned membrane effect is still effective, but its enhancement is not as pronounced as under static loading. Furthermore, by using the finite element software, the numerical model is developed and validated with the experimental results. The parameter analysis of the load-bearing performance of the GRPS embankment is accomplished using the finite element model as well.

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Section: Materials Propertiesmentioning

confidence: 99%

Research on Static and Dynamic Loading Performance of Geosynthetic Reinforced and Pile-Supported Embankment

Deng,

Zhao,

et al. 2023

Applied Sciences

Self Cite

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“…If piles are connected to form a group of piles, the position of the connecting beam and the axial force generated by the load also affect the synergistic effect between multiple piles. The transfer of load can cause plastic damage to the beam, which requires consideration of the beam's position and construction excavation sequence to reduce the internal force of the beam structure and ensure the effectiveness of the support structure [22][23][24]. When the supporting structure is complex, using numerical simulation methods to study foundation pit excavation is easier to achieve than using on-site experimental methods [25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation Study on Application of T-Shaped Composite Pile Support System in Super-Large Foundation Pit Support Engineering

Lu,

Jiang

2023

Applied Sciences

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To reduce the impact of the one-time excavation of deep and large foundation pits on nearby subway tunnels, the excavation should be performed separately; thus, a T-shaped pile support system was studied. First, several foundation pit support structures were compared and selected, and a pile support system was proposed. In terms of space, a T-shaped support structure was formed to reduce the spatial requirements of the foundation pit. Through finite element software, a 1:1 restoration of the foundation pit using a T-shaped pile support system was carried out. The stress characteristics and support effect of the support structure were studied under two working conditions of symmetric and asymmetric excavation. The study found that there was a central effect on the foundation pit using a T-shaped pile support system, that is, the support piles farther away from the center of the T-shaped structure gradually increased the maximum pile bending moment and displacement owing to the constraints of vertical piles and the influence of the pit angle effect, respectively. In the case of symmetrical excavation, the T-shaped structure was simplified into a triangular structure, and the stress form of this type of structure could be reduced to a cantilever double-row pile structure, which met the requirements of pit excavation. The application of a T-shaped pile support structure can provide new design ideas for foundation pit engineering near regional subway lines.

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Experimental research on bearing characteristics of coal gangue pile–net composite foundation

Deng,

Yao,

Feng

et al. 2024

J Mater Cycles Waste Manag

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Parametric analysis and multi-objective optimization of the coupling beam pile structure foundation

Cited by 8 publications

References 15 publications

Research on Static and Dynamic Loading Performance of Geosynthetic Reinforced and Pile-Supported Embankment

Research on Static and Dynamic Loading Performance of Geosynthetic Reinforced and Pile-Supported Embankment

Numerical Simulation Study on Application of T-Shaped Composite Pile Support System in Super-Large Foundation Pit Support Engineering

Experimental research on bearing characteristics of coal gangue pile–net composite foundation

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