Field and 3D Numerical Investigations of the Performances of Stiffened Deep Cement Mixing Column-Supported Embankments Built on Soft Soil

Phutthananon, Chana; Jongpradist, Pornkasem; Wonglert, Anucha; Kandavorawong, Kangwan; Sanboonsiri, Sasipim; Jamsawang, Pitthaya

doi:10.1007/s13369-022-07322-2

Cited by 20 publications

(2 citation statements)

References 58 publications

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“…During the construction of dam substations, different complex sites are often encountered. It is inevitable to encounter inclined soft soil foundation problems, and building a dam transformer substation on an inclined soft soil foundation is a challenging task for geotechnical engineers [1,2]. A reasonable reinforcement measure can improve the utilization rate of materials and save resources.…”

Section: Introductionmentioning

confidence: 99%

“…Zheng et al [14] proposed a limit equilibrium model combined with the genetic algorithm (LEM-GA) by compiling a MATLAB program, which was used to predict the safety factor and failure surface of rock slopes subjected to bending and toppling failure. Phutthananon et al [2,12] presented the results of full-scale field tests of embankments supported with wood-cored stiffened deep cement mixing (SDCM) columns and conventional DCM columns, confirmed that a less stiff material such as wood can be used as a core in SDCM columns, and evaluated the performance of a TDM pile-supported embankment (TPSE) over soft foundation subsoils using 3D numerical modeling. In addition, many scholars proposed novel processing methods.…”

Section: Introductionmentioning

confidence: 99%

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Research on Stability of Dam Substation on Inclined Soft Soil Foundation Reinforced by Pile Foundation

Lin,

Yu,

Luo

et al. 2023

Water

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For the construction of dam substations in coastal or mountainous areas, inclined soft soil foundations are very common. The unique engineering characteristics of inclined soft soil foundations can bring great difficulties to the construction of dam substations. In this paper, a pile foundation reinforcement dam slope model on an inclined soft soil foundation is established; the influence of different pile spacings, the pile length, and the soft soil foundation angle on the slope safety factor is studied; and the failure mechanism and stability of pile-supported dam slope foundation are analyzed. The research results indicate that pile foundation reinforcement can reduce the deformation of the dam slope foundation and improve stability. The pile layout has an important impact on stability, but a change in the pile spacing has little effect on the settlement surface at the bottom of the dam slope. The pile length has a significant impact on the safety of the slope within a certain range. The main stress area of the pile is 0–2 m above the pile, and its main deformation is the lateral deformation of the upper part of the pile. The research results of this article can provide parameter support and theoretical guidance for the construction of dam substations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on Stability of Dam Substation on Inclined Soft Soil Foundation Reinforced by Pile Foundation

Lin,

Yu,

Luo

et al. 2023

Water

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Theoretical Analysis and Field Investigation on Bearing Characteristics of the Long‐Core SDCM Pile Under Vertical Load in Multilayered Soil

Gong,

Dai,

Liu

et al. 2024

Num Anal Meth Geomechanics

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The long‐core SDCM pile is a typical type of stiffened deep cement mixing (SDCM) pile, it could be widely exploited in coastal geotechnical engineering because of its high bearing capacity, low settlement, green, and economic advantages. The long‐core SDCM pile is constituted by a PHC pipe pile and cemented soil, the height of the PHC pipe pile is upward than the depth of the cemented soil reinforcement. This study implements a theoretical approach to load transfer analysis of the long‐core SDCM pile under vertical load in layer soil. Herein, the shear constitutive models of the DCM pile‐PHC pipe pile interface and the fictitious soil pile‐PHC pipe pile interface are double exponential models, the compression constitutive model of the soil under the pile and the shear constitutive models of the DCM pile–soil interface and the fictitious soil pile–soil interface are ideal elastic–plastic models. The results obtained from this calculation model can match well with the data from on‐site tests and other analytical solutions. The theoretical model is used to analyze the key parameters LD/LP, DD/DP, Ec, and Ep of the long‐core SDCM pile. The LD/LP and DD/DP are the critical parameters affecting the bearing characteristics, and the minor settlement is affected by the changes of Ec and Ep.

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Process Parameters of HSCM Pile Formation in Marine Soft Soils

Zhao,

Zong,

Cen

et al. 2024

Geotech Geol Eng

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Field and 3D Numerical Investigations of the Performances of Stiffened Deep Cement Mixing Column-Supported Embankments Built on Soft Soil

Cited by 20 publications

References 58 publications

Research on Stability of Dam Substation on Inclined Soft Soil Foundation Reinforced by Pile Foundation

Research on Stability of Dam Substation on Inclined Soft Soil Foundation Reinforced by Pile Foundation

Theoretical Analysis and Field Investigation on Bearing Characteristics of the Long‐Core SDCM Pile Under Vertical Load in Multilayered Soil

Process Parameters of HSCM Pile Formation in Marine Soft Soils

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