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Meng Fei1, Li-chun Wu2, Jia-sheng Zhang1

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This study presents a new method using stochastic medium theory to calculate ground movement from pile driving. The findings show vertical ground movement follows a normal distribution and horizontal movement follows an exponential function.

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Area of Science:

  • Geotechnical Engineering
  • Soil Mechanics
  • Foundation Engineering

Background:

  • Pile driving is a common construction method.
  • Accurately predicting ground movement is crucial for safety and efficiency.
  • Existing methods may require complex soil constitutive models.

Purpose of the Study:

  • To develop a simplified model for calculating ground movement induced by displacement piles.
  • To apply stochastic medium theory for predicting vertical and horizontal ground displacement.
  • To validate the model using field data.

Main Methods:

  • An axisymmetric model was developed.
  • Stochastic medium theory was employed to deduce ground movement functions.
  • Back analysis using field data was used to obtain model parameters.

Main Results:

  • Vertical ground movement was found to follow a normal distribution.
  • Horizontal ground movement was determined to be an exponential function.
  • The model accurately predicted ground movement in a case study.

Conclusions:

  • Stochastic medium theory provides a suitable and practical approach for calculating ground movement during pile driving.
  • The proposed method simplifies calculations by not requiring soil constitutive models or pile-soil contact considerations.