Quantifying the influence of pile diameter on the load transfer curves of laterally loaded monopile in sand

Wang, H.; Wang, L.Z.; Hong, Yi; He, Bin; Zhu, Ronghua

doi:10.1016/j.apor.2020.102196

Cited by 45 publications

(18 citation statements)

References 38 publications

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“…Different or even "wrong" p-y models can still give reasonable prediction of the bending moment profiles. The same observation was also reported by Wang et al [18].…”

Section: Parametric Study Of Lateral Response Of Rigid Piles In Sand 41 Influence Of Pile Diameter and Aspect Ratiosupporting

confidence: 89%

“…As shown in the figure, both the API and PISA p-y models significantly overestimated the pile response. The overestimation of the API model is also reported in Wang et al [18]. However, it is interesting to see that while the p-y models in API and PISA are defined differently, the predicted pile loaddeflection response is very similar.…”

Section: Validation Of the Fe Modelsupporting

confidence: 75%

“…Different or even "wrong" p-y models can still give reasonable prediction of the bending moment profiles. The same observation was also reported by Wang et al [18]. To understand the pile-soil interaction of different diameter and aspect ratio monopiles under lateral loading, the lateral soil resistance profiles of two typical-diameter monopiles at different rotations and under different loading eccentricities were extracted from the numerical simulation results and are presented in Figure 9.…”

Section: Parametric Study Of Lateral Response Of Rigid Piles In Sand 41 Influence Of Pile Diameter and Aspect Ratiosupporting

confidence: 68%

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Influence of Pile Diameter and Aspect Ratio on the Lateral Response of Monopiles in Sand with Different Relative Densities

Wang

Hong

et al. 2021

JMSE

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The large-diameter monopiles are the most preferred foundation used in offshore wind farms. However, the influence of pile diameter and aspect ratio on the lateral bearing behavior of monopiles in sand with different relative densities has not been systematically studied. This study presents a series of well-calibrated finite-element (FE) analyses using an advanced state dependent constitutive model. The FE model was first validated against the centrifuge tests on the large-diameter monopiles. Parametric studies were performed on rigid piles with different diameters (D = 4–10 m) and aspect ratios (L/D = 3–7.5) under a wide range of loading heights (e = 5–100 m) in sands with different relative densities (Dr = 40%, 65%, 80%). The API and PISA p-y models were systematically compared and evaluated against the FE simulation results. The numerical results revealed a rigid rotation failure mechanism of the rigid pile, which is independent of pile diameter and aspect ratio. The computed soil pressure coefficient (K = p/Dσ′v) of different diameter piles at same rotation is a function of z/L (z is depth) rather than z/D. The force–moment diagrams at different deflections were quantified in sands of different relative density. Based on the observed pile–soil interaction mechanism, a simple design model was proposed to calculate the combined capacity of rigid piles.

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“…Different or even "wrong" p-y models can still give reasonable prediction of the bending moment profiles. The same observation was also reported by Wang et al [18].…”

Section: Parametric Study Of Lateral Response Of Rigid Piles In Sand 41 Influence Of Pile Diameter and Aspect Ratiosupporting

confidence: 89%

Section: Validation Of the Fe Modelsupporting

confidence: 75%

Section: Parametric Study Of Lateral Response Of Rigid Piles In Sand 41 Influence Of Pile Diameter and Aspect Ratiosupporting

confidence: 68%

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Influence of Pile Diameter and Aspect Ratio on the Lateral Response of Monopiles in Sand with Different Relative Densities

Wang

Hong

et al. 2021

JMSE

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“…The failure loads of D = 30 mm were 23.52, 30.87, and 35.28 N, respectively, which are 45.4 , 43.2 , and 44 higher than those of D = 20 mm Consistent with the literature 31 . Wang et al 32 concluded that as the pile diameter increases, when the pile fails, the soil will change from a shallow wedge failure to a combination of shallow wedge failure and deep rotating soil flow. Therefore, the anchor pile uplift resistance capacity will not increase with the increase in pile diameter by an equal margin.…”

Section: Resultsmentioning

confidence: 99%

Uplift resistance capacity of anchor piles used in marine aquaculture

Gui

Kong

Feng

et al. 2021

Sci Rep

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Anchor piles are widely used in marine aquaculture, and the safety is largely determined by the uplift resistance capacity,especially in harsh ocean environments. However, there are few practical guides to the design and installation of the anchor piles for mooring the body of marine aquaculture equipment. Laboratory experiments were conducted to investigate the effect of the initial tension angle, pile diameter, embedded depth, and pile configuration on the uplift resistance capacity of anchor piles under oblique loads. CCD camera and load cell were utilized to measure the corresponding displacement and load, respectively. The results show that increasing the initial tension angle of circular and square single piles can significantly improve the uplift resistance capacity. The failure load of the square single pile was slightly higher than that of the circular single pile. Increasing the pile diameter can effectively improve the failure load and delay the development speed of the pile top displacement. Increasing the embedded depth can effectively improve the failure load and increase the lateral displacement of the pile top. The uplift resistance capacity of the dual anchor piles was better than that of the single anchor piles. The layout configuration has little effect on the failure load, but has a large effect on the displacement development.

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“…The failure loads of D = 30 mm were 23.52, 30.87, and 35.28 N, respectively, which are 45.4%, 43.2%, and 44% higher than those of D = 20 mm. Wang et al 31 concluded that as the pile diameter increases, when the pile fails, the soil will change from a shallow wedge failure to a combination of shallow wedge failure and deep rotating soil flow; therefore, the anchor pile uplift resistance capacity will not increase with the in-crease in pile diameter by an equal margin. Although the number of pile diameter sam-ples in this experiment was not sufficient, the improvement in the failure load of D = 30 mm compared to D = 20 mm was significantly smaller than that of D = 20 mm compared to D = 10 mm.…”

Section: Effect Of Pile Diameter On Uplift Resistance Capacitymentioning

confidence: 99%

Uplift Resistance Capacity of Anchor Piles used in Marine Aquaculture

Gui

Kong

Ding

et al. 2021

Preprint

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Anchor piles are widely used in marine aquaculture, and their uplift resistance capacity largely determines their safety, especially in harsh ocean environments. However, a practical guide on its design and installation is wanting. Laboratory experiments were conducted to investigate the effect of the initial tension angle, pile diameter, embedded depth, and pile configuration on the uplift resistance capacity of anchor piles for marine aquaculture under oblique loads. The results show that increasing the initial tension angle of circular and square single piles can significantly improve the uplift resistance capacity. The failure load of the square single pile was slightly higher than that of the circular single pile. Increasing the pile diameter can effectively improve the failure load and delay the development speed of the pile top displacement. Increasing the embedded depth can effectively improve the failure load and increase the lateral displacement of the pile top. The uplift resistance capacity of the dual anchor piles was better than that of the single anchor piles. The layout configuration has little effect on the failure load, but has a large effect on the displacement development.

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Quantifying the influence of pile diameter on the load transfer curves of laterally loaded monopile in sand

Cited by 45 publications

References 38 publications

Influence of Pile Diameter and Aspect Ratio on the Lateral Response of Monopiles in Sand with Different Relative Densities

Influence of Pile Diameter and Aspect Ratio on the Lateral Response of Monopiles in Sand with Different Relative Densities

Uplift resistance capacity of anchor piles used in marine aquaculture

Uplift Resistance Capacity of Anchor Piles used in Marine Aquaculture

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