Numerical investigation of dual-row batter pile wall in deep excavation

Wu, Yibin; Ye, Jinbi; Ge, Hongbin; Guang-qing, Liu; Liu, Haiwang

doi:10.1080/15376494.2021.1965268

Cited by 5 publications

(2 citation statements)

References 80 publications

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“…For a detailed description of the theoretical model, please see the literature [23]. In general, the model can capture the deformation behavior in foundation pit excavation well [24,25].…”

Section: Soil Constitutive Model and Support Structure Parametersmentioning

confidence: 99%

Numerical Study on the Effect and Mechanism of Supporting Pile Equivalent Calculation Methods in Pile–Anchor Support System

Liu,

Wang,

Liu

et al. 2023

Applied Sciences

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In numerical analysis, the pile equivalent calculation method plays a key role in foundation pit calculation results. However, the effect and mechanism of different pile equivalent calculation methods in the foundation pit has remained unclear. To solve this question, based on FLAC3D, four pile equivalent calculation methods were introduced into a typical pile–anchor pit. This research was carried out from the perspective of soil displacement and stress, special points’ stress paths, and the plastic zone. The results revealed that there was a remarkable influence on the calculation results for different pile equivalent calculation methods. Specifically, compared with structural pile elements, displacements near the pile were smaller in solid pile element mode. Moreover, with the increase in excavation depth, stress concentration appeared in the solid pile element mode. The solid support pile with the interface, compared to that without the interface, had less displacement but more stress concentration around the pile, which led the special points’ stress paths around the solid pile to become irregular. Regarding the structural pile elements, it is suggested that both modeling approaches had a similar effect. These findings could help to provide a deeper insight into pile–anchor foundation pit numerical analysis.

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“…For a detailed description of the theoretical model, please see the literature [23]. In general, the model can capture the deformation behavior in foundation pit excavation well [24,25].…”

Section: Soil Constitutive Model and Support Structure Parametersmentioning

confidence: 99%

Numerical Study on the Effect and Mechanism of Supporting Pile Equivalent Calculation Methods in Pile–Anchor Support System

Liu,

Wang,

Liu

et al. 2023

Applied Sciences

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“…The current research mainly focuses on the influence of construction and structural parameters of cofferdams on their own deformation, while relatively little research has been conducted on the influence of tunnel foundation pit construction or on the deformation characteristics of the double-row steel sheet pile cofferdam. Wu et al [24] used a finite difference model to evaluate the deformation of double-row steel sheet piles in deep foundation pit construction and summarized the rules that influenced the inclination angle, pile diameter, penetration depth, and row spacing of deformation. Finite element software was used to study the mutual influence between deep foundation pits and cofferdams and found that the excavation of foundation pits mainly caused the horizontal deformation on the lower part of the cofferdam pile foundation to increase [25,26].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Sheet Pile Cofferdam during Adjacent Open Cut Tunnel Construction near Lake Bottom

Cui

2023

Applied Sciences

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In water-related projects, the application of steel sheet pile cofferdams is becoming more and more widespread, and the influence of tunnel construction on the mechanical properties of adjacent cofferdams is important. In this study, the object of research was the mechanical properties of large-span steel sheet pile cofferdams. The open-cut tunnel project was located in Suzhou Yinshan Lake, China. According to the actual construction steps of the tunnel foundation pit, assuming that the soil was a small strain hardening soil model, combined with on-site monitoring data, a three-dimensional elastoplastic finite difference model was established. The results show that during tunnel construction, the maximum settlement of the cofferdam appeared at 0.27~0.53 m on the side of the foundation pit; the maximum horizontal displacement of the steel sheet pile occurred at the pile bottom of foundation pit side, and the seepage gradually increased during construction, eventually resulting in water gushing at the bottom of the foundation pit. After the completion of tunnel construction, the settlement value of the cofferdam presented a pattern that first increased and then decreased from the side of the foundation pit to the side of the adjacent lakeside; the steel cofferdam tilted toward the side of the foundation pit, with a maximum inclination angle of 3.37°. It should be pointed out that as the construction progressed, the axial force of the tie rods in the steel cofferdam changed from a U-shaped distribution to a V-shaped distribution. This study could provide a reference for the impact of tunnel foundation pit construction on adjacent steel cofferdam and could also provide a reference for the safety research of open-cut tunnel construction.

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Beneficial role of batter pile in slope under infinite uniform surcharge loading

Zeng

2021

Mechanics of Advanced Materials and Structures

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Numerical investigation of dual-row batter pile wall in deep excavation

Cited by 5 publications

References 80 publications

Numerical Study on the Effect and Mechanism of Supporting Pile Equivalent Calculation Methods in Pile–Anchor Support System

Numerical Study on the Effect and Mechanism of Supporting Pile Equivalent Calculation Methods in Pile–Anchor Support System

Mechanical Properties of Sheet Pile Cofferdam during Adjacent Open Cut Tunnel Construction near Lake Bottom

Beneficial role of batter pile in slope under infinite uniform surcharge loading

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