Numerical study of the deformation performance and failure mechanisms of TDM pile-supported embankments

Phutthananon, Chana; Jongpradist, Pornkasem; Dias, Daniel; Jamsawang, Pitthaya

doi:10.1016/j.trgeo.2021.100623

Cited by 19 publications

(4 citation statements)

References 73 publications

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“…Hydrostatic groundwater conditions were applied at the ground surface. Additionally, the underground piezometric pressure resulting from deep well pumping, which caused a drawdown of pore water pressure, was modeled 24 m below the ground surface, in accordance with the study conducted by Phutthananon et al [12].…”

Section: Materials Models and Parametersmentioning

confidence: 75%

“…Figure 5 illustrates the validation of the simulated results using the measured field settlement presented by Suwansawat [14]. Referring to the detailed information on TBM mentioned in the previous section, a uniform contraction ratio of 1.3% was applied to achieve the corresponding outcome, which corresponds to the value adopted in previous studies [11,12,13].…”

Section: Calibration Of Tunneling Simulationmentioning

confidence: 99%

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Comparative evaluations of building impact assessment due to adjacent tunneling

Ekaksorn,

Chayaroon,

Phutthananon

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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In dense urban areas, tunneling can potentially lead to structural damage or compromise the integrity of nearby buildings, thus necessitating a thorough evaluation of its impact during the design phase. Various engineering methods exist to estimate building responses to adjacent tunneling, each varying in complexity. These methods yield different outcomes, such as settlement magnitude and behavior. This study examines pile settlements, differential pile settlement, and angular distortion of a building through three distinct analysis methods. These involve two-step methods of soil-structure interaction of a building and tunneling from (1) the corresponding greenfield ground, (2) piles embedded in the ground, and (3) piles under loading. The results were then compared and discussed. Based on the obtained results, the method for considering piles under loading can be regarded an effective method for providing a conservative evaluation.

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Section: Materials Models and Parametersmentioning

confidence: 75%

Section: Calibration Of Tunneling Simulationmentioning

confidence: 99%

Comparative evaluations of building impact assessment due to adjacent tunneling

Ekaksorn,

Chayaroon,

Phutthananon

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…PLAXIS may be used to model various embankment loading scenarios, including embankment height, surcharge load, loading duration and construction sequence. PLAXIS is a three-dimensional finite element program designed specifically for geotechnical problem analysis [18][19][20][21]. During the embankment loading process, examine the soft clay mass settlements, lateral displacements and stress distribution.…”

Section: Introductionmentioning

confidence: 99%

A study on the behaviour of soft clay under embankment loading

Srijan,

Harshit,

Abhivek

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Soil reinforcement is technique to improve the engineering characteristics of soil. Several reinforcement methods are available for stabilizing the problematic soils (soft clay) like the use of Portland cement, lime, fly ash, ground freeing, jet grouting, prefabricated vertical drains, stone columns and thermal methods. Recently basal reinforcements are also being used as a method to improve the bearing capacity and settlement characteristics of the soft soil. The reinforcement consists of one or more horizontal layers of geosynthetic reinforcement installed at a base of the embankment. A basal reinforced embankment can be used for the construction of road or a railway when a traditional construction method would take a lot of time for construction. In this paper a numerical analysis was conducted first to study the behaviour of virgin soft clay supporting the embankment. Further a sand layer was installed just below the embankment and basal reinforcement was provided at the centre of this sand layer to study its influence on the changed behaviour of soft clay. A comparison was made between the two and the requirement of further study has also been suggested.

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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%

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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Numerical study of the deformation performance and failure mechanisms of TDM pile-supported embankments

Cited by 19 publications

References 73 publications

Comparative evaluations of building impact assessment due to adjacent tunneling

Comparative evaluations of building impact assessment due to adjacent tunneling

A study on the behaviour of soft clay under embankment loading

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

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