Analysis on Bearing Capacity of CFG Pile Composite Foundation in Baotou

Wang, Ying Hao; Yu, Feng; Li, Shuo

doi:10.4028/www.scientific.net/amm.353-356.337

Cited by 3 publications

(3 citation statements)

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“…Under flexible foundation loads, the bearing capacity of a composite foundation equals the bearing capacity of a single pile [5]. At present, the methods used to predict carrying capacity include the Gaussian process regression prediction (GPR) [6], BP neural network algorithm [7][8][9][10], support vector machine method [11,12], least square support vector machine method, random forest method (RF) [13], polynomial regression method, and grey system method [14], among others. However, each algorithm has certain limitations.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Ultimate Bearing Capacity of Soil–Cement Mixed Pile Composite Foundation Using SA-IRMO-BPNN Model

Xi,

Jin,

et al. 2024

Mathematics

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The prediction of the ultimate bearing capacity (UBC) of composite foundations represents a critical application of test monitoring data within the field of intelligent geotechnical engineering. This paper introduces an effective combinational prediction algorithm, namely SA-IRMO-BP. By integrating the Improved Radial Movement Optimization (IRMO) algorithm with the simulated annealing (SA) algorithm, we develop a meta-heuristic optimization algorithm (SA-IRMO) to optimize the built-in weights and thresholds of backpropagation neural networks (BPNN). Leveraging this integrated prediction algorithm, we forecast the UBC of soil–cement mixed (SCM) pile composite foundations, yielding the following performance metrics: RMSE = 3.4626, MAE = 2.2712, R = 0.9978, VAF = 99.4339. These metrics substantiate the superior predictive performance of the proposed model. Furthermore, we utilize two distinct datasets to validate the generalizability of the prediction model presented herein, which carries significant implications for the safety and stability of civil engineering projects.

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Section: Introductionmentioning

confidence: 99%

Prediction of Ultimate Bearing Capacity of Soil–Cement Mixed Pile Composite Foundation Using SA-IRMO-BPNN Model

Xi,

Jin,

et al. 2024

Mathematics

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“…After a building has been constructed, permafrost will refreeze after a long time, and the building and permafrost will lie under the state of heat balance again. In this process, the thermal properties of permafrost also change unceasingly; the changing properties of permafrost bring a lot of unstable factors to the construction above ground and the bearing capacity of permafrost foundation (Nelson et al, 1992;Sun and Zhang 2007;Wang, 2014); in fact, it will make the disturbed permafrost unable to refreeze or result in the destruction of permafrost structure. Therefore, it has an important reality significance to research the effect of the construction process of building on the distribution and change law of the temperature field of permafrost.…”

Section: Introductionmentioning

confidence: 99%

Temperature analysis of CFG pile composite foundation in high latitudes and low altitude island permafrost

Liu

Yang

2019

IJSI

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Purpose Cement fly ash gravel (CFG) pile composite foundation is an effective and economic foundation treatment approach, which is significant to build foundation, subgrade construction, and so forth. The purpose of this paper is to present a research on the temperature behaviours of high-latitude and low-altitude island permafrost under CFG pile composite foundation treatment. Design/methodology/approach In the process of CFG pile construction, the temperature of permafrost and pile body was monitored using the temperature sensors. The influence of subgrade height and atmospheric temperature cycle on permafrost temperature was analysed by finite element simulation. Findings In the process of CFG pile construction, the change curve of pile temperature and the temperature of permafrost beside pile following time can be divided into six stages, and the duration of these stages is at least one month. The temperature variation of permafrost while constructing subgrade in FEM has a good agreement with the results of field temperature monitoring. The height of subgrade not only affects the maximum temperature increase of permafrost and the re-frozen time of permafrost after the construction of CFG pile composite foundation, but also affects the temperature variation amplitude of permafrost during atmospheric temperature cycle. Originality/value The research will provide a reference for the design on the CFG pile composite foundation used for island permafrost and guarantee the stability of the structure; thus, it has an important significance.

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“…It is necessary to introduce antiseismic design on the composite foundation. The dynamic studies of the composite foundation mainly concentrated on the numerical simulation applied finite element method software [2][3][4]. The dynamic characteristic and its effect factors of CFG pile and CS pile composite foundation were studied by in-site test of demolitions [5,6].…”

Section: Introductionmentioning

confidence: 99%

The Dynamic Characteristic Experimental Method on the Composite Foundation with Rigid-Flexible Compound Piles

Ding¹,

Wang²,

Zhao³

et al. 2013

OJCE

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Based on the idea of optimization design of pile type, the composite foundations, which include cememt-flyash-gaavel (for short CFG) long piles and cement-soil (for short CS) short piles, and CS piles with CFG core as well, are formed. The method of the site dynamic characteristic tests of the composite foundations is discussed. The test results show that fireworks bomb may replace demolitions as the vibration resource. Vibration time is about 0.1 sec. Horizontal vibration major frequency is at 22.476 -56.436 Hz, and vertical vibration major frequency is at 15.538 -55.884 Hz. The pile arrangements of the composite foundation in the same site have more effect on the acceleration peak value. From the point of vibration, the anti-seismic effect of the CS piles with CFG core is better than others.

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Analysis on Bearing Capacity of CFG Pile Composite Foundation in Baotou

Abstract: By uniting composite foundation with CFG pile composite foundation for a practical engineering project in Baotou, the bearing capacity of CFG pile in sandy soil and silty soil foundation were analyzed. The conclusion can be applied to the similar projects in the region of Inner Mongolia.

Cited by 3 publications

References 0 publications

Prediction of Ultimate Bearing Capacity of Soil–Cement Mixed Pile Composite Foundation Using SA-IRMO-BPNN Model

Prediction of Ultimate Bearing Capacity of Soil–Cement Mixed Pile Composite Foundation Using SA-IRMO-BPNN Model

Temperature analysis of CFG pile composite foundation in high latitudes and low altitude island permafrost

The Dynamic Characteristic Experimental Method on the Composite Foundation with Rigid-Flexible Compound Piles

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