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Geomechanics and Engineering Volume 33, Number 5, June10 2023 , pages 507-518 DOI: https://doi.org/10.12989/gae.2023.33.5.507 |
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A parametric investigation on effect of supporting arrangements on earth retention system |
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Ali Murtaza Rasool, Fawad S. Niazi, Tauqir Ahmed and Mubashir Aziz
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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. | ||
| Key Words | ||
| deep excavation; excavation support system; FEM analysis; struts; tieback anchors | ||
| Address | ||
| Ali Murtaza Rasool:National Engineering Services Pakistan (NESPAK), Lahore, Pakistan; University of Central Punjab, Lahore, Pakistan; National College of Arts, Lahore, Pakistan Fawad S. Niazi: Department of Civil and Mechanical Engineering, Purdue University, Fort Wayne, IN, USA Tauqir Ahmed: Department of Civil Engineering, National University of Computer and Emerging Sciences, Lahore, Pakistan Mubashir Aziz: Department of Civil and Environmental Engineering, King Fahd University of Petroleum and Minerals, Dhahran, KSA; Interdisciplinary Research Center for Construction and Building Materials, King Fahd University of Petroleum and Minerals, Dhahran, KSA | ||