An Experimental Study Evaluating the Negative Skin Friction on Single and Group of Close-ended Circular Pipe Piles Embedded in Gypseous Soil

Mohsen, Abeer. H.; Albusoda, Bushra S.

doi:10.1007/s40515-023-00349-4

Transp. Infrastruct. Geotech.

2023

DOI: 10.1007/s40515-023-00349-4

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An Experimental Study Evaluating the Negative Skin Friction on Single and Group of Close-ended Circular Pipe Piles Embedded in Gypseous Soil

Abeer. H. Mohsen,

Bushra S. Albusoda

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2024

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Cited by 1 publication

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Experimental Study of Negative Skin Friction of Pile Group Foundations for Offshore Wind Turbines on Artificial Islands

Yan,

Dai,

Chen

et al. 2024

JMSE

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Constructing offshore wind turbines on artificial islands is considered a viable option, but negative skin friction (NSF) is a significant adverse factor that cannot be ignored. The NSF adversely affects the bearing capacity of pile foundations. Currently, design methods for studying the impact of NSF group effects mainly rely on empirical approaches. Moreover, existing experimental studies do not simulate the NSF experienced by offshore wind turbine pile groups on artificial islands. In order to further explore the impact of pile group effects on NSF experienced by offshore wind turbine pile foundations on artificial islands, this study conducted indoor model tests on single piles and 3 × 3 rectangular pile groups in sandy soil under uniformly distributed loading on surrounding soil. The experiment measured the settlement of piles at various positions within single piles and rectangular pile groups, as well as the settlement of the soil surrounding the piles and the NSF. Through calculations, the experiment determined the neutral points and NSF group effect coefficients for each pile. The results indicate that densely spaced pile groups are advantageous in reducing settlement of the surrounding soil, thereby mitigating the adverse effects of NSF. Due to the influence of pile group effects, different positions within the group experience varying degrees of NSF. Consequently, in practical engineering applications, settlement of both the pile groups and the surrounding soil should be calculated separately. Furthermore, design considerations for the uplift forces and neutral points of piles at different positions within the pile group should adhere to distinct standards.

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Experimental Study of Negative Skin Friction of Pile Group Foundations for Offshore Wind Turbines on Artificial Islands

Yan,

Dai,

Chen

et al. 2024

JMSE

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An Experimental Study Evaluating the Negative Skin Friction on Single and Group of Close-ended Circular Pipe Piles Embedded in Gypseous Soil

Cited by 1 publication

References 23 publications

Experimental Study of Negative Skin Friction of Pile Group Foundations for Offshore Wind Turbines on Artificial Islands

Experimental Study of Negative Skin Friction of Pile Group Foundations for Offshore Wind Turbines on Artificial Islands

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