Geomechanics and Engineering

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A parametric investigation on effect of supporting arrangements on earth retention system

  • Ali Murtaza Rasool (National Engineering Services Pakistan (NESPAK)) ;
  • Fawad S. Niazi (Department of Civil and Mechanical Engineering, Purdue University) ;
  • Tauqir Ahmed (Department of Civil Engineering, National University of Computer and Emerging Sciences) ;
  • Mubashir Aziz (Department of Civil and Environmental Engineering, King Fahd University of Petroleum and Minerals)
  • Received : 2022.01.13
  • Accepted : 2023.04.18
  • Published : 2023.06.10
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Abstract

The effects of various supporting arrangements have been investigated on an excavation support system using a numerical tool. The purpose of providing different supporting arrangements was to limit the pile wall deflection in the range of 0.5% to 1% of the excavation depth. Firstly, a deep excavation supported by sheet pile wall was modeled and the effects of sheet pile wall thickness, excavation depth and distance to adjacent footings from sheet pile wall face were explored on the soil deformation and wall deflection. Further analysis was performed considering six different arrangements of tieback anchors and struts in order to limit the wall deflections. Case-01 represents the basic excavation geometry supported by sheet pile wall only. In Case-02, sheet pile wall was supported by struts. Case-03 is a sheet pile wall supported by tieback anchors. Likewise, for the Cases 04, 05 and 06, different arrangements of struts and tieback anchors were used. Finally, the effects of different supporting arrangements on soil deformation, sheet pile wall deflection, bending moments and anchor forces have been presented.

Keywords

Acknowledgement

Researchers from National Engineering Services Pakistan (NESPAK) Lahore Pakistan, Purdue University, Fort Wayne USA, National University of Computer and Emerging Sciences Lahore Pakistan, and King Fahd University of Petroleum and Minerals Dhahran Saudi Arabia are highly acknowledged for providing technical assistance.

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