Abstract
In varieties of coastal soil, deep foundations, particularly pile foundations, are used because the soil in these areas may be subjected to numerous factors that change the engineering properties of the soil, such as oil pollution. The pile foundations might be vulnerable to torsional stresses from eccentric, horizontal loads brought on by winds, earthquakes, shipwrecks, and waves, in addition to the loads carried by supported superstructures. In this laboratory investigation, tests have been carried out to investigate the behavior of piles under torsional load (T) and combined torsional-vertical load (T → V) in contaminated sandy soils. Additionally, investigations examined how the Lp/Dp ratio, relative density (Dr), and depth of the contaminated layer (Lc) affect their maximum torsional bearing capacity, which was discussed in detail. According to the findings, oil contamination significantly decreased pile response, and it also demonstrated that independent load differs significantly from combined load, in which the ultimate vertical bearing capacity of the piles in Dr = 30% installed in contaminated sand under pre-applied torque T → V loading at Lc/Lp = 1 decreases by 3.3, 3.9, and 5.1% for Lp/Dp 20, 16.67, and 13.3, respectively. These results show that the pile design must take into account the amalgamated loading of contaminated sand.
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Ramadan, N.O., Nasr, A.M. & Azzam, W.R. Model study of the geotechnical behavior of a single pile under torsional load in contaminated sand. Arab J Geosci 16, 674 (2023). https://doi.org/10.1007/s12517-023-11793-4
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DOI: https://doi.org/10.1007/s12517-023-11793-4