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Volume 35 Issue zk2
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MA Shao-kun1, 2, 3, SHAO Yu2, 3, HUANG Yan-zhen2, 3. Deformation of deep foundation pits due to excavation considering change of void ratio and permeability coefficient with depth[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk2): 940-944.
Citation: MA Shao-kun1, 2, 3, SHAO Yu2, 3, HUANG Yan-zhen2, 3. Deformation of deep foundation pits due to excavation considering change of void ratio and permeability coefficient with depth[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk2): 940-944.
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Deformation of deep foundation pits due to excavation considering change of void ratio and permeability coefficient with depth

  • 1. Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin University of Technology, Guilin 541004, China; 2. College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; 3. Key Laboratory of Disaster Prevention and Structural Safety, Guangxi University, Nanning 530004, China

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  • Received Date: July 16, 2013
  • Published Date: November 24, 2013
    Graphical Abstract
    • Abstract
  • Based on the effect of fluid-solid coupling, the subroutine is complied by using the user subroutine named VOIDRI of ABAQUS to achieve the void ratio nonlinearly changing with depth. Meanwhile, the coefficient of permeability changing with depth is set. According to the comparative analysis considering or ignoring the effect of fluid-solid coupling, many useful conclusions are drawn. The position of the maximum horizontal displacement of wall at each excavation step changes with the excavation depth and different supporting situations. The ground settlement considering the effect of fluid-solid coupling is greater than that ignoring the effect of fluid-solid coupling. The rebound at the bottom can significantly decrease due to the effect of fluid-solid coupling. However, the horizontal displacement of surface is less affected by fluid-solid coupling. As a result, these conclusions can be used as an important reference for predicting the deformation of foundation and supporting structure during excavation of deep pits.
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    • References (9)
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