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Numerical Simulation of a CAES Pile with Hypoplasticity

  • Wei WuEmail author
  • Shun Wang
  • Guofang Xu
  • Jilin Qi
  • Dichuan Zhang
  • Jong-Ryeol Kim
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

In this paper, we investigate the mechanical behaviour of a compressed air energy storage (CAES) pile through finite element analyses. A simple hypoplastic constitutive model is used for the soil surrounding the pile. The analyses are carried out on two numerical models, namely a plane-strain model and an axisymmetric model. The numerical results show that the internal pressure of the pile has only minor influence on the stress state in the surrounding soil. The radial deformation around the pile is much smaller than the vertical deformation during the pressurization. Moreover, an increase of the internal pressure induces pile expansion around a neutral point in middle of the pile. This gives rise to relative displacement at the pile-soil interface, leading to upward slip at the pile head and downward slip at pile tip. The shear stress between pile and soil is also considered.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Wei Wu
    • 1
    Email author
  • Shun Wang
    • 1
  • Guofang Xu
    • 2
  • Jilin Qi
    • 3
  • Dichuan Zhang
    • 4
  • Jong-Ryeol Kim
    • 4
  1. 1.Institute of Geotechnical EngineeringUniversity of Natural Resources and Life Sciences, ViennaViennaAustria
  2. 2.Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhanChina
  3. 3.College of Civil and Transportation EngineeringBeijing University of Civil Engineering and ArchitectureBeijingChina
  4. 4.Department of Civil EngineeringNazarbayev UniversityAstanaKazakhstan

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