Centrifuge modeling of the pile foundation reinforcement on slopes subjected to uneven settlement

Ma, Lei; Yang, Kun; Yuan, Wenzhong; Li, Lingao; Wei, Yanxun; Ma, Changhui; Luo, Fengming; Zhang, Ga

doi:10.1007/s10064-020-01723-z

Cited by 11 publications

(4 citation statements)

References 26 publications

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“…Pile foundation can effectively control the deformation of the structure [3,4]. Due to excessive accumulated deformation of the foundation, many existing bridge pile foundations have the insufficient bearing capacity, affecting the superstructure's safety [5,6]. Especially for pile foundations in weak strata such as silt, silty clay and sandy soil, the insufficient bearing capacity of pile foundations is widespread and severe [7].…”

Section: Introductionmentioning

confidence: 99%

Field study on pile side grouting reinforcement for in-service pile foundation using segmental localized grouting

Sai,

Wang,

Zhang

et al. 2024

J. Phys.: Conf. Ser.

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Grouting is an effective method to enhance the bearing capacity of in-service pile foundations. The effect of optimizing grouting parameters for in-service pile foundation grouting reinforcement was verified through static load tests. The field tests of the pileless stratum show that the cement-sodium silicate slurry is more favourable for increasing the grouting pressure and more convenient to control the slurry diffusion than cement slurry. The grouting parameters of cement-sodium silicate slurry were determined according to the maximum grouting pressure and quantity. The slurry grouting parameters were cement slurry 1.6g/cm3 and cement slurry to sodium silicate ratio 2.29:1. Moreover, the effective range of segmental localized grouting reinforcement was detected by the resistivity method and in-situ standard penetration test, and the grouting position should be less than 2m from the side of the in-service pile foundation. Finally, it is found that pile side grouting can improve the bearing capacity of in-service pile foundation by 98% through static load test. The research results have reference value and guiding significance for the design and effect detection of pile foundation grouting reinforcement.

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Section: Introductionmentioning

confidence: 99%

Field study on pile side grouting reinforcement for in-service pile foundation using segmental localized grouting

Sai,

Wang,

Zhang

et al. 2024

J. Phys.: Conf. Ser.

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“…During the 1989 Tajik earthquake, the ground slid nearly 2 km due to liquefaction [10]. Many shake table tests [11][12][13], centrifuge model tests [14,15], and field tests [16] have been carried out to improve the understanding of seismic pile-soil interactions in lateral spreading. These tests mainly focus on soil pressure on the pile side [17], the inertial force of the superstructure, the p-y curve of the liquefiable site, and the influence of the upper non-liquefied layer on the response of single piles and group piles [18].…”

Section: Introductionmentioning

confidence: 99%

Seismic Pile–Soil Interaction Analysis Based on a Unified Thixotropic Fluid Model in Liquefiable Soil

Zhang

Guo

et al. 2023

Sustainability

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One of the challenges to the analysis of interactions between soil and piles in lateral spreading is the modeling of the progress generated by excess pore pressure and soil strength and stiffness degradation. In this paper, a pile–soil interaction analysis method that introduces the thixotropic-induced excess pore pressure model (TEPP) to describe the progressive development of the stress–strain rate connection of liquefying soil is proposed. The reliability of the method was verified by comparing the calculated results with that of the shake table test. Then, the parametric analyses of soil–pile interactions were carried out. The results show that the bending moment and horizontal displacement of pile foundations increase with the increase in superficial viscosity and inclination angle of the site. The horizontal dislocation and bending moment of the pile foundation increase with the decrease in loading frequency as a result of the property of amplifying low-frequency loads and filtering high-frequency loads of liquefied soil.

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“…The deformation of pile foundations under vertical loading, lateral loading, and inclined loading has been studied [20][21][22][23][24]. The method for predicting the deformation of pile foundations has been widely studied [25][26][27], and a numerical model with greater load conditions and a wider range has been further developed [28][29][30][31][32]. The mechanical characteristics of pile foundations have been studied by many scholars, and the state of pile foundations can be judged by theoretical calculations and numerical models.…”

Section: Introductionmentioning

confidence: 99%

Condition Diagnosis of Long-Span Bridge Pile Foundations Based on the Spatial Correlation of High-Density Strain Measurement Points

Liu

2021

Sustainability

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Pile foundations of long-span bridges are often deeply buried in soil, and their structural condition is difficult to accurately diagnose by conventional methods. To address this issue, a method for diagnosing the structural condition of bridge pile foundations based on the spatial correlation of high-density strain measurement points is proposed. The strain data of the high-density measurement points of a bridge pile foundation are obtained by using distributed optical fiber sensing technology based on Brillouin scattering, and then an algorithm for diagnosing the structural condition of the pile foundation based on geographically weighted regression analysis is presented. On this basis, aiming at the scour of the pile foundation of long-span bridges, an algorithm for estimating the scour depth of the pile foundation based on sliding plane clustering is proposed. Finally, the effectiveness of the proposed method is verified by numerical simulation and actual bridge data.

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Centrifuge modeling of the pile foundation reinforcement on slopes subjected to uneven settlement

Cited by 11 publications

References 26 publications

Field study on pile side grouting reinforcement for in-service pile foundation using segmental localized grouting

Field study on pile side grouting reinforcement for in-service pile foundation using segmental localized grouting

Seismic Pile–Soil Interaction Analysis Based on a Unified Thixotropic Fluid Model in Liquefiable Soil

Condition Diagnosis of Long-Span Bridge Pile Foundations Based on the Spatial Correlation of High-Density Strain Measurement Points

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