A Parametric Study of Effect On Single Pile Integrity Due to An Adjacent Excavation Induced Stress Release in Soft Clay

Authors

  • D. A. Mangnejo Department of Civil Engineering, Mehran University of Engineering and Technology, Pakistan
  • M. A. Soomro Department of Civil Engineering, Quaid-e-Awam University of Engineering, Science & Technology, Nawabshah, Pakistan
  • N. Mangi Department of Civil Engineering, Quaid-e-Awam University of Engineering, Science & Technology, Pakistan
  • I. A. Halepoto Department of Computer Systems Engineering, Quaid-e-Awam University of Engineering, Science & Technology, Nawabshah, Pakistan
  • I. A. Dahri Department of Civil Engineering, Mehran University of Engineering and Technology, Jamshoro, Pakistan
Volume: 8 | Issue: 4 | Pages: 3189-3193 | August 2018 | https://doi.org/10.48084/etasr.2105

Abstract

To gain new insights into single pile responses to adjacent excavations in soft ground, numerical parametric studies are carried out. An advanced hypoplastic (clay) constitutive model which takes account of small-strain stiffness is adopted. The effects of excavation depths (i.e. formation level) relative to pile were investigated by simulating the excavation near the pile shaft (i.e., He/Lp=0.67), next to (He/Lp=1.00) and below the pile toe (He/Lp=1.33). Among the three cases, the excavation in case of He/Lp=1.33 resulted in the largest pile settlement (i.e. 7.6%dp). On the other hand, the largest pile bending moment was induced in case of He/Lp=0.67.

Keywords:

parametric study, different excavation depths, soft clay, single pile

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[1]
D. A. Mangnejo, M. A. Soomro, N. Mangi, I. A. Halepoto, and I. A. Dahri, “A Parametric Study of Effect On Single Pile Integrity Due to An Adjacent Excavation Induced Stress Release in Soft Clay”, Eng. Technol. Appl. Sci. Res., vol. 8, no. 4, pp. 3189–3193, Aug. 2018.

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