Investigating the Behavior of Single Pile and Adjacent Pile Group of Sandy Slope under Uplift Loading

Authors

1 Department of Civil Engineering, Ahwaz Branch, Islamic Azad University, Ahwaz, Iran

2 Department of Civil Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran.

10.22034/ceej.2024.61105.2343

Abstract

The pile group is used as the foundation of structures such as transmission towers and bridge foundations. These structures are often located next to or on the slope and are subjected to tensile loads. No research has been done on the tensile load capacity of single piles and pile group adjacent to the slope, so investigating the behavior of the pile group adjacent to the slope under tensile loading is of particular importance. The purpose of this research is to investigate theuplift bearing capacity and uplift efficiency coefficient of the vertical pile group under uplift loading located at the crest of dry sandy slope by using of physical model tests.

for this purpose , series of physical model tests with uplift loading on single pile and pile group of 2x2, 1x2, 1x3 and 3x3 located in crest of slope and the effect of various factors such as the effect of relative density of soil, the embedded length of the piles, the direction of the linear pile group to the slope crest on the uplift bearing capacity and efficiency coefficient of the pile group were investigated. The results show that the efficiency coefficient of pile group in different relative density of the soil and embedded lengths decreases with the increase in the number of piles. By increasing embedded length of pile and relative density of the soil, the effect of the direction of linear group relative to the slope crest on the uplift bearing capacity and efficiency coefficient decreases.

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Journal of Civil and Environmental Engineering

Articles in Press, Accepted Manuscript
Available Online from 06 July 2024

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