Simplified Deformation Analyses of a Single Pile Subjected to Different Deformation Modes of the Pit Enclosure Structure
Publication: International Journal of Geomechanics
Volume 23, Issue 4
Abstract
During the excavation of a foundation pit, differences in the stiffness of an enclosure structure with different supports may lead to different deformation modes of the enclosure structure. Without considering the effects of both pore–fluid and chemical reactions in the surrounding soils, the existing simplified analytical method is used to approximate pit sidewall deformation curves under four typical pit enclosure deformation modes, so that the horizontal displacement curves of a neighboring single pile are obtained by the image source method. Based on the results obtained from the simplified analytical method, it is concluded that both the maximum cumulative deformation value and the deformation pattern of a foundation pit enclosure structure can have nonnegligible effects on the horizontal displacement of the adjacent single pile. The maximum horizontal displacement of the single pile in the adjacent pit increases linearly with the control parameters of the pit enclosure structure, while it decreases nonlinearly with either an increase in the horizontal distance from the enclosure structure or a decrease in the excavation depth.
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Acknowledgments
The work presented in this study was financially supported by the Basic Public Welfare Research Projects in Zhejiang Province (Grant No. LGG21E080003) and the Joint Fund of Zhejiang Natural Science Foundation Committee Power China Huadong Engineering Corporation (Grant No. LHZ19E090001).
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Received: May 17, 2022
Accepted: Nov 27, 2022
Published online: Jan 23, 2023
Published in print: Apr 1, 2023
Discussion open until: Jun 23, 2023
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