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Volume 37 Issue zk1
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GENG Gong-qiao, CAI Guo-jun, DUAN Wei-hong, ZOU Hai-feng, LIU Song-yu. Size effect and penetration rate of CPTU based on ABAQUS[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(zk1): 89-93. DOI: 10.11779/CJGE2015S1018
Citation: GENG Gong-qiao, CAI Guo-jun, DUAN Wei-hong, ZOU Hai-feng, LIU Song-yu. Size effect and penetration rate of CPTU based on ABAQUS[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(zk1): 89-93. DOI: 10.11779/CJGE2015S1018
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Size effect and penetration rate of CPTU based on ABAQUS

  • 1. Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China; 2. Jiangsu Key Laboratory of Urban Underground Engineering & Environmental Safety (Southeast University), Nanjing 210096, China;

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  • Received Date: March 25, 2015
  • Published Date: July 24, 2015
    Graphical Abstract
    • Abstract
  • The piezocone penetration test is one of the most widely used in-situ tests, but the research on the penetration mechanism has not been mature, which results in that empirical equations are always used to assess the behavior of soils with less accuracy. The ABAQUS is used to simulate the penetration process of the cone. The radius of cone is valued as 0.9, 1.8, 3.8 and 4.8 cm respectively to study the “size effect”. The rate of penetration is valued as 0.1, 1, 2, 3 and 4 cm/s to investigate its effect on the cone tip resistance. It is summarized that as the cone radius increases, the plastic zone area around the shaft and cone expands, the cone tip resistance decreases, and the maximum normalized horizontal affected distance decreases. Meanwhile, the steady-state cone resistance keeps constant with the increase of penetration rate without considering the excess pore pressure, but the steady-state condition is more easily reached.
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    • References (19)
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